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GPT 5.5 (latest) API price
openai/gpt-5.5
The cheapest GPT 5.5 (latest) API is $3.25/M input at Cheaper Inference (discount marketplace) - all 5 providers compared below, per 1M tokens.
Rolling name - always points to the newest snapshot of this model. The pinned snapshots are priced separately: GPT 5.5 (04-23 snapshot).
MidOpenAI1.1M context5 sellers
Input
$3.25
per 1M tokens · Cheaper Inference (discount marketplace)
up to $5.00
Output
$19.50
per 1M tokens · Cheaper Inference (discount marketplace)
up to $30.00
Where to buy it
Cheapest GPT 5.5 (latest) API providers compared - 5 sellers, from $3.25/M.
Cost calculator
| Provider | Input $/M | Output $/M | Cached in | Your cost |
|---|---|---|---|---|
| Cheaper Inference (discount marketplace)35% off | 3.25cheapest | 19.50 | 0.325 | |
| OpenRouter (aggregator) | 5.00 | 30.00 | 0.500 | |
| Batch | 2.50 | 15.00 | 0.250 | |
| OrcaRouter (aggregator) | 5.00 | 30.00 | - | |
| TokenRouter (aggregator) | 5.00 | 30.00 | 0.500 | |
| BatchOfficial - OpenAI | 2.50 | 15.00 | 0.250 | |
| <272K ctx | 5.00 | 30.00 | 0.500 | |
| Flex | 2.50 | 15.00 | 0.250 | |
| Priority | 12.50 | 75.00 | 1.25 |
1.5× between the cheapest and the dearest of 5 sellers.
Against its tier
- This model$22.75
- Cheapest · Nemotron 3.5 Content Safety$0.40
- Tier median · GLM 5.1$4.002
- Dearest · GPT 5.5 Cyber$87.50
#32 of 35 mid · cheaper than 9%
Details
- Context window
- 1.1M1,050,000 tokens
- Developer
- OpenAI
- Intelligence
- 38.4 Xhigh
- Sellers
- 51.5× spread
- Cached input
- $0.325where the source publishes one
- Cheapest at
- Cheaper Inference (discount marketplace)
- Combined
- $22.75in + out per 1M
- Last checked
- 2026-10-12