GPT 5.5 pricing
$$$$ Top-tier$5.00/M input · $30.00/M output. List prices from provider data; in idapt, chat is metered per token with transparent, usage-based pricing at the prices shown in the app.
Full rate table
| Rate | Price | Unit |
|---|---|---|
| Input | 5 | /M tokens |
| Output | 30 | /M tokens |
| Cache read | 0.5 | /M tokens |
| Web search | 0.01 | /search |
What typical work costs
| Workload | Tokens | List price |
|---|---|---|
| Quick question | 1K tokens in, 500 out | $0.02 |
| Long-document summary | 60K tokens in, 2K out | $0.36 |
| Agent working session | 400K tokens in, 40K out across a day | $3.20 |
Price your own workload
- Per call
- $0.02
- Per month
- $2.00
Compare up to four models at once in the cost calculator.
Frequently asked
What does GPT 5.5 cost per 1M tokens?
GPT 5.5 lists at $5.00 per 1M input tokens and $30.00 per 1M output tokens.
Does GPT 5.5 discount cached input tokens?
Yes. Cached input tokens are billed at $0.50 per 1M, versus $5.00 for fresh input. Prompts that repeat a long prefix (a system prompt, attached files) benefit the most.
What does a typical chat message with GPT 5.5 cost?
A message with about 1,000 input tokens and a 500-token reply costs roughly $0.02 at list price. Long documents and long replies scale that linearly with token counts.
Is GPT 5.5 cheaper than GPT 5.5 Pro?
GPT 5.5 has the lower blended price at a 3:1 input:output mix. GPT 5.5: $5.00 in / $30.00 out per 1M. GPT 5.5 Pro: $30.00 in / $180.00 out per 1M.
How does idapt bill GPT 5.5?
Chat with GPT 5.5 in idapt is metered per token with transparent, usage-based pricing at the prices shown in the app. Subscriptions include a weekly usage allowance before any balance is touched.
Part of the GPT 5.5 model page · cheapest models board · price changes