GPT-5.6 Sol API pricing
GPT-5.6 Sol costs $4 per million input tokens and $20 per million output tokens. A typical chatbot request (about 1,500 input + 400 output tokens) costs $0.01, or $14.00 per 1,000 requests.
0 characters0 words0 tokens (GPT o200k)
| Model | Per month |
|---|---|
| GPT-5.6 Sol |
≈ = estimated token count: only OpenAI publishes its tokenizer. Claude counts use Anthropic’s published ratios; use the count_tokens API for an exact number.
GPT-5.6 Sol price per million tokens
USD, OpenAI standard tier. Prices checked on October 28, 2026.
| Token type | Price per 1M | With Batch API |
|---|---|---|
| Input | $4 | $2 |
| Cached input | $0.4 | $0.2 |
| Output | $20 | $10 |
| Input, prompts above 272K | $8 | $4 |
| Cached input, above 272K | $0.8 | $0.4 |
| Output, prompts above 272K | $30 | $15 |
Above 272K prompt tokens the higher rate applies to the whole request.
Note: Promotional price, available at least through November 21, 2026.
Model ID: gpt-5.6-sol · Source: developers.openai.com
What a GPT-5.6 Sol request costs
| Request | Per request | Per 1,000 |
|---|---|---|
| Short chat reply 500 input + 200 output tokens | $0.0060 | $6.00 |
| Chatbot turn with context 1,500 input + 400 output tokens | $0.01 | $14.00 |
| Document Q&A (RAG) 8,000 input + 500 output tokens | $0.04 | $42.00 |
| Long-document summary 150,000 input + 2,000 output tokens | $0.64 | $640 |
Token counts are measured with GPT's o200k tokenizer and converted for GPT-5.6 Sol (see below). No caching or batch discount.
Similarly priced models
| Model | Chatbot request | vs GPT-5.6 Sol |
|---|---|---|
| Claude Sonnet 5.5 Anthropic | $0.0083 | −41% |
| GPT-5.4 OpenAI | $0.0097 | −30% |
| Claude Sonnet 4.6 Anthropic | $0.01 | −22% |
| Claude Opus 5.5 Anthropic | $0.02 | +18% |
| GPT-5.5 OpenAI | $0.02 | +39% |
| Claude Opus 5 Anthropic | $0.02 | +48% |
Frequently asked questions
How much does the GPT-5.6 Sol API cost?
GPT-5.6 Sol costs $4 per million input tokens and $20 per million output tokens on OpenAI's standard tier, rising to $8 / $30 for prompts above 272K tokens. Prices checked on October 28, 2026.
How much does one GPT-5.6 Sol request cost?
A typical chatbot request with about 1,500 input and 400 output tokens costs about $0.01, or $14.00 per 1,000 requests. Paste your own prompt into the calculator on this page for an exact estimate.
Does GPT-5.6 Sol support prompt caching?
Yes. Cached input costs $0.4 per million tokens, 90% less than regular input.
Does GPT-5.6 Sol have a Batch API discount?
Yes: 50% off for requests sent through the Batch API, which may take up to 24 hours. That makes it $2 / $10 per million input / output tokens.
How are GPT-5.6 Sol tokens counted?
GPT-5.6 Sol's tokenizer is not published; we use the o200k count, which is close for newer OpenAI models.