GPT-5.5 Pro API Pricing
OpenAI · Frontier · Proprietary · released 2026-04. Prices in USD per 1 million tokens. Data snapshot: 2026-08-14.
- Input: $30.00 per 1M tokens
- Output: $180.00 per 1M tokens
- Batch API (input/output): $15.00 / $90.00
- Prompt-cache read: not published
- Context window: 1M
- Arena ELO: 1485 (as of 2026-08-13)
- Available on: Direct API, Azure AI Foundry, OpenRouter (curated by hand — verify with the provider)
Cost per request by business use case
List price vs optimized (prompt caching on the cached input share, batch API for async workloads — only where the provider publishes those rates).
| Use case | Tokens (in/out) | Cost/req (list) | Cost/req (optimized) | Monthly @100K req |
|---|---|---|---|---|
| Support Ticket | 1,500 / 500 | $0.135 | $0.135 | $13.5K |
| Knowledge Q&A | 2,000 / 800 | $0.204 | $0.204 | $20.4K |
| Meeting Summary | 10,000 / 1,200 | $0.516 | $0.258 | $25.8K |
| Marketing Content | 2,500 / 1,800 | $0.399 | $0.399 | $39.9K |
| Coding Task | 3,000 / 2,000 | $0.450 | $0.450 | $45.0K |
| Invoice Processing | 1,500 / 600 | $0.153 | $0.076 | $7.6K |
| Call Summary | 2,000 / 700 | $0.186 | $0.093 | $9.3K |
| Agent Workflow | 6,000 / 3,000 | $0.720 | $0.720 | $72.0K |
These are list prices — real cost also depends on caching, batching, negotiated discounts, marketplace agreements, and existing contracts. Get a FinOps review from OptimNow or compare all models.