Benchmark Almanac

DiG-bench

Claude Opus 5 71.4% leads since August 2026
Not in model cards

Agents play text-only games whose transformation rules and win conditions are hidden, so they must discover the rules by experimenting. Every game was beaten by at least one human on a first attempt.

70 games in seven difficulty tiers, 21 public and the rest private. The board has basic-harness and agentic-harness tracks. Supplying the true rules lifts win rates sharply, so the gap measures discovery.

Released
August 2026
Kind
Puzzles and chess
Level
Everyday
Scored
Checked automatically
Answers
Agent task
Tasks
Public, plus a private test set
Strongest model tested
Claude Opus 5 #10 on the capability index
Last model added
July 2026
Scores refreshed
November 12th, 2026

In the authors’ words

Discovery—formulating novel generalizations—is a central part of the scientific process. Despite its importance, there is a gap in the current AI benchmark landscape, with few benchmarks directly probing the capacity for discovering new knowledge with experimentation in controlled environments where the objective is unknown. To address this gap, we release a new benchmark: DiG-bench (Discovery in Games). DiG-bench consists of a set of 70 independent games. Each game is encoded as a short string and has unique transformation rules that must be discovered through interaction and experimentation. The levels of the game present a series of challenges to test whether the rules have been discovered, where the win conditions for each level are also unknown. We provide games at seven tiers of difficulty for AI agents. The lowest tier is routinely solvable by multiple models, while the highest tier challenges the best models in agentic harnesses. All 70 games were solved by at least one human on first attempt. A subset of 21 games is released publicly, and the remainder is held private for secure evaluation.

Abstract of DiG-bench: Discovery in Games (arXiv:2608.12593, CC0)
8
Entries on its own leaderboard, 7 models we track

Claude Opus 5 leads with 71.4% among models released by July 2026

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.

The newest model with a score here came out in July 2026, 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 Opus 5 high 71.4%
  2. 2 GPT-5.5 high 25.7%
  3. 3 Kimi K3 22.9%
  4. 4 Gemini 3.1 Pro high 16.8%
  5. 5 GLM-5.2 15.2%
  6. 6 DeepSeek V4 Flash 0731 11.4%
  7. 7 DeepSeek V4 Pro Preview (unlisted preview) 4.29%
  8. 8 Qwen3.6 27B 1.43%

Source: Official DiG-bench leaderboard

#EntryScoreSettingDateSource
1 Claude Opus 5 71.4% high, Basic Jul 2026 Official leaderboard
2 GPT-5.5 25.7% high, Basic Apr 2026 Official leaderboard
3 Kimi K3 22.9% Basic Jul 2026 Official leaderboard
4 Gemini 3.1 Pro 16.8% high, Basic Feb 2026 Official leaderboard
5 GLM-5.2 15.2% Basic Jun 2026 Official leaderboard
6 DeepSeek V4 Flash 0731 11.4% Basic Jul 2026 Official leaderboard
7 DeepSeek V4 Pro Preview (unlisted preview) 4.29% Basic Official leaderboard
8 Qwen3.6 27B 1.43% Basic Apr 2026 Official leaderboard

Number one over time

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

Anthropic
Own leaderboard Not tested since Aug 2026

Source: Official DiG-bench leaderboard

Scores over time

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 Best so far
0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) Claude Opus 5 GPT-5.5 Gemini 3.1 Pro 0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) Claude Opus 5 GPT-5.5

Source: Official DiG-bench leaderboard

No lab model card reports it yet

We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark.

More in Games and long tasks

All 82 in Games and long tasks
  • ARC-AGI-3 In use Interactive game environments where agents must explore, infer goals and rules, and act efficiently without instructions. GPT-6 Astra 99.95%
  • Orak Fading LLM agents play 12 popular video games across most genres through an MCP interface. Each game scores in-game progress or outcomes, and the board ranks models by their average rank across the games. Gemini 2.5 Pro 3.90
  • MineDojo Fading Agents complete open-ended tasks in Minecraft, such as mining blocks and fighting mobs, from a large simulation suite. Programmatic checks score many tasks. Seed2.0 Pro 49%
  • TextQuests Only in system cards Agents play 25 classic interactive fiction games. The score is harmful actions per 100 steps, where lower is better. The board also reports game progress. Llama 4 Scout 7.00
  • GameWorld Only in system cards Multimodal game agents play 34 browser games across 170 tasks. Outcomes are checked from the game state. GPT-6.1 Terra 76.8%
  • Swarm Bench Only in system cards Models orchestrate agent swarms on complex tasks that benefit from coordinated decomposition and parallel execution. Kimi K3 76.3%