GPT-5.5 API pricing
GPT-5.5 costs $5 per million input tokens and $30 per million output tokens. A typical chatbot request (about 1,500 input + 400 output tokens) costs $0.02, or $19.50 per 1,000 requests.
0 characters0 words0 tokens (GPT o200k)
| Model | Per month |
|---|---|
| GPT-5.5 |
≈ = 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-5.5 price per million tokens
USD, OpenAI standard tier. Prices checked on October 28, 2026.
| Token type | Price per 1M | With Batch API |
|---|---|---|
| Input | $5 | $2.5 |
| Cached input | $0.5 | $0.25 |
| Output | $30 | $15 |
Note: Price for prompts up to 272K tokens; longer prompts cost more.
Model ID: gpt-5.5 · Source: developers.openai.com
What a GPT-5.5 request costs
| Request | Per request | Per 1,000 |
|---|---|---|
| Short chat reply 500 input + 200 output tokens | $0.0085 | $8.50 |
| Chatbot turn with context 1,500 input + 400 output tokens | $0.02 | $19.50 |
| Document Q&A (RAG) 8,000 input + 500 output tokens | $0.06 | $55.00 |
| Long-document summary 150,000 input + 2,000 output tokens | $0.81 | $810 |
Token counts are measured with GPT's o200k tokenizer and converted for GPT-5.5 (see below). No caching or batch discount.
Similarly priced models
| Model | Chatbot request | vs GPT-5.5 |
|---|---|---|
| GPT-5.4 OpenAI | $0.0097 | −50% |
| Claude Sonnet 4.6 Anthropic | $0.01 | −44% |
| GPT-5.6 Sol OpenAI | $0.01 | −28% |
| Claude Opus 5.5 Anthropic | $0.02 | −15% |
| Claude Opus 5 Anthropic | $0.02 | +6% |
| GPT-6 Astra OpenAI | $0.04 | +79% |
Frequently asked questions
How much does the GPT-5.5 API cost?
GPT-5.5 costs $5 per million input tokens and $30 per million output tokens on OpenAI's standard tier. Prices checked on October 28, 2026.
How much does one GPT-5.5 request cost?
A typical chatbot request with about 1,500 input and 400 output tokens costs about $0.02, or $19.50 per 1,000 requests. Paste your own prompt into the calculator on this page for an exact estimate.
Does GPT-5.5 support prompt caching?
Yes. Cached input costs $0.5 per million tokens, 90% less than regular input.
Does GPT-5.5 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 $2.5 / $15 per million input / output tokens.
How are GPT-5.5 tokens counted?
GPT-5.5's tokenizer is not published; we use the o200k count, which is close for newer OpenAI models.