Released04/2026
Speed0 tokens/s
Time to first token0.00s
Input price$5/1M
Output price$30/1M
Rankings
Review
GPT-5.5 is a solid choice for developers and analysts needing strong reasoning and high-quality coding. However, it is not an ideal model for agent automation tasks or broad general-purpose chat.
Strengths
- Very strong logical reasoning, performing well on complex analytical problems and multi-step deduction
- Competitive coding performance, ranked #5 on AIM for coding and debugging tasks
- Decent general conversation and Q&A, well-suited for everyday dialogue
Weaknesses
- AI Agent (autonomous) capabilities are a notable weakness, ranked #16—ineffective for complex automation tasks
- General conversation ranks #6, lower than its technical performance—less optimized for general-purpose chat
Use cases
Solving logic problems, scientific reasoning, and complex data analysisWriting code, refactoring, debugging, and code review for software development projectsQ&A, information retrieval, and general concept explanations
Guides & videos
Go to chat.openai.com, log in, and select GPT-5.5 from the model picker (Plus users: 160 messages/3 hours). This model is optimized for coding, online research, data analysis, document generation, and multi-step tasks. You can use Codex Agents to automate complex workflows or integrate it into applications via the OpenAI API using your API key.