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GPT-5.3 Codex

GPT-5.3-Codex advances both the frontier coding performance of GPT‑5.2-Codex and the reasoning and professional knowledge capabilities of GPT‑5.2, together in one model, which is also 25% faster.

text + image + file → text · made by OpenAI

$1.75$14per Mtok in / out
Databricks · 10 sellers

Sold by 15 ways

SellerLaneRate
Databricks cloudstandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cached$1.75per Mtok cache writeraw.githubusercontent.com · read 2026-09-16
DigitalOcean cloudstandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedmodels.dev · read 2026-09-16
Microsoft Azure AI cloudstandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedmodels.dev · read 2026-09-16
Microsoft Azure AI cloudpriority$3.5per Mtok in$28per Mtok out$0.35per Mtok cachedprices.azure.com · read 2026-08-24
ElectronHub aggregatorstandard$1.75per Mtok in$14per Mtok outapi.electronhub.ai · read 2026-09-16
GitHub Copilot aggregatorstandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedmodels.dev · read 2026-09-16
Nous Research aggregatorstandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedinference-api.nousresearch.com · read 2026-09-12
OpenRouter 2 ways$1.75per Mtok in$14per Mtok out$0.17per Mtok cached
OpenRouter aggregatorstandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedopenrouter.ai · read 2026-08-24
OpenRouter aggregatoropenai/fast$3.5per Mtok in$28per Mtok out$0.35per Mtok cachedopenrouter.ai · read 2026-08-25
Requesty 2 ways$1.75per Mtok in$14per Mtok out$0.17per Mtok cached
Requesty aggregatorazure$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedrouter.requesty.ai · read 2026-08-28
Requesty aggregatoropenai-responses$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedrouter.requesty.ai · read 2026-08-28
Vercel AI Gateway 2 ways$1.75per Mtok in$14per Mtok out$0.17per Mtok cached
Vercel AI Gateway aggregatorstandard$1.75per Mtok in$14per Mtok out$0.17per Mtok cachedvercel.com · read 2026-08-25
Vercel AI Gateway aggregatornot on the seller's list todaysandbox$1.75per Mtok in$14per Mtok outvercel.com · read 2026-08-25
Vercel AI Gateway aggregatorfast$3.5per Mtok in$28per Mtok out$0.35per Mtok cachedai-gateway.vercel.sh · read 2026-08-25
Venice AI aggregatorstandard$2.19per Mtok in$17.5per Mtok out$0.22per Mtok cachedmodels.dev · read 2026-09-16

Measured 26 standings

PlaceBoardMetricScore
6thof 50Metr time horizons — Epoch AIaverage_score0.745
8thof 112Ale bench — Epoch AIPerformance (xhigh)1655.22
9thof 142terminal-bench@2.0Accuracy78.4
11thof 202Terminalbench — Epoch AIAccuracy mean0.784
15thof 60Vending bench 2 — Epoch AIScore5940.124
15thof 60Vending-Bench 2 — Current leaderboardMoney Balance (average across 5 runs)5940.12
16thof 35Swe bench verified — Epoch AImean_score (high)74.793
16thof 170Weirdml — Epoch AIAccuracy79.3
26thof 65Apex agents — Epoch AIPass@1 score0.318
35thof 42Design Arena · godotgamedev (agents)Elo1124
44thof 55Design Arena · androidnative (agents)Elo1084
55thof 92Design Arena · asciiart (models)Elo1169
60thof 62Design Arena · webapps (agents)Elo1048
61stof 302Artificial Analysis · Intelligence IndexArtificial Analysis Intelligence Index (xhigh)33
63rdof 64Design Arena · fullstack (agents)Elo992
63rdof 63Design Arena · mobileapps (agents)Elo1082
70thof 109Design Arena · svg (models)Elo1154
72ndof 128LMArena · WebDevScore (Elo)1409
83rdof 155Design Arena · gamedev (models)Elo1184
84thof 656Epoch capabilities index — Epoch AIECI Score (high)156.4
87thof 121Webdev arena — Epoch AIArena Score1369
93rdof 152Design Arena · dataviz (models)Elo1180
98thof 150Design Arena · uicomponent (models)Elo1152
99thof 162Design Arena · website (models)Elo1175
100thof 156Design Arena · codecategories (models)Elo1160
125thof 147Design Arena · 3d (models)Elo1036

About

GPT-5.3 Codex — a text model from OpenAI, sold by 10 companies from $1.75 in and $14 out per million tokens, placed 11th 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 February 2026, 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 and agents. Ten companies sell it. The cheapest is $1.75 in and $14 out per million tokens at Databricks. Beside the standard rate there are faster and separately routed lanes. It has been measured on 26 boards, and stands best at 11th 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
February 2026
Knowledge to
August 2025
Licence
not read
Sellers
10
Maker's own price
not read
Price
$1.75 in and $14 out per million tokens — Databricks
Boards
26
Best place
11th of 202 — Terminalbench — Epoch AI

Known as 5 names

GPT-5.3-Codex5.3 codexopenai/gpt-5.3-codexazure/gpt-5.3-codex@eastus2openai-responses/gpt-5.3-codex