OpenAI

GPT-5.1-Codex

Released 2025-11-13

GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....

You send / 1M

$1.25

tokens in

It replies / 1M

$10.00

tokens out

Memory

400K

tokens it can read at once

Typical request

$0.0066

1,000 words in, 400 out

Data privacy

No training or retention: Yes. At least one provider serves it with zero data retention.

ProviderYou send / 1MIt replies / 1MUptimePrivacy policy
Azure$1.25$10.00100%Read

Based on OpenRouter and Vercel AI Gateway data. Confirm terms with the provider before sending sensitive data.

What it can do

  • Reads: text, image
  • Writes: text
  • Reasoning: Yes
  • Tool calling: Yes
  • Longest reply: 128K tokens
  • Repeated text is billed at $0.130 per 1M (prompt caching)
  • Intelligence score: 23.7 / 100 (Artificial Analysis)

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