GPT-5.6 API pricing
Standard tier, 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 for GPT-5.6. 2 of the models nearest it in price are cheaper on a blended basis.
Against the models nearest in price
Standard tiers, 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 Opus 5.5 | Anthropic | $4.00 | $20.00 | 1,000,000 | $8.00 | ↗ |
| GPT-5.6 Sol | OpenAI | $4.00 | $20.00 | 922,000 | $8.00 | ↗ |
| 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 | ↗ |
| 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 | ↗ |
Prices 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 28 Oct 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 on the standard tier.
What is the context window for GPT-5.6?
922,000 tokens of input, with up to 128,000 tokens of output.
Claude Opus 5.5 · GPT-5.6 Sol · Claude Sonnet 4.5 · Claude Sonnet 4.6 · Claude Opus 4.5 · All OpenAI models · Cost calculator