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GPT-5.3 Codex

openai/gpt-5.3-codex

Coding-optimized GPT model for repository edits, reviews, and agentic software work

Input modalitiesT
Output modalitiesT
Source-linkedgpt-codexClosed weightsReleased 2026-02-05
Report data
Context window400K
Maximum output128K
Provider offers23
Knowledge cutoff2025-08-31
Capabilities

What this model supports

ReasoningYes
Tool callingYes
Structured outputYes
AttachmentsYes
Temperature controlNo
Open weightsNo
Creator
OpenAI
Family
gpt-codex
Modalities
Image, Pdf, Text
License
Not documented
Release date
2026-02-05
Model ID
openai/gpt-5.3-codex
Market availability

Provider pricing

Report price →
Providers offering GPT-5.3 Codex
ProviderProvider model IDContextInput / 1MOutput / 1MCached / 1MFeaturesAll pricing
Poe logoPoeopenai/gpt-5.3-codex400K$1.6$13$0.16R T ·
View
{
  "cache_read": 0.16,
  "input": 1.6,
  "output": 13
}
OpenAI logoOpenAIgpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Abacus logoAbacusgpt-5.3-codex400K$1.75$14$0.18R T S
View
{
  "cache_read": 0.18,
  "input": 1.75,
  "output": 14
}
Cloudflare AI Gateway logoCloudflare AI Gatewayopenai/gpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Azure logoAzuregpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
FreeModel logoFreeModelgpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "cache_write": 1.75,
  "input": 1.75,
  "output": 14
}
Azure Cognitive Services logoAzure Cognitive Servicesgpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
GitHub Copilot logoGitHub Copilotgpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Requesty logoRequestyopenai/gpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Vivgrid logoVivgridgpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
DigitalOcean logoDigitalOceanopenai-gpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
ZenMux logoZenMuxopenai/gpt-5.3-codex400K$1.75$14R T ·
View
{
  "input": 1.75,
  "output": 14
}
LLM Gateway logoLLM Gatewaygpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Pioneer logoPioneergpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "cache_write": 1.75,
  "input": 1.75,
  "output": 14
}
OrcaRouter logoOrcaRouteropenai/gpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
OpenRouter logoOpenRouteropenai/gpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
AIHubMix logoAIHubMixgpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
FastRouter logoFastRouteropenai/gpt-5.3-codex400K$1.75$14R T S
View
{
  "input": 1.75,
  "output": 14
}
Kilo Gateway logoKilo Gatewayopenai/gpt-5.3-codex400K$1.75$14R T ·
View
{
  "input": 1.75,
  "output": 14
}
Neon logoNeongpt-5-3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
OpenCode Zen logoOpenCode Zengpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Vercel AI Gateway logoVercel AI Gatewayopenai/gpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
NanoGPT logoNanoGPTopenai/gpt-5.3-codex400K$1.75$14$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Evidence

