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GPT-5.5

openai/gpt-5.5

Default frontier GPT for coding, computer use, research, and knowledge work

Source-linkedgptClosed weightsReleased 2026-04-23
Report data
Context window1.05M
Maximum output128K
Provider offers36
Knowledge cutoff2025-12-01
Capabilities

What this model supports

ReasoningYes
Tool callingYes
Structured outputYes
AttachmentsYes
Temperature controlNo
Open weightsNo
Creator
OpenAI
Family
gpt
Modalities
Image, Pdf, Text
License
Not documented
Release date
2026-04-23
Model ID
openai/gpt-5.5
Market availability

Provider pricing

Report price →
Providers offering GPT-5.5
ProviderProvider model IDContextInput / 1MOutput / 1MCached / 1MFeaturesAll pricing
Snowflake Cortexopenai-gpt-5.51.05MR T S
View
{}
Model Oracle AIgpt-5.51.05MR T S
View
{}
UnoRoutergpt-5.5:free1.05M$0.000$0.000R T S
View
{
  "input": 0,
  "output": 0
}
Kenarigpt-5-51.05M$0.000$0.000R T S
View
{
  "input": 0,
  "output": 0
}
UnoRoutergpt-5.51.05M$0.188$1.125R T S
View
{
  "input": 0.1875,
  "output": 1.125
}
FrogBotgpt-5-5272K$2.500$15.000$0.250R T ·
View
{
  "cache_read": 0.25,
  "input": 2.5,
  "output": 15
}
Xpersonaxpersona-gpt-5.51M$3.000$18.000$0.300R T S
View
{
  "cache_read": 0.3,
  "input": 3,
  "output": 18,
  "reasoning": 18
}
Poeopenai/gpt-5.5400K$4.545$27.273$0.455R T S
View
{
  "cache_read": 0.4545,
  "input": 4.5455,
  "output": 27.2727
}
NEAR AI Cloudopenai/gpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
    "output": 45
  },
  "input": 5,
  "output": 30,
  "tiers": [
    {
      "cache_read": 1,
      "input": 10,
      "output": 45,
      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
LLM Gatewaygpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
    "output": 45
  },
  "input": 5,
  "output": 30,
  "tiers": [
    {
      "cache_read": 1,
      "input": 10,
      "output": 45,
      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
Cloudflare AI Gatewayopenai/gpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
    "output": 45
  },
  "input": 5,
  "output": 30,
  "tiers": [
    {
      "cache_read": 1,
      "input": 10,
      "output": 45,
      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
Azuregpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
    "output": 45
  },
  "input": 5,
  "output": 30,
  "tiers": [
    {
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      "input": 10,
      "output": 45,
      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
OpenCode Zengpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
    "output": 45
  },
  "input": 5,
  "output": 30,
  "tiers": [
    {
      "cache_read": 1,
      "input": 10,
      "output": 45,
      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
GMI Cloudopenai/gpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "input": 5,
  "output": 30
}
OpenRouteropenai/gpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "input": 5,
  "output": 30
}
Databricksdatabricks-gpt-5-51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
    "output": 45
  },
  "input": 5,
  "output": 30,
  "tiers": [
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      "input": 10,
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      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
FastRouteropenai/gpt-5.51.05M$5.000$30.000R T S
View
{
  "input": 5,
  "output": 30
}
Pioneergpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "cache_write": 5,
  "input": 5,
  "output": 30
}
Azure Cognitive Servicesgpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
    "output": 45
  },
  "input": 5,
  "output": 30,
  "tiers": [
    {
      "cache_read": 1,
      "input": 10,
      "output": 45,
      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
AIHubMixgpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
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  },
  "input": 5,
