Skip to content
OneAtlas

GPT-5.1 Codex

openai/gpt-5.1-codex
OpenAITextClosed weightsReasoningTool callStructured output
Compare 18 providers

Codex GPT for repository edits, code review, and practical software agents

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....

Context

400K

400,000 tokens

Max output

128K

128,000 tokens

Input

$1.25

per 1M tokens

Output

$10.00

per 1M tokens

Providers

18

18 listings

Intelligence

23.7

Intelligence Index

Pricing

USD per 1M tokens · listed by OrcaRouter

Token typeStandard
Input$1.25
Output$10.00
Cache read$0.13

Lowest input price across providers: $1.07.

Capabilities

ReasoningYes

Effort: low, medium, high

Tool callYes
Structured outputYes
TemperatureNo
AttachmentsYes
Interleaved reasoningNo
Open weightsNo
ModeratedNo

Input

TextImage

Output

Text

Benchmarks

Published scores and Design Arena Elo

Design Arena categoryEloWin rateArena rank
UI component1,23260.0%#48
Data viz1,21355.9%#55
Mobile apps1,19153.4%#20
Website1,16056.1%#88
Code1,15154.6%#85
Game dev1,13850.5%#81
Full stack1,08644.5%#30
Web apps1,01844.0%#44

Rankings

Position on each OneAtlas leaderboard

Providers · 18

18 listings

OrcaRouterNanoGPTLLM GatewayVercel AI GatewayKilo GatewayEden AIDevPass (LLM Gateway)AIHubMixPoeOpenCodeZenMuxAbacusAzureAzure Cognitive ServicesHeliconeImpossiblJiekou.AIVivgrid
ProviderModel IDContextInput limitOutputInput $Output $Reasoning $Cache readCache writeAudio inAudio outReasoningToolsStructuredTemp.Updated
Abacusgpt-5.1-codex400K272K128K$1.25$10.00—$0.13———YesYesYesNoNov 13, 2025
AIHubMixgpt-5.1-codex400K272K128K$1.25$10.00—$0.13———YesYesYesNoNov 13, 2025
Azuregpt-5.1-codex400K272K128K$1.25$10.00—$0.13———YesYesYesNoNov 14, 2025
Azure Cognitive Servicesgpt-5.1-codex400K272K128K$1.25$10.00—$0.13———YesYesYesNoNov 14, 2025
DevPass (LLM Gateway)gpt-5.1-codex400K272K128K$1.25$10.00—$0.13———YesYesYesNoNov 13, 2025
Eden AIazure/gpt-5.1-codex272K—128K$1.25$10.00—$0.13———YesYesYesNoNov 13, 2025
Heliconegpt-5.1-codex400K272K128K$1.25$10.00—$0.13———YesYesUnknownNoNov 13, 2025
Impossiblopenai/gpt-5.1-codex400K272K128K$1.25$10.00—$0.13———YesYesYesNoNov 13, 2025
Jiekou.AIgpt-5.1-codex400K272K128K$1.19$9.50—$0.12———YesYesYesNoNov 13, 2025
Kilo Gatewayopenai/gpt-5.1-codex400K272K128K$1.25$10.00—$0.13———YesYesYesNoNov 13, 2025
LLM Gatewayazure/gpt-5.1-codex400K272K272K$1.25$10.00—————YesYesNoNoNov 13, 2025
NanoGPTopenai/gpt-5.1-codex400K400K128K$1.25$10.00—$0.13———YesNoNoNoNov 13, 2025
OpenCodegpt-5.1-codex400K272K128K$1.07$8.50—$0.11———YesYesYesNoNov 13, 2025
OrcaRouteropenai/gpt-5.1-codex400K272K128K$1.25$10.00—$0.13———YesYesYesNoNov 13, 2025
Poeopenai/gpt-5.1-codex400K272K128K$1.10$9.00—$0.11———YesYesUnknownNoNov 13, 2025
Vercel AI Gatewayopenai/gpt-5.1-codex400K272K128K$1.25$10.00—$0.13———YesYesYesYesNov 13, 2025
Vivgridgpt-5.1-codex400K272K128K$1.25$10.00—$0.13———YesYesYesNoNov 13, 2025
ZenMuxopenai/gpt-5.1-codex400K—128K$1.25$10.00—$0.13———YesYesUnknownYesNov 13, 2025