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GPT-5.2 Codex

GPT‑5.2-Codex is a version of GPT‑5.2⁠ further optimized for agentic coding in Codex, including improvements on long-horizon work through context compaction, stronger performance on large code changes like refactors and migrations, improved performance in Windows environments, and significantly stronger cybersecurity capabilities.

text + image + file → text · made by OpenAI

$1.75→$14per Mtok in / out
Microsoft Azure AI · 5 sellers

Sold by 10 ways

SellerLaneRate
Databricks 0 ways$1.75per Mtok in$14per Mtok out$0.17per Mtok cached$1.75per Mtok cache write
Databricks cloudnot on the seller's list todaystandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cached$1.75per Mtok cache writeraw.githubusercontent.com · read 2026-09-22
Microsoft Azure AI cloudstandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedmodels.dev · read 2026-10-31
AtlasCloud 0 ways$1.75per Mtok in$14per Mtok out$0.17per Mtok cached
AtlasCloud aggregatornot on the seller's list todaystandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedapi.atlascloud.ai · read 2026-09-20
GitHub Copilot 0 ways$1.75per Mtok in$14per Mtok out$0.17per Mtok cached
GitHub Copilot aggregatornot on the seller's list todaystandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedmodels.dev · read 2026-09-04
Nous Research aggregatorstandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedinference-api.nousresearch.com · read 2026-09-12
OpenRouter aggregatorstandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedopenrouter.ai · read 2026-08-24
Requesty aggregatorazure$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedrouter.requesty.ai · read 2026-08-28
Requesty aggregatornot on the seller's list todayopenai-responses$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedrouter.requesty.ai · read 2026-08-28
Vercel AI Gateway aggregatorstandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedai-gateway.vercel.sh · read 2026-08-25
Venice AI 0 ways$2.19per Mtok in$17.5per Mtok out$0.22per Mtok cached
Venice AI aggregatornot on the seller's list todaystandard$2.19per Mtok in$17.5per Mtok out$0.22per Mtok cachedmodels.dev · read 2026-09-16

Measured 9 standings

PlaceBoardMetricScore
26thof 54Design Arena · androidnative (agents)Elo1176
31stof 202Terminalbench — Epoch AIAccuracy mean0.665
34thof 50Design Arena · godotgamedev (agents)Elo1142
38thof 132Ale bench — Epoch AIPerformance1299.9
59thof 61Design Arena · fullstack (agents)Elo993
63rdof 68Design Arena · mobileapps (agents)Elo1088
65thof 68Design Arena · webapps (agents)Elo1039
112thof 135Webdev arena — Epoch AIArena Score1338.7
114thof 141LMArena · WebDevScore (Elo)1339

About

GPT-5.2 Codex — a text model from OpenAI, sold by 5 companies from $1.75 in and $14 out per million tokens, placed 31st of 202 on Terminalbench — Epoch AI.

It takes text, images and files and returns text, with a context window of 400,000 tokens. It was published in December 2025, trained on material up to August 2025. Its sellers say it can reason step by step and call a tool. The catalogue files it under code. Five companies sell it. The cheapest is $1.75 in and $14 out per million tokens at Microsoft Azure AI. Beside the standard rate there is a separately routed lane. It has been measured on 9 boards, and stands best at 31st of 202 on Terminalbench — Epoch AI.

Every current figure

Maker
OpenAI
Register
model
Takes
text + image + file
Returns
text
Context
400,000 tokens
Longest answer
128,000 tokens
Published
December 2025
Knowledge to
August 2025
Licence
not read
Sellers
5
Maker's own price
not read
Price
$1.75 in and $14 out per million tokens — Microsoft Azure AI
Boards
9
Best place
31st of 202 — Terminalbench — Epoch AI

Known as 6 names

gpt-5.2-codexGPT 5.2 Codexopenai/gpt-5.2-codex5.2 codexazure/gpt-5.2-codex@eastus2openai-responses/gpt-5.2-codex