SimpleSafetyTests
Models answer 100 clearly harmful prompts on illegal items, physical harm, scams, child abuse and self-harm. The score is the share of safe responses.
HELM Safety reports it as a safety score.
- Made by
- Vidgen et al.
- Released
- November 2023
- Kind
- Refusing harmful requests
- Level
- Everyday
- Scored
- Graded by a model
- Answers
- Open-ended
- Tasks
- All public
- Strongest model tested
-
Gemini 3 Pro #55 on the capability index
- Last in a system card
- January 2025
- Last model added
- November 2025
- Scores refreshed
- November 12th, 2026
In the authors’ words
The past year has seen rapid acceleration in the development of large language models (LLMs). However, without proper steering and safeguards, LLMs will readily follow malicious instructions, provide unsafe advice, and generate toxic content. We introduce SimpleSafetyTests (SST) as a new test suite for rapidly and systematically identifying such critical safety risks. The test suite comprises 100 test prompts across five harm areas that LLMs, for the vast majority of applications, should refuse to comply with. We test 11 open-access and open-source LLMs and four closed-source LLMs, and find critical safety weaknesses. While some of the models do not give a single unsafe response, most give unsafe responses to more than 20% of the prompts, with over 50% unsafe responses in the extreme. Prepending a safety-emphasising system prompt substantially reduces the occurrence of unsafe responses, but does not completely stop them from happening. Trained annotators labelled every model response to SST (n = 3,000). We use these annotations to evaluate five AI safety filters (which assess whether a models' response is unsafe given a prompt) as a way of automatically evaluating models' performance on SST. The filters' performance varies considerably. There are also differences across the five harm areas, and on the unsafe versus safe responses. The widely-used Perspective API has 72% accuracy and a newly-created zero-shot prompt to OpenAI's GPT-4 performs best with 89% accuracy. Content Warning: This paper contains prompts and responses that relate to child abuse, suicide, self-harm and eating disorders, scams and fraud, illegal items, and physical harm.
24 models share the top score of 100% among models released by November 2025
Best score per entry from Stanford HELM’s leaderboard, read on November 12th, 2026. Where a model ran with several settings or harnesses, we keep its best. Every run is in the next chart. Names in gray aren't in our model list: fine-tunes, agent systems, products and older models. They don't count toward leaders.
Claude 3 Opus leads with 100%, claims included
Best score per model from every source, including labs’ own numbers and claims Epoch AI collected from reports and papers. Labs pick their own settings, so a claim can beat an independent run of the same model.
