GPT-5.5
by OpenAI · paid · Last verified 2026-04-24
GPT-5.5 is OpenAI's advanced reasoning and instruction-following model positioned above GPT-5 in the product lineup. It delivers superior performance on complex multi-step reasoning, coding, and tool-use tasks, offering a balance of frontier capability with practical inference cost. Available through the OpenAI API with function calling and structured output support.
https://platform.openai.com/docs/models ↗D
D—Poor
Adoption: C+Quality: B+Freshness: ACitations: FEngagement: F
Specifications
- License
- Proprietary
- Pricing
- paid
- Capabilities
- Integrations
- Use Cases
- API Available
- No
- Modalities
- Tags
- gpt, reasoning, coding, tool-use, openai, frontier
- Added
- 2026-04-24
- Completeness
- 73%
Index Score
34Adoption
50
Quality
70
Freshness
80
Citations
0
Engagement
0