GPT-5.1
About this model
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 to allocate computation dynamically, responding quickly to simple queries while spending more depth on complex tasks. The model produces clearer, more grounded explanations with reduced jargon, making it easier to follow even on technical or multi-step problems. Built for broad task coverage, GPT-5.1 delivers consistent gains across math, coding, and structured analysis workloads, with more coherent long-form answers and improved tool-use reliability. It also features refined conversational alignment, enabling warmer, more intuitive responses without compromising precision. GPT-5.1 serves as the primary full-capability successor to GPT-5
Performance Tier
GPT-5.1 is a balanced model from GPT : strong performance at a reasonable price.
Strong cost-performance ratio. Reliable for most professional use cases without premium pricing.
Pricing
This model is included in Elosia plans| Type | per 1M tokens |
|---|---|
| Input (prompt) | $1.25 |
| Output (completion) | $10.00 |
| Cache read | $0.125 |
Capabilities
Benchmarks
Recommended Use Cases
Strengths
- Strong all-around performance across reasoning and coding
- Excellent mathematical reasoning (MATH-500 90.8%)
- Good balance of capability and speed
- Large context window for document analysis
Limitations
- Surpassed by GPT-5.2 on most benchmarks
- Higher cost than GPT-5 Mini for simple tasks
Resources
This model may use your data for training