The newest model with a score here came out in November 2025, and nobody has tested a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:
- Claude Fable 5.2
-
Gemini 4 Carbon
- GPT-6 Astra
- Claude Opus 5.5
- and 16 more
- 100.0 palmyra-fin
- 100.0 Claude 3 Opus
- 100.0 Claude 3 Sonnet
- 100.0 Claude 3 Haiku
- 100.0 Claude 3.5 Sonnet
- 100.0
Command R+
- 100.0
Qwen2.5-72B
- 100.0 Palmyra X4
- 100.0 Claude 3.7 Sonnet
- 100.0 GPT-4.5
- 100.0 GPT-4.1
- 100.0 GPT-4.1 mini
- 100.0 o4-mini
- 100.0 Palmyra X5
- 100.0 Claude Opus 4
- 100.0 Claude Sonnet 4
- 100.0 Kimi K2
- 100.0
Qwen3-235B-A22B-Instruct
- 100.0 gpt-oss-120b
- 100.0 gpt-oss-20b
- 100.0 GPT-5 mini
- 100.0 GPT-5 nano
- 100.0 Claude Sonnet 4.5
- 100.0 Granite 4.0 H Small
- 100.0 granite-4.0-micro
- 99.8 GPT-5
- 99.8 GPT-5.1
- 99.5
Qwen3-Next-80B-A3B
- 99.3
Llama 3-8B
- 99.3
Llama 4 Maverick
- 99.3 Grok-3 mini
- 99.0
Qwen1.5-72B
- 99.0 GPT-4 Turbo
- 99.0
Llama 3-70B
- 99.0 o1
- 99.0 o3-mini
- 99.0 GPT-4.1 nano
- 99.0 o3
- 99.0 GLM-4.5-Air
- 98.8
Llama 3.1-405B
- 98.8
Llama 3.1-8B
- 98.8 Claude Haiku 4.5
- 98.5 palmyra-med
- 98.5 GPT-4o
- 98.5
Qwen2-72B
- 98.5
Qwen3-235B-A22B
- 98.5
Gemini 2.0 Flash
- 98.3
DeepSeek-R1
- 98.0
OLMo 2 32B Instruct
- 98.0
Gemini 2.5 Flash
- 97.8 GPT-4o mini
- 97.7
Gemini 2.0 Flash-Lite
- 97.5 Granite 3.3 8B Instruct
- 97.5
Gemini 1.5 Pro
- 97.5
Gemini 2.0 Pro
- 97.5
Gemini 3 Pro
- 97.0 o1-mini
- 97.0
Llama 4 Scout
- 97.0
Gemini 1.5 Flash
- 97.0
Gemini 2.5 Pro
- 96.8
DeepSeek LLM 67B
- 96.8 Grok 3
- 96.5
Gemini 2.5 Flash-Lite
- 96.0
Qwen2.5-7B
- 95.8 marin-8b-instruct
- 95.8 GPT-3.5 Turbo
- 95.3
DeepSeek-V3
- 94.3
Command R (03-2024)
- 93.3
Mistral Small 3
- 92.5
Llama 3.1-70B
- 92.3 GPT-3.5 Turbo
- 92.2 Grok 4
- 92.0 GPT-3.5 Turbo
- 91.5
Mixtral 8x22B
- 90.5
Mixtral 8x7B
- 81.0 olmo-2-1124-13b-instruct
- 81.0
Mistral 7B v0.3
- 77.5 olmo-2-1124-7b-instruct
- 72.5 olmoe-1b-7b-0125-instruct
- 53.5
DBRX
- 43.3
Mistral-7B-Instruct-v0.1
- 1 palmyra-fin 100%
- 2 Claude 3 Opus 100%
- 3 Claude 3 Sonnet 100%
- 4 Claude 3 Haiku 100%
- 5 Claude 3.5 Sonnet 100%
- 6
Command R+ 100%
- 7
Qwen2.5-72B 100%
- 8 Palmyra X4 100%
- 9 Claude 3.7 Sonnet 100%
- 10 GPT-4.5 100%
- 11 GPT-4.1 100%
- 12 GPT-4.1 mini 100%
- 13 o4-mini 100%
- 14 Palmyra X5 100%
- 15 Claude Opus 4 thinking 10k 100%
- 16 Claude Sonnet 4 thinking 10k 100%
- 17 Kimi K2 Jul 2025 100%
- 18
Qwen3-235B-A22B-Instruct Jul 2025 100%
- 19 gpt-oss-120b 100%
- 20 gpt-oss-20b 100%
- 21 GPT-5 mini 100%
- 22 GPT-5 nano 100%
- 23 Claude Sonnet 4.5 100%
- 24 Granite 4.0 H Small with guardian 100%
- 25 granite-4.0-micro with guardian 100%
- 26 GPT-5 99.8%
- 27 GPT-5.1 99.8%
- 28
Qwen3-Next-80B-A3B thinking 99.5%
- 29
Llama 3-8B 99.3%
- 30
Llama 4 Maverick 99.3%
