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Models/OpenAI

GPT-5.1

Sharper GPT-5 generation for coding, product work, and tool-assisted tasks

Source-linked gpt Closed weights Released 2025-11-13
API data Report
Input modalitiesT
Output modalitiesT
Input price$1.25/1M tokens
Output price$10/1M tokens
Context window400K
Max output128K
Overview

Capabilities and specifications

✓ Reasoning Yes
✓ Tool calling Yes
✓ Structured output Yes
✓ Attachments Yes
✓ Vision input Yes
× Open weights No
Creator
OpenAI
Model family
gpt
Knowledge cutoff
2024-09-30
License
Not documented
Release date
2025-11-13
Model ID
openai/gpt-5.1
Inference availability

Provider pricing and availability

Provider-specific identifiers, limits, and prices per million tokens.

Report a price
Providers offering GPT-5.1
ProviderProvider model IDContextInputOutputCache readCapabilitiesSource
AnyAPI openai/gpt-5.1 400K Not listed Not listed - ReasoningToolsJSON Docs
Snowflake Cortex openai-gpt-5.1 400K Not listed Not listed - ReasoningToolsJSON Docs
OpenCode Zen gpt-5.1 400K $1.07 $8.5 $0.107 ReasoningToolsJSON Docs
Poe openai/gpt-5.1 400K $1.1 $9 $0.11 ReasoningTools Docs
Requesty openai/gpt-5.1 400K $1.25 $10 $0.125 ReasoningToolsJSON Docs
ZenMux openai/gpt-5.1 400K $1.25 $10 $0.12 ReasoningTools Docs
OpenAI gpt-5.1 400K $1.25 $10 $0.125 ReasoningToolsJSON Docs
Merge Gateway openai/gpt-5.1 400K $1.25 $10 $0.125 ReasoningToolsJSON Docs
OrcaRouter openai/gpt-5.1 400K $1.25 $10 $0.125 ReasoningToolsJSON Docs
NEAR AI Cloud openai/gpt-5.1 400K $1.25 $10 $0.125 ReasoningToolsJSON Docs
Pioneer gpt-5.1 400K $1.25 $10 $0.125 ReasoningToolsJSON Docs
LLM Gateway gpt-5.1 400K $1.25 $10 $0.125 ReasoningToolsJSON Docs
Abacus gpt-5.1 400K $1.25 $10 $0.125 ReasoningToolsJSON Docs
Cloudflare AI Gateway openai/gpt-5.1 400K $1.25 $10 $0.13 ReasoningTools Docs
Azure gpt-5.1 400K $1.25 $10 $0.125 ReasoningToolsJSON Docs
Perplexity Agent openai/gpt-5.1 400K $1.25 $10 $0.125 ReasoningTools Docs
Kilo Gateway openai/gpt-5.1 400K $1.25 $10 $0.125 ReasoningTools Docs
OpenRouter openai/gpt-5.1 400K $1.25 $10 $0.125 ReasoningToolsJSON Docs
Databricks databricks-gpt-5-1 400K $1.25 $10 $0.125 ReasoningToolsJSON Docs
Azure Cognitive Services gpt-5.1 400K $1.25 $10 $0.125 ReasoningToolsJSON Docs
AIHubMix gpt-5.1 400K $1.25 $10 $0.13 ReasoningToolsJSON Docs
NanoGPT openai/gpt-5.1 400K $1.25 $10 - ReasoningToolsJSON Docs
Neon gpt-5-1 400K $1.25 $10 $0.125 ReasoningToolsJSON Docs

Capability badges appear only when the provider catalog explicitly lists support.

Serving quality

Performance and reliability

Observed serving measurements stay separate from model specifications and are never estimated from price or model size.

Throughput Not reported

Generation speed; higher is faster.

Latency / TTFT Not reported

Time until the first output token arrives.

Uptime Not reported

Successful requests over a measured period.

Performance varies by inference provider, region, and load. Provider-level measurements appear only when a source reports them.

Published evaluations

Benchmarks

Raw results remain attached to their original source and version.

