GPT-5.1
Model
by OpenAI
Vendor:OpenAI
│Model Size:Unknown
│Context Window:400,000 tokens
│Max Output:128,000 tokens
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Artificial Analysis
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OpenRouter
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Specifications
Model Size
Unknown
Total Context
400.0K
Max Output
128.0K
Pricing
GlobalUSD
Input $1.25 / 1M tokens
Output $10.00 / 1M tokens
Cache read $0.125 / 1M tokens
Performance Benchmarks
SWE-bench
66.0%
Real-world software engineering tasks
Terminal Bench
47.6%
Command-line interface proficiency
MMMU
76.0%
Multimodal understanding