reasoning
Humanity's Last Exam
- #176default of 58725.8%
Leader: Opus 5.5 · 61.4%
Other · released 2026-09-22
Measured on 17 benchmarks.
General frontier
26.5
#87 of 135 models
includes estimates: 24% of the mix is measured for this model
reasoning
Leader: Opus 5.5 · 61.4%
knowledge
Leader: Opus 5.5 · 46.4
agentic
Leader: Sonnet 5.5 · 1823
agentic
Leader: Gemini 4 · 77.5%
coding
Leader: Opus 5.5 · 66.9%
coding
Leader: Sonnet 5.5 · 63.6%
composite
Leader: Opus 5.5 · 57.6
cost
Leader: GPT-6 Luna · $0.00
cost
Leader: GPT-6 Luna · $10.63
economics
Leader: Muse Wonder Full (Max) · 32.6%
economics
Leader: Opus 5.5 · 1866
knowledge
Leader: Fable 5.1 · 67.2%
knowledge
Leader: MiniCPM5-1B (Non-reasoning) · 99.1%
long-context
Leader: Kimi K3 · 88.7%
reasoning
Leader: Muse Wonder Full (Max) · 32.9%
speed
Leader: Gemini 2.5 Flash Lite · 0.3s
speed
Leader: Celeris-1 · 1564.1