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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

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
Poeopenai/gpt-5.3-codex400K$1.600$13.000$0.160R T ·
View
{
  "cache_read": 0.16,
  "input": 1.6,
  "output": 13
}
Vercel AI Gatewayopenai/gpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Vivgridgpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
DigitalOceanopenai-gpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
ZenMuxopenai/gpt-5.3-codex400K$1.750$14.000R T ·
View
{
  "input": 1.75,
  "output": 14
}
OpenAIgpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
OrcaRouteropenai/gpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Pioneergpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "cache_write": 1.75,
  "input": 1.75,
  "output": 14
}
LLM Gatewaygpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Abacusgpt-5.3-codex400K$1.750$14.000$0.180R T S
View
{
  "cache_read": 0.18,
  "input": 1.75,
  "output": 14
}
Cloudflare AI Gatewayopenai/gpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Azuregpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
FreeModelgpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "cache_write": 1.75,
  "input": 1.75,
  "output": 14
}
Kilo Gatewayopenai/gpt-5.3-codex400K$1.750$14.000R T ·
View
{
  "input": 1.75,
  "output": 14
}
OpenRouteropenai/gpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
FastRouteropenai/gpt-5.3-codex400K$1.750$14.000R T S
View
{
  "input": 1.75,
  "output": 14
}
Azure Cognitive Servicesgpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
AIHubMixgpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Neongpt-5-3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
GitHub Copilotgpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
OpenCode Zengpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
Requestyopenai/gpt-5.3-codex400K$1.750$14.000$0.175R T S
View
{
  "cache_read": 0.175,
  "input": 1.75,
  "output": 14
}
NanoGPTopenai/gpt-5.3-codex400K$1.750$14.000$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
1361.0
xAI: Grok 4.5
1352.0
Kimi K2.6
1348.0
Anthropic: Claude Opus 4.6
1348.0
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
1370.0
Anthropic: Claude Opus 4.7
1290.0
Z.ai: GLM 5V Turbo
1267.0
GPT-5.5
1260.0
Z.ai: GLM 5.2
1250.0
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
1369.0
Anthropic: Claude Opus 4.7
1326.0
Gemini 3.1 Pro Preview
1316.0
Gemini 3.5 Flash
1308.0
Anthropic: Claude Opus 4.8
1305.0
Anthropic: Claude Opus 4.6
1305.0
GPT-5.5
1302.0
GPT-5.3 Codex
1197.0
Design Arena: codecategories vs top 8 models
Z.ai: GLM 5.2
1352.0
Claude Fable 5
1344.0
Anthropic: Claude Opus 4.6
1336.0
Anthropic: Claude Opus 4.7
1330.0
xAI: Grok 4.5
1328.0
Z.ai: GLM 5.1
1321.0
Kimi K2.6
1320.0
GPT-5.3 Codex
1187.0
Design Arena: dataviz vs top 8 models
Claude Fable 5
1372.0
Z.ai: GLM 5.1
1366.0
xAI: Grok 4.5
1330.0
Anthropic: Claude Opus 4.6
1321.0
Anthropic: Claude Opus 4.7
1320.0
Z.ai: GLM 5.2
1318.0
Anthropic: Claude Sonnet 4.6
1317.0
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
1322.0
Claude Sonnet 5
1314.0
Z.ai: GLM 5.2
1298.0
Claude Fable 5
1296.0
Anthropic: Claude Opus 4.6
1286.0
Anthropic: Claude Sonnet 4.6
1271.0
GPT-5.3 Codex
1048.0
Design Arena: gamedev vs top 8 models
Claude Fable 5
1387.0
Z.ai: GLM 5.2
1354.0
Claude Sonnet 5
1345.0
GPT-5.5
1344.0
Anthropic: Claude Opus 4.6
1339.0
MiMo-V2.5-Pro
1334.0
Anthropic: Claude Opus 4.7
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
1282.0
MiniMax: MiniMax M3
1273.0
Anthropic: Claude Opus 4.6
1259.0
Gemini 3.5 Flash
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
1364.0
Gemini 3.1 Pro Preview
1340.0
Gemini 3.5 Flash
1297.0
Anthropic: Claude Opus 4.6
1279.0
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
1406.0
Anthropic: Claude Opus 4.7
1358.0
Anthropic: Claude Opus 4.6
1344.0
Z.ai: GLM 5.2
1336.0
Qwen: Qwen3.7 Max
1331.0
Z.ai: GLM 5.1
1330.0
Anthropic: Claude Sonnet 4.6
1321.0
GPT-5.3 Codex
1186.0
Design Arena: webapps vs top 8 models
Claude Sonnet 5
1351.0
Claude Fable 5
1338.0
Anthropic: Claude Opus 4.7
1326.0
Anthropic: Claude Opus 4.8
1288.0
Z.ai: GLM 5.2
1280.0
xAI: Grok 4.5
1270.0
Qwen: Qwen3.7 Max
1267.0
GPT-5.3 Codex
1113.0
Design Arena: website vs top 8 models
Z.ai: GLM 5.2
1346.0
Claude Fable 5
1336.0
Anthropic: Claude Opus 4.6
1331.0
Anthropic: Claude Opus 4.7
1329.0
xAI: Grok 4.5
1323.0
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