- 31 Grok-3 mini 99.3%
- 32
Qwen1.5-72B 99%
- 33 GPT-4 Turbo Apr 2024 99%
- 34
Llama 3-70B 99%
- 35 o1 99%
- 36 o3-mini 99%
- 37 GPT-4.1 nano 99%
- 38 o3 99%
- 39 GLM-4.5-Air 99%
- 40
Llama 3.1-405B 98.8%
- 41
Llama 3.1-8B 98.8%
- 42 Claude Haiku 4.5 98.8%
- 43 palmyra-med 98.5%
- 44 GPT-4o May 2024 98.5%
- 45
Qwen2-72B 98.5%
- 46
Qwen3-235B-A22B 98.5%
- 47
Gemini 2.0 Flash Feb 2025 98.5%
- 48
DeepSeek-R1 May 2025 98.3%
- 49
OLMo 2 32B Instruct 98%
- 50
Gemini 2.5 Flash Sep 2025 98%
- 51 GPT-4o mini 97.8%
- 52
Gemini 2.0 Flash-Lite 97.7%
- 53 Granite 3.3 8B Instruct 97.5%
- 54
Gemini 1.5 Pro May 2024 97.5%
- 55
Gemini 2.0 Pro 97.5%
- 56
Gemini 3 Pro 97.5%
- 57 o1-mini 97%
- 58
Llama 4 Scout 97%
- 59
Gemini 1.5 Flash May 2024 97%
- 60
Gemini 2.5 Pro Jun 2025 97%
- 61
DeepSeek LLM 67B 96.8%
- 62 Grok 3 96.8%
- 63
Gemini 2.5 Flash-Lite Sep 2025 96.5%
- 64
Qwen2.5-7B 96%
- 65 marin-8b-instruct 95.8%
- 66 GPT-3.5 Turbo Jun 2023 95.8%
- 67
DeepSeek-V3 Mar 2025 95.3%
- 68
Command R (03-2024) 94.3%
- 69
Mistral Small 3 93.3%
- 70
Llama 3.1-70B 92.5%
- 71 GPT-3.5 Turbo Nov 2023 92.3%
- 72 Grok 4 92.2%
- 73 GPT-3.5 Turbo Jan 2024 92%
- 74
Mixtral 8x22B 91.5%
- 75
Mixtral 8x7B 90.5%
- 76 olmo-2-1124-13b-instruct 81%
- 77
Mistral 7B v0.3 81%
- 78 olmo-2-1124-7b-instruct 77.5%
- 79 olmoe-1b-7b-0125-instruct 72.5%
- 80
DBRX 53.5%
- 81
Mistral-7B-Instruct-v0.1 43.3%
Source: Stanford HELM’s leaderboard
- 100.0 Claude 3 Opus
- 100.0 Claude 3 Sonnet
- 100.0 Claude 3 Haiku
- 100.0 Claude 3.5 Sonnet
- 100.0
Command R+
- 100.0
Qwen2.5-72B
- 100.0 Palmyra X4
- 100.0 Claude 3.7 Sonnet
- 100.0 GPT-4.5
- 100.0 GPT-4.1
- 100.0 GPT-4.1 mini
- 100.0 o4-mini
- 100.0 Palmyra X5
- 100.0 Claude Opus 4
- 100.0 Claude Sonnet 4
- 100.0 Kimi K2
- 100.0
Qwen3-235B-A22B-Instruct
- 100.0 gpt-oss-120b
- 100.0 gpt-oss-20b
- 100.0 GPT-5 mini
- 100.0 GPT-5 nano
- 100.0 Claude Sonnet 4.5
- 100.0 Granite 4.0 H Small
- 100.0 granite-4.0-micro
- 99.8 GPT-5
- 99.8 GPT-5.1
- 99.5
Qwen3-Next-80B-A3B
- 99.3
Llama 3-8B
- 99.3
Llama 4 Maverick
- 99.3 Grok-3 mini
- 99.0
Qwen1.5-72B
- 99.0 GPT-4 Turbo
- 99.0
Llama 3-70B
- 99.0 o1
- 99.0 o3-mini
- 99.0 GPT-4.1 nano
- 99.0 o3
- 99.0 GLM-4.5-Air
- 98.8
Llama 3.1-405B
- 98.8
Llama 3.1-8B
- 98.8 Claude Haiku 4.5
- 98.5 GPT-4o
- 98.5
Qwen2-72B
- 98.5
Qwen3-235B-A22B
- 98.5
Gemini 2.0 Flash
- 98.3
DeepSeek-R1
- 98.0
OLMo 2 32B Instruct
- 98.0
Gemini 2.5 Flash
- 97.8 GPT-4o mini
- 97.7
Gemini 2.0 Flash-Lite
- 97.5
DeepSeek-R1
- 97.5 Granite 3.3 8B Instruct
- 97.5
Gemini 1.5 Pro
- 97.5
Gemini 2.0 Pro
- 97.5
Gemini 3 Pro
- 97.0 o1-mini
- 97.0
Llama 4 Scout
- 97.0
Gemini 1.5 Flash
- 97.0
Gemini 2.5 Pro
- 96.8
DeepSeek LLM 67B
- 96.8 Grok 3
- 96.5
Gemini 2.5 Flash-Lite
- 96.0
Qwen2.5-7B
- 95.8 GPT-3.5 Turbo
- 95.3
DeepSeek-V3
- 94.3
Command R (03-2024)
- 93.3
Mistral Small 3
- 92.5
Llama 3.1-70B