Published benchmark results

Design Arena: 3d vs top 8 models
Z.ai: GLM 5.2
1371.0
Claude Fable 5
1366.0
Anthropic: Claude Opus 4.6
1349.0
Kimi K2.6
1348.0
xAI: Grok 4.5
1338.0
Z.ai: GLM 5.1
1336.0
DeepSeek V4 Pro
1326.0
GPT-5.3 Codex
1081.0
Design Arena: androidnative vs top 8 models
Anthropic: Claude Opus 4.8
1371.0
Anthropic: Claude Opus 4.7
1289.0
Z.ai: GLM 5V Turbo
1267.0
GPT-5.5
1259.0
Z.ai: GLM 5.2
1249.0
Gemini 3.5 Flash
1247.0
Z.ai: GLM 5.1
1246.0
GPT-5.3 Codex
1084.0
Design Arena: asciiart vs top 8 models
Claude Fable 5
1374.0
Anthropic: Claude Opus 4.7
1324.0
Gemini 3.1 Pro Preview
1313.0
Anthropic: Claude Opus 4.8
1308.0
Gemini 3.5 Flash
1305.0
Anthropic: Claude Opus 4.6
1303.0
GPT-5.5
1296.0
GPT-5.3 Codex
1194.0
Design Arena: codecategories vs top 8 models
Z.ai: GLM 5.2
1351.0
Claude Fable 5
1345.0
Anthropic: Claude Opus 4.6
1336.0
Anthropic: Claude Opus 4.7
1330.0
xAI: Grok 4.5
1327.0
Z.ai: GLM 5.1
1321.0
Kimi K2.6
1320.0
GPT-5.3 Codex
1186.0
Design Arena: dataviz vs top 8 models
Z.ai: GLM 5.1
1366.0
Claude Fable 5
1363.0
xAI: Grok 4.5
1330.0
Anthropic: Claude Opus 4.6
1322.0
Anthropic: Claude Opus 4.7
1322.0
Anthropic: Claude Sonnet 4.6
1316.0
Z.ai: GLM 5.2
1316.0
GPT-5.3 Codex
1202.0
Design Arena: fullstack vs top 8 models
Anthropic: Claude Opus 4.7
1503.0
Anthropic: Claude Opus 4.8
1321.0
Claude Fable 5
1309.0
Claude Sonnet 5
1298.0
Z.ai: GLM 5.2
1295.0
Anthropic: Claude Opus 4.6
1283.0
Anthropic: Claude Sonnet 4.6
1268.0
GPT-5.3 Codex
1046.0
Design Arena: gamedev vs top 8 models
Claude Fable 5
1383.0
Z.ai: GLM 5.2
1353.0
Claude Sonnet 5
1345.0
GPT-5.5
1344.0
Anthropic: Claude Opus 4.6
1339.0
Anthropic: Claude Opus 4.7
1336.0
MiMo-V2.5-Pro
1334.0
GPT-5.3 Codex
1222.0
Design Arena: godotgamedev vs top 8 models
Anthropic: Claude Sonnet 4.6
1271.0
Kimi K2.5
1256.0
Z.ai: GLM 5.1
1240.0
Z.ai: GLM 5
1231.0
Z.ai: GLM 5V Turbo
1221.0
Z.ai: GLM 4.6
1220.0
Gemini 3.1 Pro Preview
1219.0
GPT-5.3 Codex
1166.0
Design Arena: mobileapps vs top 8 models
Anthropic: Claude Opus 4.8
1287.0
Claude Fable 5
1281.0
MiniMax: MiniMax M3
1271.0
Gemini 3.5 Flash
1259.0
Anthropic: Claude Opus 4.6
1259.0
Anthropic: Claude Sonnet 4.6
1255.0
Z.ai: GLM 5.2
1243.0
GPT-5.3 Codex
1131.0
Design Arena: svg vs top 8 models
Claude Fable 5
1365.0
Gemini 3.1 Pro Preview
1340.0
Gemini 3.5 Flash
1297.0
Anthropic: Claude Opus 4.6
1278.0
GPT-5.5
1277.0
Anthropic: Claude Opus 4.7
1274.0
Z.ai: GLM 5.1
1273.0
GPT-5.3 Codex
1179.0
Design Arena: uicomponent vs top 8 models
Claude Fable 5
1401.0
Anthropic: Claude Opus 4.7
1359.0
Anthropic: Claude Opus 4.6
1343.0
Z.ai: GLM 5.2
1335.0
Z.ai: GLM 5.1
1331.0
Qwen: Qwen3.7 Max
1330.0
Anthropic: Claude Sonnet 4.6
1320.0
GPT-5.3 Codex
1186.0
Design Arena: webapps vs top 8 models
Claude Sonnet 5
1346.0
Claude Fable 5
1333.0
Anthropic: Claude Opus 4.7
1325.0
Anthropic: Claude Opus 4.8
1286.0
Z.ai: GLM 5.2
1278.0
xAI: Grok 4.5
1268.0
Qwen: Qwen3.7 Max
1264.0
GPT-5.3 Codex
1112.0
Design Arena: website vs top 8 models
Z.ai: GLM 5.2
1346.0
Claude Fable 5
1338.0
Anthropic: Claude Opus 4.6
1331.0
Anthropic: Claude Opus 4.7
1329.0
xAI: Grok 4.5
1325.0
Anthropic: Claude Sonnet 4.6
1320.0
Claude Sonnet 5
1314.0
GPT-5.3 Codex
1198.0
SWE-Atlas Codebase QnA vs top 1 models
GPT-5.3 Codex
32.6
SWE-Atlas Refactoring vs top 1 models
GPT-5.3 Codex
42.4
SWE-Atlas Test Writing vs top 1 models
GPT-5.3 Codex
39.0