Benchmark registry
Agentic Index - Unversioned - indexTop 8 reported models
Claude Opus 5
55.3
GPT-5.6 Sol
54.0
Anthropic: Claude Fable 5 (batch)
52.8
Claude Fable 5
52.8
Kimi K3
50.1
GPT-5.6 Terra
47.4
Anthropic: Claude Opus 4.8 (batch)
47.2
GPT-5.1
21.0
Coding Index - Unversioned - indexTop 8 reported models
Claude Opus 5
78.0
GPT-5.6 Sol
77.4
GPT-5.6 Terra
76.7
Anthropic: Claude Fable 5 (batch)
76.5
Claude Fable 5
76.5
Kimi K3
76.2
OpenAI: GPT-5.5 (batch)
74.9
GPT-5.1
49.4
Design Arena: 3d - Unversioned - eloTop 8 reported models
Kimi K3
1456.0
Claude Opus 5
1384.0
Anthropic: Claude Fable 5 (batch)
1373.0
Claude Fable 5
1373.0
Z.ai: GLM 5.2
1366.0
Z.ai: GLM 5.1
1336.0
Anthropic: Claude Opus 4.6 (batch)
1332.0
GPT-5.1
1119.0
Design Arena: asciiart - Unversioned - eloTop 8 reported models
Anthropic: Claude Fable 5 (batch)
1364.0
Claude Fable 5
1364.0
Anthropic: Claude Opus 4.7 (batch)
1324.0
Anthropic: Claude Opus 4.7
1324.0
Muse Spark 1.1
1322.0
Google: Gemini 3.1 Pro Preview (batch)
1309.0
Gemini 3.1 Pro Preview
1309.0
GPT-5.1
1156.0
Design Arena: codecategories - Unversioned - eloTop 8 reported models
Kimi K3
1418.0
Claude Opus 5
1358.0
Z.ai: GLM 5.2
1346.0
Anthropic: Claude Fable 5 (batch)
1340.0
Claude Fable 5
1340.0
Anthropic: Claude Opus 4.6 (batch)
1324.0
Anthropic: Claude Opus 4.6
1324.0
GPT-5.1
1202.0
Design Arena: dataviz - Unversioned - eloTop 8 reported models
Kimi K3
1382.0
Claude Opus 5
1378.0
Z.ai: GLM 5.1
1366.0
Google: Gemini 3.6 Flash (batch)
1350.0
Gemini 3.6 Flash
1350.0
Anthropic: Claude Fable 5 (batch)
1349.0
Claude Fable 5
1349.0
GPT-5.1
1234.0
Design Arena: gamedev - Unversioned - eloTop 8 reported models
Anthropic: Claude Fable 5 (batch)
1393.0
Claude Fable 5
1393.0
Z.ai: GLM 5.2
1358.0
Anthropic: Claude Sonnet 5 (batch)
1352.0
Claude Sonnet 5
1352.0
OpenAI: GPT-5.5 (batch)
1345.0
GPT-5.5
1345.0
GPT-5.1
1235.0
Design Arena: mobileapps - Unversioned - eloTop 8 reported models
Anthropic: Claude Opus 4.6 (batch)
1275.0
Anthropic: Claude Opus 4.6
1275.0
Anthropic: Claude Opus 4.8 (batch)
1272.0
Anthropic: Claude Opus 4.8
1272.0
Anthropic: Claude Sonnet 4.6
1267.0
Anthropic: Claude Fable 5 (batch)
1265.0
Claude Fable 5
1265.0
GPT-5.1
1118.0
Design Arena: svg - Unversioned - eloTop 8 reported models
Anthropic: Claude Fable 5 (batch)
1351.0
Claude Fable 5
1351.0
Google: Gemini 3.1 Pro Preview (batch)
1335.0
Gemini 3.1 Pro Preview
1335.0
Google: Gemini 3.5 Flash (batch)
1296.0
Gemini 3.5 Flash
1296.0
Anthropic: Claude Opus 4.6 (batch)
1276.0
GPT-5.1
1198.0
Design Arena: uicomponent - Unversioned - eloTop 8 reported models
Kimi K3
1413.0
Claude Opus 5
1406.0
Anthropic: Claude Fable 5 (batch)
1350.0
Claude Fable 5
1350.0
Anthropic: Claude Opus 4.7 (batch)
1339.0
Anthropic: Claude Opus 4.7
1339.0
Z.ai: GLM 5.2
1334.0
GPT-5.1
1203.0
Design Arena: webapps - Unversioned - eloTop 8 reported models
Kimi K3
1329.0
Anthropic: Claude Fable 5 (batch)
1305.0
Claude Fable 5
1305.0
Anthropic: Claude Sonnet 5 (batch)
1304.0
Claude Sonnet 5
1304.0
Anthropic: Claude Opus 4.7 (batch)
1303.0
Anthropic: Claude Opus 4.7
1303.0
GPT-5.1
1075.0
Design Arena: website - Unversioned - eloTop 8 reported models
Kimi K3
1375.0
Claude Opus 5
1343.0
Z.ai: GLM 5.2
1340.0
Anthropic: Claude Fable 5 (batch)
1323.0
Claude Fable 5
1323.0
xAI: Grok 4.5
1323.0
Google: Gemini 3.6 Flash (batch)
1322.0
GPT-5.1
1212.0
Intelligence Index - Unversioned - indexTop 8 reported models
Claude Opus 5
60.7
Anthropic: Claude Fable 5 (batch)
59.9
Claude Fable 5
59.9
GPT-5.6 Sol
58.9
Kimi K3
57.1
Anthropic: Claude Opus 4.8 (batch)
55.7
Anthropic: Claude Opus 4.8
55.7
GPT-5.1
36.9
Catalog activity

Recent record changes

Detected changes from successful source imports.

Full change log
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This record has not changed in the retained import history.

Public API

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Fetch the complete source-linked model record without an API key.

API documentation
Endpoint
GET https://www.modelbench.lol/api/v1/models/openai/gpt-5.1
curl
curl "https://www.modelbench.lol/api/v1/models/openai/gpt-5.1"