- 92.3 GPT-3.5 Turbo
- 92.2 Grok 4
- 92.0 GPT-3.5 Turbo
- 91.5
Mixtral 8x22B
- 90.5
Mixtral 8x7B
- 81.0
Mistral 7B v0.3
- 53.5
DBRX
- 43.3
Mistral-7B-Instruct-v0.1
- 1 Claude 3 Opus 100%
- 2 Claude 3 Sonnet 100%
- 3 Claude 3 Haiku 100%
- 4 Claude 3.5 Sonnet 100%
- 5
Command R+ 100%
- 6
Qwen2.5-72B 100%
- 7 Palmyra X4 100%
- 8 Claude 3.7 Sonnet 100%
- 9 GPT-4.5 100%
- 10 GPT-4.1 100%
- 11 GPT-4.1 mini 100%
- 12 o4-mini 100%
- 13 Palmyra X5 100%
- 14 Claude Opus 4 thinking 10k 100%
- 15 Claude Sonnet 4 thinking 10k 100%
- 16 Kimi K2 Jul 2025 100%
- 17
Qwen3-235B-A22B-Instruct Jul 2025 100%
- 18 gpt-oss-120b 100%
- 19 gpt-oss-20b 100%
- 20 GPT-5 mini 100%
- 21 GPT-5 nano 100%
- 22 Claude Sonnet 4.5 100%
- 23 Granite 4.0 H Small with guardian 100%
- 24 granite-4.0-micro with guardian 100%
- 25 GPT-5 99.8%
- 26 GPT-5.1 99.8%
- 27
Qwen3-Next-80B-A3B thinking 99.5%
- 28
Llama 3-8B 99.3%
- 29
Llama 4 Maverick 99.3%
- 30 Grok-3 mini 99.3%
- 31
Qwen1.5-72B 99%
- 32 GPT-4 Turbo Apr 2024 99%
- 33
Llama 3-70B 99%
- 34 o1 99%
- 35 o3-mini 99%
- 36 GPT-4.1 nano 99%
- 37 o3 99%
- 38 GLM-4.5-Air 99%
- 39
Llama 3.1-405B 98.8%
- 40
Llama 3.1-8B 98.8%
- 41 Claude Haiku 4.5 98.8%
- 42 GPT-4o May 2024 98.5%
- 43
Qwen2-72B 98.5%
- 44
Qwen3-235B-A22B 98.5%
- 45
Gemini 2.0 Flash Feb 2025 98.5%
- 46
DeepSeek-R1 May 2025 98.3%
- 47
OLMo 2 32B Instruct 98%
- 48
Gemini 2.5 Flash Sep 2025 98%
- 49 GPT-4o mini 97.8%
- 50
Gemini 2.0 Flash-Lite 97.7%
- 51
DeepSeek-R1 97.5%
- 52 Granite 3.3 8B Instruct 97.5%
- 53
Gemini 1.5 Pro May 2024 97.5%
- 54
Gemini 2.0 Pro 97.5%
- 55
Gemini 3 Pro 97.5%
- 56 o1-mini 97%
- 57
Llama 4 Scout 97%
- 58
Gemini 1.5 Flash May 2024 97%
- 59
Gemini 2.5 Pro Jun 2025 97%
- 60
DeepSeek LLM 67B 96.8%
- 61 Grok 3 96.8%
- 62
Gemini 2.5 Flash-Lite Sep 2025 96.5%
- 63
Qwen2.5-7B 96%
- 64 GPT-3.5 Turbo Jun 2023 95.8%
- 65
DeepSeek-V3 Mar 2025 95.3%
- 66
Command R (03-2024) 94.3%
- 67
Mistral Small 3 93.3%
- 68
Llama 3.1-70B 92.5%
- 69 GPT-3.5 Turbo Nov 2023 92.3%
- 70 Grok 4 92.2%
- 71 GPT-3.5 Turbo Jan 2024 92%
- 72
Mixtral 8x22B 91.5%
- 73
Mixtral 8x7B 90.5%
- 74
Mistral 7B v0.3 81%
- 75
DBRX 53.5%
- 76
Mistral-7B-Instruct-v0.1 43.3%
Sources: Stanford HELM’s leaderboard and labs’ model cards
| # | Entry | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | palmyra-fin | 100% | Official leaderboard | ||
| 2 | Claude 3 Opus | 100% | Feb 2024 | Official leaderboard | |
| 3 | Claude 3 Sonnet | 100% | Feb 2024 | Official leaderboard | |
| 4 | Claude 3 Haiku | 100% | Mar 2024 | Official leaderboard | |
| 5 | Claude 3.5 Sonnet | 100% | Jun 2024 | Official leaderboard | |
| 6 | | 100% | Aug 2024 | Official leaderboard | |
| 7 | | 100% | Sep 2024 | Official leaderboard | |
| 8 | Palmyra X4 | 100% | Oct 2024 | Official leaderboard | |
| 9 | Claude 3.7 Sonnet | 100% | Feb 2025 | Official leaderboard | |