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  "tiers": [
    {
      "cache_read": 1,
      "input": 10,
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      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
NanoGPTopenai/gpt-5.51M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "input": 5,
  "output": 30
}
GitHub Copilotgpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
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  },
  "input": 5,
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      "tier": {
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      }
    }
  ]
}
Vercel AI Gatewayopenai/gpt-5.51M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "input": 5,
  "output": 30
}
Vivgridgpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
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  },
  "input": 5,
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  "tiers": [
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      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
DigitalOceanopenai-gpt-5.51M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
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  "input": 5,
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  "tiers": [
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      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
CrossModelopenai/gpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "cache_write": 5,
  "context_over_200k": {
    "cache_read": 1,
    "cache_write": 10,
    "input": 10,
    "output": 45
  },
  "input": 5,
  "output": 30,
  "tiers": [
    {
      "cache_read": 1,
      "cache_write": 10,
      "input": 10,
      "output": 45,
      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
ZenMuxopenai/gpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
    "output": 45
  },
  "input": 5,
  "output": 30,
  "tiers": [
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      "cache_read": 1,
      "input": 10,
      "output": 45,
      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
OpenAIgpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
    "output": 45
  },
  "input": 5,
  "output": 30,
  "tiers": [
    {
      "cache_read": 1,
      "input": 10,
      "output": 45,
      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
Merge Gatewayopenai/gpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
    "output": 45
  },
  "input": 5,
  "output": 30,
  "tiers": [
    {
      "cache_read": 1,
      "input": 10,
      "output": 45,
      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
OrcaRouteropenai/gpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "context_over_200k": {
    "cache_read": 1,
    "input": 10,
    "output": 45
  },
  "input": 5,
  "output": 30,
  "tiers": [
    {
      "cache_read": 1,
      "input": 10,
      "output": 45,
      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
Kilo Gatewayopenai/gpt-5.51.05M$5.000$30.000$0.500R T ·
View
{
  "cache_read": 0.5,
  "input": 5,
  "output": 30
}
Abacusgpt-5.51M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "input": 5,
  "output": 30
}
Perplexity Agentopenai/gpt-5.51.05M$5.000$30.000$0.500R T ·
View
{
  "cache_read": 0.5,
  "input": 5,
  "output": 30
}
FreeModelgpt-5.51.05M$5.000$30.000$0.500R T S
View
{
  "cache_read": 0.5,
  "cache_write": 5,
  "input": 5,
  "output": 30
}
Amazon Bedrockopenai.gpt-5.5272K$5.500$33.000$0.550R T S
View
{
  "cache_read": 0.55,
  "input": 5.5,
  "output": 33
}
Venice AIopenai-gpt-551M$6.250$37.500$0.625R T S
View
{
  "cache_read": 0.625,
  "context_over_200k": {
    "cache_read": 1.25,
    "input": 12.5,
    "output": 56.25
  },
  "input": 6.25,
  "output": 37.5,
  "tiers": [
    {
      "cache_read": 1.25,
      "input": 12.5,
      "output": 56.25,
      "tier": {
        "size": 272000,
        "type": "context"
      }
    }
  ]
}
Evidence

