WhichAI / Models / GPT-5.1-Codex

GPT-5.1-Codex

· verified October 13, 2026

public paid api vision

Provider

Statuspublic

AA Intelligence Index23.7 (official, read October 13, 2026)

Released2025-11-13

Context window400K

ModalitiesText + image

API price $/1M (in / out)$1.25 / $10 (OpenRouter)

Speedn/a

AccessAPI $1.25/$10 per 1M tokens on OpenRouter · listed November 13, 2025

In one line

GPT-5.1-Codex by OpenAI, measured by Artificial Analysis at 23.7 on the Intelligence Index. Added to WhichAI automatically from live data on October 13, 2026: no editorial review yet, so judge it by the numbers, not by a verdict. OpenRouter's description: “GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows.”

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Artificial Analysis Intelligence Index, official scale (the number published on artificialanalysis.ai), relayed by OpenRouter and refreshed automatically: last read October 13, 2026. 210 models carry a current official measurement. A value marked ~ is converted from an earlier snapshot because no current measurement is published; an unmeasured model is never ranked. Context, price, modality and listing dates come from the public OpenRouter model list (refreshed automatically on the live site; static copy retrieved October 3, 2026) and vendor pages. Missing values are not published or not yet verified - shown as -. Sources are linked inside the app (the Ranking chapter and About > Methodology).