GPT-5.5 — reviews, specs & pricing
Previous-generation OpenAI flagship, still supported. $5/$30 per 1M tokens (short context), $10/$45 long context.
Summary
GPT-5.5 represents OpenAI's next-generation frontier model, specifically optimized for highly complex reasoning, advanced coding tasks, and multi-step analytical workflows. Operating primarily across chat and code modalities, it delivers unprecedented depth in problem-solving and logical synthesis. It serves as the go-to engine for developers and researchers requiring rigorous logical validation and sophisticated instruction-following capabilities.
Sample use case
A software engineering team at a financial institution can deploy GPT-5.5 to automate the refactoring and security auditing of legacy COBOL databases into modern, secure Python microservices. The model acts as an expert co-developer, translating highly complex business logic, identifying hidden edge-case vulnerabilities, and draft-testing the migration in real-time, drastically reducing transit times and human oversight errors.
Specifications
- Provider: openai
- License: closed
- Context: 400k tokens
- Input price: $5/M tok
- Output price: $30/M tok
Pros
- Unmatched coding proficiency and syntax generation
- Superior multi-step logical reasoning capabilities
- Extremely precise instruction-following
- Deep analytical comprehension of legacy codebases
Cons
- High computational latency during complex reasoning
- Expensive API usage costs for large-scale operations
- Limited mostly to text and code modalities
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