System Card← leaderboard
OpenAI

GPT Sol

#7of 28 · general

GPT-6.1 Sol

1.1Mcontext
$2 / $10per 1M in / out
2026-09-29released
2026-04-30knowledge cutoff
50100Coding 71 · #7 of 28Agents 58 · #9 of 29Cyber 10 · #18 of 24Engineering 74 · #4 of 26Math 82 · #3 of 26Health 61 · #7 of 24Legal 55 · #10 of 27Professional 63 · #8 of 28Writing 40 · #12 of 21Instruct 61 · #9 of 25Hallucination 71 · #2 of 26Multimodal 80 · #4 of 24
Coding71#7
Agents58#9
Cyber10#18
Engineering74#4
Math82#3
Health61#7
Legal55#10
Professional63#8
Writing40#12
Instruct61#9
Hallucination71#2
Multimodal80#4

History

ECI162164166168170Oct 2026GPT-5.6 Sol · $2/M in · 2026-07-09 · still served · Epoch Capabilities Index 162.8 ECI pointsGPT-6 Sol · $2/M in · 2026-09-22 · still served · Epoch Capabilities Index 163.7 ECI pointsGPT-6.1 Sol · $2/M in · 2026-09-29 · still served · Epoch Capabilities Index 168.4 ECI points6 Sol5.6 Sol
  • OpenAI
  • older → newer
$ / M input tokens3 of 176 priced models · price is a third-party claim, not a vendor quote

Effort

GPT-6.1 Sol
% of best score02550751000.3×0.5×0.7×1×1.5×× the best effort’s cost · log scaleLowMedHighXhighMax

Measured

≈ imputed · amber dot = lab-self-reported among the sources
GPQA Diamond95.4%#4Epoch AI
HLE52.9%#6Artificial Analysis
LiveBench81.6%#4LiveBench
SciCode55.8%#15Artificial AnalysisEpoch AI
CritPt31.7%#3Artificial AnalysisEpoch AI
APEX Agents60.0%#7Epoch AILLM Stats
GDPval54.6%#15Artificial Analysis
Arena1484#7Arena
AA Index51.8#8Artificial Analysis
Vals Index61.1#8Vals.ai
Epoch Capabilities Index168.4#3Epoch AI

Neighbors

GPT Astra→ pricierClaude Sonnet→ near-twinKimi→ stronger agent · stronger codingClaude Opus→ stronger agent · pricierQwen Max→ weaker math