gpt-5.5-pro API pricing
Blended at 3:1 input to output: $67.50 per million tokens.
OpenRouter charges $30.00 per million input tokens and $180.00 per million output tokens. 7 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-pro This model | OpenRouter | $30.00 | $180.00 | 1,050,000 | $67.50 | ↗ |
| gpt-5.4-pro | OpenRouter | $30.00 | $180.00 | 1,050,000 | $67.50 | ↗ |
| gpt-5.2-pro | OpenRouter | $21.00 | $168.00 | 272,000 | $57.75 | ↗ |
| gpt-5-pro | OpenRouter | $15.00 | $120.00 | 400,000 | $41.25 | ↗ |
| gpt-4 | OpenAI | $30.00 | $60.00 | 8,192 | $37.50 | ↗ |
| gpt-4-0314 | OpenAI | $30.00 | $60.00 | 8,192 | $37.50 | ↗ |
| gpt-4-0613 | OpenAI | $30.00 | $60.00 | 8,192 | $37.50 | ↗ |
| o3-pro | OpenRouter | $20.00 | $80.00 | 200,000 | $35.00 | ↗ |
| claude-opus-4-1 | Anthropic | $15.00 | $75.00 | 200,000 | $30.00 | ↗ |
Last checked . Methodology
Questions
How much does gpt-5.5-pro cost per million tokens?
$30.00 per million input tokens and $180.00 per million output tokens. At a 3:1 input to output mix that blends to $67.50. Checked 12 Sept 2026.
What would gpt-5.5-pro cost for a real workload?
A thousand requests a day at 2,000 input and 600 output tokens each comes to $5,040.00 a month.
What is the context window for gpt-5.5-pro?
1,050,000 tokens of input, with up to 128,000 tokens of output.
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