OpenAI · openai/gpt-5.1-codex

gpt-5.1-codex

Budget Everyday 400k context Hermes Limited

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....

Input / M

$1.250

Output / M

$10.000

Value score

13.82

30d price Δ

Reasoning (AA)

23.7

Coding (AA)

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Tool / agentic

—

Knowledge cutoff

—

Price history

Not enough history yet — newer than the backfill window.

Capability snapshot

Last-known Artificial Analysis indexes via OpenRouter.

Index	Score
context	63.0
general_intelligence	23.7
reasoning	23.7