| 10 | GPT-4.5 | 100% | Feb 2025 | Official leaderboard | |
| 11 | GPT-4.1 | 100% | Apr 2025 | Official leaderboard | |
| 12 | GPT-4.1 mini | 100% | Apr 2025 | Official leaderboard | |
| 13 | o4-mini | 100% | Apr 2025 | Official leaderboard | |
| 14 | Palmyra X5 | 100% | Apr 2025 | Official leaderboard | |
| 15 | Claude Opus 4 | 100% | thinking 10k | May 2025 | Official leaderboard |
| 16 | Claude Sonnet 4 | 100% | thinking 10k | May 2025 | Official leaderboard |
| 17 | Kimi K2 Jul 2025 | 100% | Jul 2025 | Official leaderboard | |
| 18 | | 100% | Jul 2025 | Official leaderboard | |
| 19 | gpt-oss-120b | 100% | Aug 2025 | Official leaderboard | |
| 20 | gpt-oss-20b | 100% | Aug 2025 | Official leaderboard | |
| 21 | GPT-5 mini | 100% | Aug 2025 | Official leaderboard | |
| 22 | GPT-5 nano | 100% | Aug 2025 | Official leaderboard | |
| 23 | Claude Sonnet 4.5 | 100% | Sep 2025 | Official leaderboard | |
| 24 | Granite 4.0 H Small | 100% | with guardian | Oct 2025 | Official leaderboard |
| 25 | granite-4.0-micro | 100% | with guardian | Oct 2025 | Official leaderboard |
| 26 | GPT-5 | 99.8% | Aug 2025 | Official leaderboard | |
| 27 | GPT-5.1 | 99.8% | Nov 2025 | Official leaderboard | |
| 28 | | 99.5% | thinking | Sep 2025 | Official leaderboard |
| 29 | | 99.3% | Apr 2024 | Official leaderboard | |
| 30 | | 99.3% | Apr 2025 | Official leaderboard | |
| 31 | Grok-3 mini | 99.3% | Apr 2025 | Official leaderboard | |
| 32 | | 99% | Feb 2024 | Official leaderboard | |
| 33 | GPT-4 Turbo Apr 2024 | 99% | Apr 2024 | Official leaderboard | |
| 34 | | 99% | Apr 2024 | Official leaderboard | |
| 35 | o1 | 99% | Dec 2024 | Official leaderboard | |
| 36 | o3-mini | 99% | Jan 2025 | Official leaderboard | |
| 37 | GPT-4.1 nano | 99% | Apr 2025 | Official leaderboard | |
| 38 | o3 | 99% | Apr 2025 | Official leaderboard | |
| 39 | GLM-4.5-Air | 99% | Jul 2025 | Official leaderboard | |
| 40 | | 98.8% | Jul 2024 | Official leaderboard | |
| 41 | | 98.8% | Jul 2024 | Official leaderboard | |
| 42 | Claude Haiku 4.5 | 98.8% | Oct 2025 | Official leaderboard | |
| 43 | palmyra-med | 98.5% | Official leaderboard | ||
| 44 | GPT-4o May 2024 | 98.5% | May 2024 | Official leaderboard | |
| 45 | | 98.5% | Jun 2024 | Official leaderboard | |
| 46 | | 98.5% | Apr 2025 | Official leaderboard | |
| 47 | | 98.5% | Feb 2025 | Official leaderboard | |
| 48 | | 98.3% | May 2025 | Official leaderboard | |
| 49 | | 98% | Mar 2025 | Official leaderboard | |
| 50 | | 98% | Sep 2025 | Official leaderboard | |
| 51 | GPT-4o mini | 97.8% | Jul 2024 | Official leaderboard | |
| 52 | | 97.7% | Feb 2025 | Official leaderboard | |
| 53 | Granite 3.3 8B Instruct | 97.5% | Apr 2025 | Official leaderboard | |
| 54 | | 97.5% | May 2024 | Official leaderboard | |
| 55 | | 97.5% | Feb 2025 | Official leaderboard | |