Published benchmark results

ARC-AGI-2 vs top 5 models
GPT-5.5
85.0
GPT-5.4 Pro
83.3
Gemini 3.1 Pro Preview
77.1
GPT-5.4
73.3
Gemini 3.5 Flash
72.1
Agentic Index vs top 8 models
GPT-5.6 Sol
54.0
Claude Fable 5
52.8
GPT-5.6 Terra
47.4
Anthropic: Claude Opus 4.8
47.2
Claude Sonnet 5
46.7
xAI: Grok 4.5
45.7
GPT-5.6 Luna
45.6
GPT-5.5
44.9
Artificial Analysis Coding Agent Index vs top 1 models
GPT-5.5
57.8
BrowseComp vs top 7 models
GPT-5.6 Sol
90.4
GPT-5.5 Pro
90.1
GPT-5.4 Pro
89.3
GPT-5.6 Terra
87.5
Claude Sonnet 5
84.7
GPT-5.5
84.4
MiniMax-M3
83.5
Coding Index vs top 7 models
GPT-5.6 Sol
77.4
GPT-5.6 Terra
76.7
Claude Fable 5
76.5
GPT-5.5
74.9
Anthropic: Claude Opus 4.8
74.3
Anthropic: Claude Opus 4.7
73.6
xAI: Grok 4.5
72.4
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-5.5
1260.0
Design Arena: agenticgamedev vs top 7 models
Anthropic: Claude Opus 4.7
1277.0
Anthropic: Claude Opus 4.8
1251.0
Gemini 3.5 Flash
1208.0
Z.ai: GLM 5.1
1206.0
GPT-5.5
1201.0
Anthropic: Claude Sonnet 4.6
1191.0
Kimi K2.6
1175.0
Design Arena: agentichtmlslides vs top 8 models
Claude Fable 5
1254.0
Kimi K2.6
1248.0
Anthropic: Claude Opus 4.7
1243.0
Anthropic: Claude Opus 4.8
1227.0
Gemini 3.1 Pro Preview
1226.0
Z.ai: GLM 5.1
1205.0
Gemini 3.5 Flash
1162.0
GPT-5.5
1084.0
Design Arena: agenticslides vs top 7 models
Anthropic: Claude Opus 4.7
1334.0
Anthropic: Claude Opus 4.8
1294.0
Z.ai: GLM 5.1
1245.0
Gemini 3.5 Flash
1244.0
Kimi K2.6
1187.0
Z.ai: GLM 5V Turbo
1171.0
GPT-5.5
1150.0
Design Arena: agenticslides(html) vs top 8 models
Claude Fable 5
1252.0
Kimi K2.6
1252.0
Anthropic: Claude Opus 4.7
1242.0
Anthropic: Claude Opus 4.8
1230.0
Gemini 3.1 Pro Preview
1219.0
Z.ai: GLM 5.1
1204.0
Gemini 3.5 Flash
1162.0
GPT-5.5
1077.0
Design Arena: agenticslides(python-pptx) vs top 7 models
Anthropic: Claude Opus 4.7
1331.0
Anthropic: Claude Opus 4.8
1310.0
Gemini 3.5 Flash
1242.0
Z.ai: GLM 5.1
1240.0
Kimi K2.6
1186.0
Z.ai: GLM 5V Turbo
1183.0
GPT-5.5
1155.0
Design Arena: androidnative vs top 7 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
Design Arena: asciiart vs top 7 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
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-5.5
1292.0
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-5.5
1300.0
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-5.5
1151.0
Design Arena: gamedev vs top 7 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
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-5.5
1215.0
Design Arena: htmlslides vs top 8 models
Claude Fable 5
1260.0
Kimi K2.6
1246.0
Anthropic: Claude Opus 4.7
1239.0
Anthropic: Claude Opus 4.8
1222.0
Kimi K2.7 Code
1211.0
Z.ai: GLM 5.1
1205.0
Gemini 3.1 Pro Preview
1204.0
GPT-5.5
1087.0
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-5.5
1220.0
Design Arena: pptxslides vs top 7 models
Anthropic: Claude Opus 4.7
1333.0
Anthropic: Claude Opus 4.8
1306.0
Gemini 3.5 Flash
1244.0
Z.ai: GLM 5.1
1241.0
Kimi K2.6
1181.0
Z.ai: GLM 5V Turbo
1164.0
GPT-5.5
1157.0
Design Arena: python-pptxslides vs top 8 models
Anthropic: Claude Opus 4.7
1336.0
Anthropic: Claude Opus 4.8
1298.0
Z.ai: GLM 5.1
1258.0
Gemini 3.5 Flash
1247.0
Z.ai: GLM 5.2
1209.0
Kimi K2.7 Code
1190.0
Kimi K2.6
1180.0
GPT-5.5
1152.0
Design Arena: svg vs top 7 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
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-5.5
1297.0
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-5.5
1179.0
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-5.5
1287.0
FrontierMath vs top 7 models
GPT-5.6 Sol
89.0
GPT-5.6 Terra
84.9
GPT-5.6 Luna
78.6
GPT-5.5 Pro
39.6
GPT-5.4 Pro
38.0
GPT-5.5
35.4
GPT-5.4
27.1
GDPval vs top 6 models
GPT-5.5
84.9
GPT-5.4
83.0
GPT-5.5 Pro
82.3
GPT-5.4 Pro
82.0
Nemotron 3 Ultra 550B A55B
46.7
Step 3.7 Flash
45.8
GPQA Diamond vs top 7 models
Fugu
95.5
Fugu Ultra
95.5
GPT-5.6 Sol
94.6
GPT-5.4 Pro
94.4
Gemini 3.1 Pro Preview
94.3
Claude Opus 4.7
94.2
GPT-5.5
93.6
Humanity's Last Exam vs top 7 models
Claude Fable 5
64.5
Muse Spark 1.1
62.1
GPT-5.4 Pro
58.7
Claude Opus 4.8
57.9
GPT-5.5 Pro
57.2
Claude Opus 4.7
54.7
GPT-5.5
52.2