OpenAI: GPT-5.1 Chat
🇺🇸 OpenAI · GPT-5.1 Chat
Input Price $1.25 per million tokens NT$40.0
Output Price $10.00 per million tokens NT$320
Context Window 128K tokens Output limit: 32K
OpenRouter Route Price Please verify with official pricing pages
| Dimension | Unit | Price (USD) |
|---|---|---|
| Input | per 1M tokens | $1.25 |
| Output | per 1M tokens | $10.00 |
| Cached Input | per 1M tokens | $0.130 |
| Web Search | per search | $0.010 |
- Provider
- OpenAI (OpenAI)
- Model Family
- GPT-5.1 Chat
- Version String
- openai/gpt-5.1-chat
- Status
- active
- Modality
- file, image, text
- Context Window
- 128,000 tokens
- Output Limit
- 32,000 tokens
90-Day Price Trend
Input / Output price (USD per 1M tokens)
Past 90 days of records; every price change is shown here
| Date | Dimension | Price (USD) | Source |
|---|---|---|---|
| 2026-05-27 | Web Search | $0.010 | openrouter |
| 2026-05-27 | Cached Input | $0.130 | openrouter |
| 2026-05-27 | Output | $10.00 | openrouter |
| 2026-05-27 | Input | $1.25 | openrouter |
| 2026-05-26 | Web Search | $0.010 | openrouter |
| 2026-05-26 | Cached Input | $0.125 | openrouter |
| 2026-05-26 | Output | $10.00 | openrouter |
| 2026-05-26 | Input | $1.25 | openrouter |
| 2026-05-25 | Web Search | $0.010 | openrouter |
| 2026-05-25 | Cached Input | $0.125 | openrouter |
| 2026-05-25 | Output | $10.00 | openrouter |
| 2026-05-25 | Input | $1.25 | openrouter |
| 2026-05-24 | Web Search | $0.010 | openrouter |
| 2026-05-24 | Cached Input | $0.125 | openrouter |
| 2026-05-24 | Output | $10.00 | openrouter |
| 2026-05-24 | Input | $1.25 | openrouter |
| 2026-05-23 | Web Search | $0.010 | openrouter |
| 2026-05-23 | Cached Input | $0.125 | openrouter |
| 2026-05-23 | Output | $10.00 | openrouter |
| 2026-05-23 | Input | $1.25 | openrouter |
| 2026-05-22 | Web Search | $0.010 | openrouter |
| 2026-05-22 | Cached Input | $0.125 | openrouter |
| 2026-05-22 | Output | $10.00 | openrouter |
| 2026-05-22 | Input | $1.25 | openrouter |
| 2026-05-22 | Web Search | $0.010 | openrouter |
| 2026-05-22 | Cached Input | $0.125 | openrouter |
| 2026-05-22 | Output | $10.00 | openrouter |
| 2026-05-22 | Input | $1.25 | openrouter |
| 2026-05-21 | Web Search | $0.010 | openrouter |
| 2026-05-21 | Cached Input | $0.125 | openrouter |
| 2026-05-21 | Output | $10.00 | openrouter |
| 2026-05-21 | Input | $1.25 | openrouter |
| 2026-05-20 | Web Search | $0.010 | openrouter |
| 2026-05-20 | Cached Input | $0.125 | openrouter |
| 2026-05-20 | Output | $10.00 | openrouter |
| 2026-05-20 | Input | $1.25 | openrouter |
| 2026-05-19 | Web Search | $0.010 | openrouter |
| 2026-05-19 | Cached Input | $0.125 | openrouter |
| 2026-05-19 | Output | $10.00 | openrouter |
| 2026-05-19 | Input | $1.25 | openrouter |
| 2026-05-18 | Web Search | $0.010 | openrouter |
| 2026-05-18 | Cached Input | $0.125 | openrouter |
| 2026-05-18 | Output | $10.00 | openrouter |
| 2026-05-18 | Input | $1.25 | openrouter |
| 2026-05-17 | Web Search | $0.010 | openrouter |
| 2026-05-17 | Cached Input | $0.125 | openrouter |
| 2026-05-17 | Output | $10.00 | openrouter |
| 2026-05-17 | Input | $1.25 | openrouter |
| 2026-05-16 | Web Search | $0.010 | openrouter |
| 2026-05-16 | Cached Input | $0.125 | openrouter |
Description
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...
Key Insights
Key data points from this page for quick reference and citation.
- OpenAI: GPT-5.1 Chat Input price: $1.25/M tokens
- OpenAI: GPT-5.1 Chat Output price: $10/M tokens
- Context window: 128,000 tokens
- Provider: OpenAI
- Model family: GPT-5.1 Chat
- Modalities: file, image, text
- Data source: OpenRouter, updated daily