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GPT-5.1

OpenAI410K contextVisionReasoningTool callingWeb search

LMArena score 1443 · #68 overall · #94 in coding (2026-10-13)

Official price from OpenAI

Pricing page

Per million tokens

Input
$1.25
Output
$10.00
Cached input
$0.125
Batch input / output
$0.625 / $5.00
  • Up to 128K output tokens per request.

Estimate your monthly cost

Est. per month = input tokens × input price + output tokens × output price. Prices are per million tokens, so 10M input tokens at $3.00 cost $30.

From OpenAI: $32.50 a month.

Where to buy it (3)

Sorted by your monthly estimate. Prices per million tokens.

  • Azure OpenAI

    Input / output
    $1.25 / $10.00
    Context
    272K
    Per month
    $32.50

    azure/gpt-5.1

  • Gmi

    Input / output
    $1.25 / $10.00
    Context
    410K
    Per month
    $32.50

    gmi/openai/gpt-5.1

  • OpenAIOfficial

    Input / output
    $1.25 / $10.00
    Context
    272K
    Per month
    $32.50

    gpt-5.1

  • Azure OpenAI

    Input / output
    $1.72 / $13.75
    Context
    272K
    Per month
    $44.69

    azure/us-gov/gpt-5.1

Cloud and hosted sellers may add regional pricing, minimums or platform fees. Supports: Vision, Reasoning, Tool calling, Web search.

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