Benchmark Almanac

GSM8K-Platinum

Claude 3.7 Sonnet 99.8% leads since February 2025
Claude 3.7 Sonnet 99.8% leads since February 2025
Only in system cards

Models solve the GSM8K test problems after MIT researchers fixed wrong labels and removed badly written questions. Errors on it are more likely real model mistakes.

A drop-in replacement for the GSM8K test set from the Platinum Benchmarks project, which also cleans other saturated benchmarks.

Released
February 2025
Kind
Word problems
Level
School
Scored
Checked automatically
Answers
Short answer
Tasks
All public
Strongest model tested
o1 #117 on the capability index
Last in a system card
September 2025
Last model added
September 2025
Scores refreshed
November 12th, 2026

In the authors’ words

When deploying large language models (LLMs), it is important to ensure that these models are not only capable, but also reliable. Many benchmarks have been created to track LLMs' growing capabilities, however there has been no similar focus on measuring their reliability. To understand the potential ramifications of this gap, we investigate how well current benchmarks quantify model reliability. We find that pervasive label errors can compromise these evaluations, obscuring lingering model failures and hiding unreliable behavior. Motivated by this gap in the evaluation of reliability, we then propose the concept of so-called platinum benchmarks, i.e., benchmarks carefully curated to minimize label errors and ambiguity. As a first attempt at constructing such benchmarks, we revise examples from fifteen existing popular benchmarks. We evaluate a wide range of models on these platinum benchmarks and find that, indeed, frontier LLMs still exhibit failures on simple tasks such as elementary-level math word problems. Analyzing these failures further reveals previously unidentified patterns of problems on which frontier models consistently struggle. We provide code at https://github.com/MadryLab/platinum-benchmarks

Abstract of Do Large Language Model Benchmarks Test Reliability? (arXiv:2502.03461, CC0)
11
Entries on its own leaderboard, 8 models we track
1
System card reports it, from 1 lab

Claude 3.7 Sonnet leads with 99.8% among models released by February 2025

Best score per entry from the benchmark's own leaderboard, read on November 12th, 2026. Where a model ran with several settings or harnesses, we keep its best. Names in gray aren't in our model list: fine-tunes, agent systems, products and older models. They don't count toward leaders.

Claude 3.7 Sonnet leads with 99.8%, 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 February 2025, and nobody has tested a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:

  1. 1 Claude 3.7 Sonnet thinking 99.8%
  2. 2 deepseek-r1 (snapshot unspecified) 99.7%
  3. 3 o1 high 99.7%
  4. 4 o3-mini high 99.4%
  5. 5 GPT-4.5 99.3%
  6. 6 Gemini 2.0 Flash Thinking Jan 2025 99.2%
  7. 7 Claude 3.5 Sonnet (October 2024) 99.1%
  8. 8 meta-llama/Meta-Llama-3.1-405B-Instruct 98.8%
  9. 9 GPT-4o Nov 2024 98.6%
  10. 10 Gemini 2.0 Pro 98.5%
  11. 11 gpt-4o-mini (snapshot unspecified) 97.3%

Source: Official GSM8K-Platinum leaderboard

#EntryScoreSettingDateSource
1 Claude 3.7 Sonnet 99.8% thinking Feb 2025 Official leaderboard
2 deepseek-r1 (snapshot unspecified) 99.7% Official leaderboard
3 o1 99.7% high Dec 2024 Official leaderboard
4 o3-mini 99.4% high Jan 2025 Official leaderboard
5 GPT-4.5 99.3% Feb 2025 Official leaderboard
6 Gemini 2.0 Flash Thinking Jan 2025 99.2% Jan 2025 Official leaderboard
7 Claude 3.5 Sonnet (October 2024) 99.1% Oct 2024 Official leaderboard
8 meta-llama/Meta-Llama-3.1-405B-Instruct 98.8% Official leaderboard
9 GPT-4o Nov 2024 98.6% Nov 2024 Official leaderboard
10 Gemini 2.0 Pro 98.5% Feb 2025 Official leaderboard
11 gpt-4o-mini (snapshot unspecified) 97.3% Official leaderboard
#ModelScoreSettingDateSource
1 Claude 3.7 Sonnet 99.8% thinking Feb 2025 Official leaderboard
2 o1 99.7% high Dec 2024 Official leaderboard
3 o3-mini 99.4% high Jan 2025 Official leaderboard
4 GPT-4.5 99.3% Feb 2025 Official leaderboard
5 Gemini 2.0 Flash Thinking Jan 2025 99.2% Jan 2025 Official leaderboard
6 Claude 3.5 Sonnet (October 2024) 99.1% Oct 2024 Official leaderboard
7 GPT-4o Nov 2024 98.6% Nov 2024 Official leaderboard
8 Gemini 2.0 Pro 98.5% Feb 2025 Official leaderboard
9 Apertus 70B 74.6% Sep 2025 Lab model card

Labs report scores for 1 model in their cards. Switch the scores above to rank them together.

2 models have held number one on the official leaderboard since its release in February 2025 2 models have held number one with claims included since its release in February 2025

Lab claims count from the day the card came out, independent runs from the model’s release.

OpenAI Anthropic
Own leaderboard Passed 85% in Feb 2025, by o1

Source: Official GSM8K-Platinum leaderboard

Claude 3.5 Sonnet (October 2024) on the official leaderboard passed 85% in October 2024

All the scores we have, one dot each, so a model tested at several settings appears more than once.

On the benchmark’s own leaderboard Reported by the lab in its model card Best so far
0% 20% 40% 60% 80% 100% 2025 Near the ceiling (85%) Claude 3.7 Sonnet Claude 3.5 Sonnet (October 2024) 0% 20% 40% 60% 80% 100% 2025 Near the ceiling (85%) Claude 3.7 Sonnet

Sources: Official GSM8K-Platinum 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.

DateDocumentScoreAs the document writes itSection
Sep 17, 2025 Apertus 70B technical report 74.6 GSM8K Platinum, 0-shot CoT, held-out test suite (Table 21) Capabilities

Versions

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