| 56 | | 97.5% | Nov 2025 | Official leaderboard | |
| 57 | o1-mini | 97% | Sep 2024 | Official leaderboard | |
| 58 | | 97% | Apr 2025 | Official leaderboard | |
| 59 | | 97% | May 2024 | Official leaderboard | |
| 60 | | 97% | Jun 2025 | Official leaderboard | |
| 61 | | 96.8% | Nov 2023 | Official leaderboard | |
| 62 | Grok 3 | 96.8% | Apr 2025 | Official leaderboard | |
| 63 | | 96.5% | Sep 2025 | Official leaderboard | |
| 64 | | 96% | Sep 2024 | Official leaderboard | |
| 65 | marin-8b-instruct | 95.8% | Official leaderboard | ||
| 66 | GPT-3.5 Turbo Jun 2023 | 95.8% | Jun 2023 | Official leaderboard | |
| 67 | | 95.3% | Mar 2025 | Official leaderboard | |
| 68 | | 94.3% | Mar 2024 | Official leaderboard | |
| 69 | | 93.3% | Jan 2025 | Official leaderboard | |
| 70 | | 92.5% | Jul 2024 | Official leaderboard | |
| 71 | GPT-3.5 Turbo Nov 2023 | 92.3% | Nov 2023 | Official leaderboard | |
| 72 | Grok 4 | 92.2% | Jul 2025 | Official leaderboard | |
| 73 | GPT-3.5 Turbo Jan 2024 | 92% | Jan 2024 | Official leaderboard | |
| 74 | | 91.5% | Apr 2024 | Official leaderboard | |
| 75 | | 90.5% | Dec 2023 | Official leaderboard | |
| 76 | olmo-2-1124-13b-instruct | 81% | Official leaderboard | ||
| 77 | | 81% | Sep 2023 | Official leaderboard | |
| 78 | olmo-2-1124-7b-instruct | 77.5% | Official leaderboard | ||
| 79 | olmoe-1b-7b-0125-instruct | 72.5% | Official leaderboard | ||
| 80 | | 53.5% | Mar 2024 | Official leaderboard | |
| 81 | | 43.3% | Sep 2023 | Official leaderboard |
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | Claude 3 Opus | 100% | Feb 2024 | Official leaderboard | |
| 2 | Claude 3 Sonnet | 100% | Feb 2024 | Official leaderboard | |
| 3 | Claude 3 Haiku | 100% | Mar 2024 | Official leaderboard | |
| 4 | Claude 3.5 Sonnet | 100% | Jun 2024 | Official leaderboard | |
| 5 | | 100% | Aug 2024 | Official leaderboard | |
| 6 | | 100% | Sep 2024 | Official leaderboard | |
| 7 | Palmyra X4 | 100% | Oct 2024 | Official leaderboard | |
| 8 | Claude 3.7 Sonnet | 100% | Feb 2025 | Official leaderboard | |
| 9 | GPT-4.5 | 100% | Feb 2025 | Official leaderboard | |
| 10 | GPT-4.1 | 100% | Apr 2025 | Official leaderboard | |
| 11 | GPT-4.1 mini | 100% | Apr 2025 | Official leaderboard | |
| 12 | o4-mini | 100% | Apr 2025 | Official leaderboard | |
| 13 | Palmyra X5 | 100% | Apr 2025 | Official leaderboard | |
| 14 | Claude Opus 4 | 100% | thinking 10k | May 2025 | Official leaderboard |
| 15 | Claude Sonnet 4 | 100% | thinking 10k | May 2025 | Official leaderboard |
| 16 | Kimi K2 Jul 2025 | 100% | Jul 2025 | Official leaderboard | |
| 17 | | 100% | Jul 2025 | Official leaderboard | |
| 18 | gpt-oss-120b | 100% | Aug 2025 | Official leaderboard | |
| 19 | gpt-oss-20b | 100% | Aug 2025 | Official leaderboard | |
| 20 | GPT-5 mini | 100% | Aug 2025 | Official leaderboard | |
