Verified 2026-05-15 · sourced from OpenAI
GPT-5.5 Token Calculator, Pricing & 100K/1M Cost
Check OpenAI GPT-5.5 pricing, estimate 100K and 1M token cost, and size a real API budget before you send a single request. Standard pricing is $5.00 per million input tokens and $30.00 per million output tokens with a 1M token context window.
Quick answer: GPT-5.5 pricing per 1M tokens is $5.00 input and $30.00 output. Context window: 1,000,000 tokens · Cached input: $0.500 / 1M.
Best for searches like GPT-5.5 token calculator, GPT-5.5 pricing, GPT-5.5 100K tokens cost, GPT-5.5 1M token cost.
Pick the route that matches what you searched for
Some visitors want a fast GPT-5.5 API cost estimate, others want a direct 100K or 1M token budget, and some are already comparing alternatives. These shortcuts remove the extra click.
Estimate a single request or prompt budget right now.
Jump straight to the most common budgeting checkpoint.
Use this when you are sizing production traffic or a monthly plan.
Open the closest head-to-head comparison instead of researching from scratch.
Context window
1,000,000 tokens
Input price
$5.00 / 1M
Output price
$30.00 / 1M
Cached input
$0.500 / 1M
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 | Cached cost |
|---|---|---|---|---|---|
Quick chat reply Single user question with a short assistant answer | 650 | 220 | 870 | $0.0098 | $0.0069 |
Coding assistant session Multi-turn pair programming exchange (≈6 turns) | 2,600 | 1,400 | 4,000 | $0.0550 | $0.0433 |
Knowledge base response Retrieval-augmented answer referencing multiple passages | 12,000 | 3,000 | 15,000 | $0.150 | $0.0960 |
Near-max context run Large document processing approaching the 1M token limit | 880,000 | 120,000 | 1,000,000 | $14.20 | $6.28 |
Daily & monthly budgeting
Translate usage into predictable operating expenses across popular deployment sizes.
| Profile | Requests/day | Tokens/day | Daily cost | Monthly cost | Cached daily | Cached monthly |
|---|---|---|---|---|---|---|
| Team pilot | 25 | 75,000 | $1.00 | $30.00 | $0.775 | $23.25 |
| Product launch | 100 | 500,000 | $10.25 | $307.50 | $7.10 | $213.00 |
| Enterprise scale | 500 | 3,000,000 | $65.00 | $1950.00 | $47.00 | $1410.00 |
Pricing notes
- OpenAI pricing lists GPT-5.5 in the flagship models table.
- Standard short-context pricing is $5 input, $0.50 cached input, and $30 output per 1M tokens.
- Long-context pricing applies above 200K prompt tokens at $10 input, $1 cached input, and $45 output per 1M tokens.
Frequently asked questions
How much does GPT-5.5 cost per 1,000 tokens?
At the published rates of $5.00 per million input tokens and $30.00 per million output tokens, a typical 1,000 token request (≈70% input, 30% output) costs about $0.0125.
Does GPT-5.5 offer cached input discounts?
GPT-5.5 drops input costs to $0.500 per million cached tokens. Using cached contexts, that same 1,000 token call totals $0.0093, a significant saving for chatbots and RAG systems.
What is the context window for GPT-5.5?
GPT-5.5 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 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 API pricing per 1M tokens?
OpenAI lists GPT-5.5 at $5.00 per million input tokens, $0.50 per million cached input tokens, and $30.00 per million output tokens. OpenAI marks the API release as coming soon while ChatGPT and Codex rollout starts first.
What is the GPT-5.5 context window?
OpenAI says gpt-5.5 will come to the Responses and Chat Completions APIs with a 1M context window, while Codex access uses a 400K context window.