The Orchestrator › Models › OpenAI
OpenAI: GPT 5.1 Thinking
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.
Specifications
| Provider | OpenAI |
| Model ID | openai/gpt-5.1-thinking |
| Context window | 400K tokens (400,000) |
| Modalities | text + image + pdf → text |
| Tokenizer | — |
| Router sources | Vercel AI Gateway |
| Released | 2025-11-12 |
| Tracked since | 2026-11-14 |
| Popularity | Not in the ranked set |
| Reasoning | — |
Pricing (per million tokens)
| Variant | Source | API ID | Input | Output | Context |
|---|---|---|---|---|---|
| standard | Vercel AI Gateway | openai/gpt-5.1-thinking | $1.25 | $10.00 | 400K |
| fast | Vercel AI Gateway | openai/gpt-5.1-thinking:fast | $2.50 | $20.00 | 400K |
Recorded price history
| Date | Input / 1M | Output / 1M | Context |
|---|---|---|---|
| 2026-11-14 | $1.25 | $10.00 | 400K |
Capabilities
Vision (image input)Agentic tool useStructured outputs256K+ context windowControllable reasoningZero data retentionNo training on inputs (attested)
Trust flags come from TrustedRouter's per-provider attestations.
Supported parameters
max_tokens, temperature, stop, tools, tool_choice, reasoning, include_reasoning, response_format, structured_outputs