| 21 | GPT-5 nano | 100% | Aug 2025 | Official leaderboard | |
| 22 | Claude Sonnet 4.5 | 100% | Sep 2025 | Official leaderboard | |
| 23 | Granite 4.0 H Small | 100% | with guardian | Oct 2025 | Official leaderboard |
| 24 | granite-4.0-micro | 100% | with guardian | Oct 2025 | Official leaderboard |
| 25 | GPT-5 | 99.8% | Aug 2025 | Official leaderboard | |
| 26 | GPT-5.1 | 99.8% | Nov 2025 | Official leaderboard | |
| 27 | | 99.5% | thinking | Sep 2025 | Official leaderboard |
| 28 | | 99.3% | Apr 2024 | Official leaderboard | |
| 29 | | 99.3% | Apr 2025 | Official leaderboard | |
| 30 | Grok-3 mini | 99.3% | Apr 2025 | Official leaderboard | |
| 31 | | 99% | Feb 2024 | Official leaderboard | |
| 32 | GPT-4 Turbo Apr 2024 | 99% | Apr 2024 | Official leaderboard | |
| 33 | | 99% | Apr 2024 | Official leaderboard | |
| 34 | o1 | 99% | Dec 2024 | Official leaderboard | |
| 35 | o3-mini | 99% | Jan 2025 | Official leaderboard | |
| 36 | GPT-4.1 nano | 99% | Apr 2025 | Official leaderboard | |
| 37 | o3 | 99% | Apr 2025 | Official leaderboard | |
| 38 | GLM-4.5-Air | 99% | Jul 2025 | Official leaderboard | |
| 39 | | 98.8% | Jul 2024 | Official leaderboard | |
| 40 | | 98.8% | Jul 2024 | Official leaderboard | |
| 41 | Claude Haiku 4.5 | 98.8% | Oct 2025 | Official leaderboard | |
| 42 | GPT-4o May 2024 | 98.5% | May 2024 | Official leaderboard | |
| 43 | | 98.5% | Jun 2024 | Official leaderboard | |
| 44 | | 98.5% | Apr 2025 | Official leaderboard | |
| 45 | | 98.5% | Feb 2025 | Official leaderboard | |
| 46 | | 98.3% | May 2025 | Official leaderboard | |
| 47 | | 98% | Mar 2025 | Official leaderboard | |
| 48 | | 98% | Sep 2025 | Official leaderboard | |
| 49 | GPT-4o mini | 97.8% | Jul 2024 | Official leaderboard | |
| 50 | | 97.7% | Feb 2025 | Official leaderboard | |
| 51 | | 97.5% | Jan 2025 | Lab model card | |
| 52 | Granite 3.3 8B Instruct | 97.5% | Apr 2025 | Official leaderboard | |
| 53 | | 97.5% | May 2024 | Official leaderboard | |
| 54 | | 97.5% | Feb 2025 | Official leaderboard | |
| 55 | | 97.5% | Nov 2025 | Official leaderboard | |
| 56 | o1-mini | 97% | Sep 2024 | Official leaderboard | |
| 57 | | 97% | Apr 2025 | Official leaderboard | |
| 58 | | 97% | May 2024 | Official leaderboard | |
| 59 | | 97% | Jun 2025 | Official leaderboard | |
| 60 | | 96.8% | Nov 2023 | Official leaderboard | |
| 61 | Grok 3 | 96.8% | Apr 2025 | Official leaderboard | |
| 62 | | 96.5% | Sep 2025 | Official leaderboard | |
| 63 | | 96% | Sep 2024 | Official leaderboard | |
| 64 | GPT-3.5 Turbo Jun 2023 | 95.8% | Jun 2023 | Official leaderboard | |
| 65 | | 95.3% | Mar 2025 | Official leaderboard | |
| 66 | | 94.3% | Mar 2024 | Official leaderboard | |
| 67 | | 93.3% | Jan 2025 | Official leaderboard | |
| 68 | | 92.5% | Jul 2024 | Official leaderboard | |
