Model
GPT 5.1 Thinking (Fast)
1 providers
$2.50
best input /M · Vercel AI Gateway
$20
best output /M
400K
context window
128K
max output
Compare providers (sorted by listed input price)
| Provider | Input /M | Output /M | Cache read /M | Cache write /M | Context | Capabilities | Status | Updated |
|---|---|---|---|---|---|---|---|---|
| Vercel AI Gateway openai/gpt-5.1-thinking-fast | $2.50 | $20 | $0.25 | — | 400K | reasoningtoolsno structuredvision | Nov 12, 2025 |
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Prices are per million tokens (USD). “—” means the provider does not publicly list a price for this model. Data from models.dev; verify with the provider before purchasing.