HLCE: leaderboard

Humanity's Last Code Exam: 235 of the hardest competitive programming problems from ICPC World Finals and IOI (2010-2024). Measures Pass@1 averaged across both contest types.

Metric: Pass@1 (%). Source: github.com. Saturation forecast: Around January 2028. 12 models tracked.

Top models

#ModelScoreOverall rank
1O4 Mini (High)15.84#180 (O4 Mini)
2Gemini 2.5 Pro (Preview 03-25)11.4#123
3O3 Mini (High)10.35#272 (O3 Mini)
4O1 Mini5.95#323
5DeepSeek R14.83#251
6DeepSeek V3 (0324)3.53#340
7Claude 3.7 Sonnet2.48#249
8Claude 3.7 Sonnet (Thinking)2.12#249 (Claude 3.7 Sonnet)
9Claude 3.5 Sonnet1.71#350
10GPT-4o (2024-05-13)1.22#325
11GPT-4o ChatGPT1.18
12GPT-4o Mini0.48#599

No result here: #3 Claude Opus 5.5, #6 GPT-6 Astra, #7 GPT-6.1 Sol.

Interactive version: theaggregate.ai/benchmark?slug=hlce · How It Works · Data refreshed daily, snapshot 2026-10-20.