o1-mini

OpenAI · Released Sep 12, 2024
DFO score #226 / 697
16.2 leaderboard score
Speed
– Not reported
Input Price
– Not priced
Output Price
– Not priced
Context
– Not reported

Analysis Summary

o1-mini is a compact OpenAI reasoning model from September 2024. Its intelligence index is 9.8, with GPQA at 0.603 and MMLU-Pro at 0.742. The LiveCodeBench result of 0.576 is a relative bright spot in the supplied evidence, though no coding index, pricing, context length, or tool-use information is provided.

That profile makes it more defensible for limited coding trials than for broad content, research, or agent workflows. The available benchmarks do not establish reliable instruction following, long-document handling, or production tool use, so client-facing adoption would require task-specific validation. Without pricing and deployment details, cost-effectiveness cannot be confirmed. Keep it for controlled coding comparisons rather than selecting it as a general-purpose model for current client work.

Assessed September 23, 2026

Editorial notes

o1-mini has a low overall intelligence result but a comparatively strong LiveCodeBench result, making it more relevant to coding experiments than general client work.

The DFO score ranks models on the Artificial Analysis Intelligence Index and is refreshed as new models launch. The write-up and verdict are our own. Feedback?

DFO Verdict

o1-mini has a low overall intelligence result but a comparatively strong LiveCodeBench result, making it more relevant to coding experiments than general client work.

#226 of 697 overall Down 2 this week

Benchmarks

Intelligence Index 9.8 #225 of 435 · Artificial Analysis
Coding Index Not published yet Artificial Analysis
Agentic Index Not published yet Artificial Analysis
Creative Writing Not rated Arena rating
Instruction Following Not rated Arena rating
GPQA Diamond 60.3%
HLE 4.9%
MMLU Pro 74.2%
MATH 500 94.4%
AIME 60.3%
SciCode 32.3%
LiveCodeBench 57.6%

Artificial Analysis data refreshed Oct 8, 2026. Arena ratings from the Oct 2, 2026 text leaderboard, with style control. Bars: magenta = reasoning, ink = coding and agents, cyan = instructions and long context.

Artificial Analysis has not published coding or agentic results for o1-mini yet. Until it does, the model sits below tested models on the Coding and AI Agents lists.

How o1-mini compares

O1-mini ranks #225 of 435 AI models we track for overall intelligence. o1-mini is currently free to use via OpenRouter.

Position in the field
DFO score: ahead of 68% of models #226
worst in fieldmedianbest in field
Price vs frontier peers · $ per 1M tokens
o1-mini $0.00 in $0.00 out
Anthropic: Claude Opus 5.5 $4.00 in $20.00 out
Anthropic: Claude Sonnet 5.5 $2.00 in $10.00 out
Anthropic: Claude Fable 5.1 $10.00 in $50.00 out

Dark bar = input · light bar = output, scaled to the priciest peer.

Context window vs peers · tokens

1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.

Frequently asked questions about o1-mini

How much does o1-mini cost?

o1-mini is currently available for free via OpenRouter.

Who created o1-mini?

o1-mini is developed by OpenAI and was released on September 12, 2024.

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