OpenAI: GPT-5.1
Analysis Summary
GPT-5.1 is OpenAI's mid-generation model with an intelligence index of 20.4, vision, tool use, function calling, and a 400K token context window. MMLU Pro at 0.801 and GPQA at 0.643 show strong general knowledge, while LiveCodeBench at 0.494 and TerminalBench Hard at 0.227 confirm useful but not frontier coding capability. IFBench at 0.432 and LCR at 0.44 support structured content and long-document tasks.
For businesses, GPT-5.1 suits a wide range of workloads: client-facing content generation, document analysis, agentic task automation, and code assistance. The combination of vision, tool use, and large context makes it a versatile single-model solution for teams wanting to consolidate workflows. OpenAI's ecosystem, API reliability, and enterprise support are additional practical advantages.
At $1.25 input and $10.00 output per million tokens, output pricing is high. Teams with high-volume output requirements should weigh cost carefully, but for quality-sensitive, mixed-modality business tasks, GPT-5.1 remains a strong and well-supported choice.
Assessed June 30, 2026
Editorial notes
GPT-5.1 from OpenAI combines vision, tool use, function calling, and a 400K context window with reliable instruction following, suited to a broad range of business workflows from content to agentic tasks.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
How OpenAI: GPT-5.1 compares
OpenAI: GPT-5.1 ranks #46 of 385 AI models we track for overall intelligence, #35 of 139 for coding, #48 of 293 for agentic tasks. Its 400K-token context window is larger than 85% of the models we list. At $1.25 per million input tokens it is cheaper than 21% of comparable models.
About OpenAI: GPT-5.1
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
Performance Indices
Source: Artificial Analysis
Benchmark Scores
Intelligence
Technical
Content
Benchmark data from Artificial Analysis and Hugging Face
How does OpenAI: GPT-5.1 stack up?
Compare side-by-side with other professional models.
Model Information
| OpenRouter ID |
openai/gpt-5.1
|
| Provider | openai |
| Release Date | November 13, 2025 |
| Context Length | 400,000 tokens |
| Max Completion | 128,000 tokens |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $1.25 | $0.001250 |
| Output | $10.00 | $0.010000 |
Live Performance
Live endpoint metrics, refreshed every 30 minutes.
Leaderboard Categories
External Resources
Frequently asked questions about OpenAI: GPT-5.1
How much does OpenAI: GPT-5.1 cost?
OpenAI: GPT-5.1 costs $1.25 per million input tokens and $10.00 per million output tokens.
What is the context window of OpenAI: GPT-5.1?
OpenAI: GPT-5.1 has a context window of 400,000 tokens (400K).
Is OpenAI: GPT-5.1 good for coding?
On our coding benchmark index, OpenAI: GPT-5.1 ranks #35 of 139 models, placing it in the top quartile of the field for code generation and debugging.
What can OpenAI: GPT-5.1 do?
OpenAI: GPT-5.1 supports image/vision input, tool use, and function calling.
Who created OpenAI: GPT-5.1?
OpenAI: GPT-5.1 is developed by OpenAI and was released on November 13, 2025.
