GPT-5.5 API pricing
As of 5 August 2026, GPT-5.5 costs $5.00 per 1M input tokens and $30.00 per 1M output tokens, and scores 80.6% on coding benchmarks (best of Aider polyglot and SWE-bench Verified).
Prices updated 5 August 2026
GPT-5.5 price
USD per 1M tokens.
| Provider | Input / 1M | Output / 1M | Context |
|---|---|---|---|
| OpenAI | $5.00 | $30.00 | 1.1M |
Coding: 80.6%Reasoning: 90.7%Math: 100.0%
Coding via Aider polyglot & SWE-bench Verified; reasoning & math via Epoch AI.
Cheaper alternatives to GPT-5.5
Models with an equal-or-better coding score at a lower output price. StackSpend surfaces swaps like these against your actual usage.
- How much does the GPT-5.5 API cost?
- As of 5 August 2026, GPT-5.5 costs $5.00 per 1M input tokens and $30.00 per 1M output tokens, and scores 80.6% on coding benchmarks (best of Aider polyglot and SWE-bench Verified).
- Is there a cheaper model as good as GPT-5.5 for coding?
- Yes — claude-opus-4-7 (Anthropic) scores 83.5% on coding at $25.00 per 1M output tokens, below GPT-5.5's $30.00.
Know what you're really spending on GPT-5.5.
StackSpend connects read-only to your AI providers, normalises every model into one daily signal, and flags cheaper equal-quality swaps from this same dataset.