All modelsCalculate what your real prompts cost on GPT-5.5
GPT-5.5
OpenAI model, released 24 Apr 2026.
$5.00
per 1M input tokens
$30.00
per 1M output tokens
$0.5
per 1M cached-read tokens
Price history
Price stable since we started tracking (7 Jul 2026). History will chart here as soon as it moves.
Specifications
- Lab
- OpenAI
- Released
- 24 Apr 2026
- Context window
- 1.1M tokens
- Max output
- 128k tokens
- Input modalities
- file, image, text
- Output modalities
- text
- Knowledge cutoff
- 2025-12-01
- Open source
- No
Benchmarks
| Benchmark | Category | Score | As of |
|---|---|---|---|
| LMArena (Chatbot Arena) | coding | 1482.6 (1476.4–1488.7) | 12 Aug 2026 |
| LMArena (Chatbot Arena) | overall | 1466.1 (1462.1–1470) | 12 Aug 2026 |
LMArena (Chatbot Arena) data © their authors, CC-BY-4.0
Frequently asked questions
How much does GPT-5.5 cost?
GPT-5.5 costs $5.00 per 1M input tokens and $30.00 per 1M output tokens (list price, updated every 6 hours).
What is GPT-5.5's context window?
GPT-5.5 supports a 1.1M-token context window with up to 128k output tokens.