GPT-5.6 Sol API pricing — cost per million tokens
OpenAI's GPT-5.6 Sol costs $5 per million input tokens and $30 per million output tokens on the standard API tier (verified 2026-07-23). Note: Flagship tier of the GPT-5.6 family; generally available since 2026-07-09. Compare it in the full pricing table or price your own prompts in the token cost calculator.
GPT-5.6 Sol price per million tokens
| direction | $ / Mtok | $ / 1K tokens |
|---|---|---|
| input (prompt) | $5 | $0.005 |
| output (completion) | $30 | $0.03 |
What real requests cost on GPT-5.6 Sol
| workload | input | output | total |
|---|---|---|---|
| Chat message (1K in / 500 out) | $0.005 | $0.015 | $0.02 |
| Long document (100K in / 2K out) | $0.50 | $0.06 | $0.56 |
| Agent session (500K in / 50K out) | $2.50 | $1.50 | $4.00 |
How GPT-5.6 Sol pricing compares
On the same chat-message workload, GPT-5.6 Sol costs 71× more than DeepSeek V4 Flash (the cheapest tracked model) — capability, latency and context limits are the other side of that trade. Output tokens dominate long generations: at $30/Mtok, a 50K-token agent transcript costs $1.50 in output alone. Official rate card: OpenAI pricing.
Related: GPT-5.6 Terra pricing · GPT-5.6 Luna pricing · GPT-5.5 pricing · release timeline
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