Verified 2026-05-15 · sourced from OpenAI
GPT-5.5 Pro Token Calculator, Pricing & 100K/1M Cost
Check OpenAI GPT-5.5 Pro pricing, estimate 100K and 1M token cost, and size a real API budget before you send a single request. Standard pricing is $30.00 per million input tokens and $180.00 per million output tokens with a 1M token context window.
Quick answer: GPT-5.5 Pro pricing per 1M tokens is $30.00 input and $180.00 output. Context window: 1,000,000 tokens.
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Context window
1,000,000 tokens
Input price
$30.00 / 1M
Output price
$180.00 / 1M
Cached input
Not published
Pricing modes and thresholds
Long-context pricing starts above 200,000 input tokens.
Usage scenarios
Compare standard and cached pricing (where available) across common workloads.
| Scenario | Tokens in | Tokens out | Total tokens | Standard cost |
|---|---|---|---|---|
Quick chat reply Single user question with a short assistant answer | 650 | 220 | 870 | $0.0591 |
Coding assistant session Multi-turn pair programming exchange (≈6 turns) | 2,600 | 1,400 | 4,000 | $0.330 |
Knowledge base response Retrieval-augmented answer referencing multiple passages | 12,000 | 3,000 | 15,000 | $0.900 |
Near-max context run Large document processing approaching the 1M token limit | 880,000 | 120,000 | 1,000,000 | $85.20 |
Daily & monthly budgeting
Translate usage into predictable operating expenses across popular deployment sizes.
| Profile | Requests/day | Tokens/day | Daily cost | Monthly cost |
|---|---|---|---|---|
| Team pilot | 25 | 75,000 | $6.00 | $180.00 |
| Product launch | 100 | 500,000 | $61.50 | $1845.00 |
| Enterprise scale | 500 | 3,000,000 | $390.00 | $11700.00 |
Pricing notes
- OpenAI pricing lists GPT-5.5 Pro at $30 input and $180 output per 1M tokens for short context.
- Long-context pricing applies above 200K prompt tokens at $60 input and $270 output per 1M tokens.
- OpenAI does not list cached-input pricing for GPT-5.5 Pro.
Frequently asked questions
How much does GPT-5.5 Pro cost per 1,000 tokens?
At the published rates of $30.00 per million input tokens and $180.00 per million output tokens, a typical 1,000 token request (≈70% input, 30% output) costs about $0.0750.
What is the context window for GPT-5.5 Pro?
GPT-5.5 Pro supports up to 1,000,000 tokens (1M), allowing large prompts and retrieval-augmented payloads in a single call.
How fresh is the GPT-5.5 Pro pricing data?
Pricing is sourced from https://developers.openai.com/api/docs/pricing and was last verified on 2026-05-15. The calculator updates automatically when models.json is refreshed.
What is GPT-5.5 Pro API pricing per 1M tokens?
OpenAI announced GPT-5.5 Pro API pricing at $30.00 per million input tokens and $180.00 per million output tokens. Cached-input pricing has not been published for GPT-5.5 Pro.
Is GPT-5.5 Pro available in the API?
OpenAI says GPT-5.5 Pro is rolling out in ChatGPT for Pro, Business, and Enterprise users first, with API access planned soon.