OpenAI: GPT-5.1 Chat
128k context
Lowest Price
$1.25
per 1M tokens
Providers
1
Available
Context
128k
tokens
Price Comparison
| Provider | Input / Output | Latency | Status | |
|---|---|---|---|---|
| OpenRouterLowest | $1.25/$10.00 | ... | Verified |
About This Model
GPT-5.1 Chat (AKA Instant is the fast, lightweight member of the 5.1 family, optimized for low-latency chat while retaining strong general intelligence. It uses adaptive reasoning to selectively “think” on harder queries, improving accuracy on math, coding, and multi-step tasks without slowing down ...
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