OpenAI: GPT 5.5 (Fast)
Default frontier GPT for coding, computer use, research, and knowledge work
Cheapest input
$12.50
$/MTok · models.dev
Cheapest output
$75
$/MTok
Context
1M
tokens
Sources
1
1 listing
Sources
Same model, different sources. Our first-party rate is listed first, then router and aggregator rows stay separate so you can see the spread instead of a single blended number.
| Source | Provider | Input | Output | Cache read | Context |
|---|---|---|---|---|---|
| models.devcheapestopenai/gpt-5.5-fast | Vercel AI Gateway | $12.50 | $75 | $1.25 | 1M |
Capabilities
- Reasoning
- Tool calling
- Structured output
- Attachments
- In: text
- In: image
- In: pdf
- Out: text
Knowledge cutoff: 2025-12-01Released: 2026-04-23Family: gpt
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Data and list-price estimates may contain mistakes. Not investment advice.