GPT 5.1 Thinking (Fast)
An upgraded version of GPT-5 that adapts thinking time more precisely to the question to spend more time on complex questions and respond more quickly to simpler tasks.
- Input and output price
- Input $2.50, Output $20, Per 1M tokens
- 24h uptime
- Loading AI Gateway uptimeBase model
import { streamText } from 'ai'
const result = streamText({ model: 'openai/gpt-5.1-thinking-fast', prompt: 'Why is the sky blue?'})Copy link to headingProviders
Route requests across multiple providers. Copy a provider slug to set your preference. Visit the docs for more info. Using a provider means you agree to their terms, listed under Legal.
Copy link to headingPlayground
Try out GPT 5.1 Thinking (Fast) by OpenAI. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.
GPT 5.1 Thinking (Fast)
GPT 5.1 Thinking (Fast)
Copy link to headingUptime24 hours
Direct request success rate on AI Gateway and per-provider. Uptime reflects the base model. Visit the docs for more info.
Copy link to headingThroughput24 hours
P50 throughput on live AI Gateway traffic, in tokens per second (TPS). Visit the docs for more info.
Copy link to headingLatency24 hours
P50 time to first token (TTFT) on live AI Gateway traffic, in milliseconds. View the docs for more info.
Copy link to headingMore models by OpenAI
| Model |
|---|
| 1.1M | 3.5 s | 49 tps | $10/M+2 more | $50/M+2 more | Read$1/M Write$12.50/M | $10/K | +4 |  | 09/04/2026 | |||||
| 1.1M | 2.3 s | 146 tps | $0.20/M+2 more | $1.20/M+2 more | Read$0.02/M Write$0.25/M | $10/K | +4 |  | 07/09/2026 | |||||
| 1.1M | 2.2 s | 118 tps | $2/M+2 more | $10/M+2 more | Read$0.20/M Write$2.50/M | $10/K | +4 | | 07/09/2026 | |||||
| 1.1M | 1.8 s | 89 tps | $2/M+2 more | $12/M+2 more | Read$0.20/M Write$2.50/M | $10/K | +4 | | 07/09/2026 | |||||
| 400K | 4.4 s | 272 tps | $0.05/M | $0.40/M | Read$0.005/M | $14/K | +3 | | 08/07/2025 | |||||
| — | $0.02/M | — | | 01/25/2024 |