GPT-5.1
by OpenAItext+image+file->text5 endpoints
Neura Intelligence Index
76.3/ 100
Rank
#38—
Confidence
mediumBenchmarks
5(13% coverage)
Overview
GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...
Capabilities
Text generation
Image understanding
Tool use / Function calling
Structured output
Extended reasoning
Prompt caching
Modalities
Input
ImageTextFile
Output
Text
Technical Specifications
Context Window
400K tokens
Max Output
128K tokens
Tokenizer
GPT
Content Moderation
Enabled
Uptime (24h)
9882.1%
Country
🇺🇸US
Release Date
Supported Parameters
include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools
Benchmark Performance
coding
| Benchmark | Score | Source |
|---|---|---|
| SWE-bench Verified | 76.3 | verified |
math
| Benchmark | Score | Source |
|---|---|---|
| AIME 2025 | 94 | verified |
| FrontierMath | 26.7 | verified |
reasoning
Performance Over Time
Pricing
Per 1M tokens
Input$1.25
Output$10.00
Cache read$0.13