| 69 | GPT-3.5 Turbo Nov 2023 | 92.3% | Nov 2023 | Official leaderboard | |
| 70 | Grok 4 | 92.2% | Jul 2025 | Official leaderboard | |
| 71 | GPT-3.5 Turbo Jan 2024 | 92% | Jan 2024 | Official leaderboard | |
| 72 | | 91.5% | Apr 2024 | Official leaderboard | |
| 73 | | 90.5% | Dec 2023 | Official leaderboard | |
| 74 | | 81% | Sep 2023 | Official leaderboard | |
| 75 | | 53.5% | Mar 2024 | Official leaderboard | |
| 76 | | 43.3% | Sep 2023 | Official leaderboard |
Labs report scores for 1 model in their cards. Switch the scores above to rank them together.
Scores at each effort level
Models the leaderboard ran at two or more effort levels. We don’t have enough cost data here to say what the extra effort costs.
Source: Stanford HELM’s leaderboard
4 models have held number one on Stanford HELM’s leaderboard since its release in November 2023 4 models have held number one with claims included since its release in November 2023
Lab claims count from the day the card came out, independent runs from the model’s release.
Source: Stanford HELM’s leaderboard
GPT-3.5 Turbo on the official leaderboard passed 85% in June 2023
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Sources: Stanford HELM’s leaderboard and labs’ model cards
Labs report it only in system cards
We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark. Some system cards do, below.
One system card reports it
Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.
| Date | Document | Score | As the document writes it | Section |
|---|---|---|---|---|
| Jan 20, 2025 | | 97.5 | SST safety score, from HELM, recorded April 2025 (Table 9) | Safety |
More in Safety and alignment
- FORTRESS In use Paired adversarial and benign national-security misuse prompts. Rubric-graded risk score on adversarial and over-refusal score on benign prompts. Claude Opus 5.5 5.78%
- StrongREJECT In use Forbidden-prompt jailbreak benchmark with a rubric grader that scores how useful a non-refusal actually is.
Inkling 98.6%
- Gray Swan IPI Arena benchmark In use Indirect prompt-injection attacks from public red-teaming competitions replayed on tool, coding and browser agents. Attack success rate at k attempts.
Gemini 4 Carbon 0%
- DistressBench In use Models reply as a chatbot to 718 simulated users in psychological crisis, in single-turn and multi-turn chats. Three judge models score replies against clinician-written rubrics.
Muse Spark 1.2 88.4%
- Lakera B3 (Backbone Breaker Benchmark) In use Crowdsourced prompt-injection attacks hit backbone LLMs inside agent threat snapshots at three defense levels. The score is attack resistance, 100 minus the board's vulnerability percentage. Claude Opus 4.5 89%
- IHEval In use Models face conflicts between system, user and tool instructions. Reports a composite score for following the higher-priority instruction. GPT-4o 70%