gpt-5.6 API pricing
Blended at 3:1 input to output: $8.00 per million tokens.
OpenAI charges $4.00 per million input tokens and $20.00 per million output tokens. 6 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-5.6 This model | OpenAI | $4.00 | $20.00 | 922,000 | $8.00 | ↗ |
| claude-sonnet-4 | OpenRouter | $3.00 | $15.00 | 1,000,000 | $6.00 | ↗ |
| claude-sonnet-4-5 | Anthropic | $3.00 | $15.00 | 200,000 | $6.00 | ↗ |
| claude-sonnet-4-6 | Anthropic | $3.00 | $15.00 | 1,000,000 | $6.00 | ↗ |
| mistral-large-2402 | Mistral AI | $4.00 | $12.00 | 32,000 | $6.00 | ↗ |
| claude-sonnet-4.5 | OpenRouter | $3.00 | $15.00 | 200,000 | $6.00 | ↗ |
| claude-sonnet-4.6 | OpenRouter | $3.00 | $15.00 | 1,000,000 | $6.00 | ↗ |
| 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 | ↗ |
Last checked . Methodology
Questions
How much does gpt-5.6 cost per million tokens?
$4.00 per million input tokens and $20.00 per million output tokens, with cached input at $0.400. At a 3:1 input to output mix that blends to $8.00. Checked 12 Sept 2026.
What would gpt-5.6 cost for a real workload?
A thousand requests a day at 2,000 input and 600 output tokens each comes to $600.00 a month.
What is the context window for gpt-5.6?
922,000 tokens of input, with up to 128,000 tokens of output.
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