OpenAI: GPT-5.1 Chat
openai/gpt-5.1-chat
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...
Prompt $/1M
$1.250
Completion $/1M
$10.000
Context
128,000 tok
Best provider
112 tok/s · Artificial Analysis
Specs
- Model id
- openai/gpt-5.1-chat
- Display name
- OpenAI: GPT-5.1 Chat
- Modality
- text+image+file->text
- Tokenizer
- GPT
- Instruct type
- —
- Context length
- 128,000
- Max completion
- 16,384
- Prompt $/1M
- $1.250
- Completion $/1M
- $10.000
- Free tier
- no
Capabilities
- Function callingno
- JSON modeno
- System promptno
- Visionno
- Moderatedyes
Benchmark scores
Each axis is one benchmark, normalized to the best model in the field.
No benchmark data for this model.
Speed by provider
| Provider | tok/s |
|---|---|
| Artificial Analysis | 112 |
| OpenAIfastest | 53 |
| Azure | 48 |