gpt-5.5 API pricing
Blended at 3:1 input to output: $11.25 per million tokens.
OpenAI charges $5.00 per million input tokens and $30.00 per million output tokens. 8 of the models nearest it in price are cheaper on a blended basis.
Against the models nearest in price
Blended at a 3:1 input to output ratio.
| Source | ||||||
|---|---|---|---|---|---|---|
| gpt-5.5 This model | OpenAI | $5.00 | $30.00 | 1,050,000 | $11.25 | ↗ |
| claude-opus-4-5 | Anthropic | $5.00 | $25.00 | 200,000 | $10.00 | ↗ |
| claude-opus-4-6 | Anthropic | $5.00 | $25.00 | 1,000,000 | $10.00 | ↗ |
| claude-opus-4-7 | Anthropic | $5.00 | $25.00 | 1,000,000 | $10.00 | ↗ |
| claude-opus-4-8 | Anthropic | $5.00 | $25.00 | 1,000,000 | $10.00 | ↗ |
| claude-opus-5 | Anthropic | $5.00 | $25.00 | 1,000,000 | $10.00 | ↗ |
| claude-opus-4.5 | OpenRouter | $5.00 | $25.00 | 200,000 | $10.00 | ↗ |
| claude-opus-4.6 | OpenRouter | $5.00 | $25.00 | 1,000,000 | $10.00 | ↗ |
| claude-opus-4.7 | OpenRouter | $5.00 | $25.00 | 1,000,000 | $10.00 | ↗ |
Last checked . Methodology
Questions
How much does gpt-5.5 cost per million tokens?
$5.00 per million input tokens and $30.00 per million output tokens, with cached input at $0.500. At a 3:1 input to output mix that blends to $11.25. Checked 12 Sept 2026.
What would gpt-5.5 cost for a real workload?
A thousand requests a day at 2,000 input and 600 output tokens each comes to $840.00 a month.
What is the context window for gpt-5.5?
1,050,000 tokens of input, with up to 128,000 tokens of output.
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