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OpenAI: GPT-5.5 API pricing
Last updated
- Input / 1M tokens
- $5.00
- Output / 1M tokens
- $30.00
- Blended / 1M
- $11.25
- 3:1 input:output
- Context window
- 1.1M
- tokens
- Arena Elo
- 1200
Context window
How much text fits in a single request.
1,050,000 tokens, roughly 787.5K words or 1,575 pages of English text.
Estimate assumes ~0.75 words per token and 500 words per page. Input and output share this limit.
Price history
USD per 1M tokens at each recorded price change.
| Date | Input / 1M | Output / 1M | Blended / 1M | Change |
|---|---|---|---|---|
| $5.00 | $30.00 | $11.25 | Launch |
Changelog
Notable updates to OpenAI: GPT-5.5.
OpenAI: GPT-5.5 is now tracked with input at $5 and output at $30 per 1M tokens, a 1,050,000-token context window, and an Elo score of 1200.
Summaries are AI-generated from tracked data changes.
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