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OpenAI

o1

Complete specs, pricing, and benchmark data for o1 by OpenAI. Last verified 2026-10-05.

JSON ModeFunctionsStreamingCode Exec
Pricing

Input / 1M tokens

$15.00

Output / 1M tokens

$60.00

Context & Output

Context Window

200K

Max Output

100,000

TTFT

500ms

Speed

20 tok/s

Benchmarks

Arena ELO

1310

Coding ELO

1310

Reasoning ELO

1330

HumanEval

96

MMLU

92

MATH

94

GPQA

92

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Price History (Input $/M tokens)

Strengths
  • +Best reasoning model
  • +Code execution
  • +Extended thinking
Limitations
  • -Very expensive
  • -Slow inference
  • -No streaming

Best For

ReasoningCodingMath

Compare o1 with...

vs Claude Opus 4vs Claude Sonnet 4vs Gemini 2.5 Provs Claude Haiku 4vs DeepSeek R1vs Qwen 2.5 Maxvs Gemini 2.0 Flashvs DeepSeek V3vs o3-minivs o3vs Qwen 3 235B MoEvs Gemini Experimental 1206
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