OpenAI: GPT-5.1 Chat API pricing
Token pricing
| Model | Provider | Input / 1M | Output / 1M | Context | Modalities |
|---|---|---|---|---|---|
| OpenAI: GPT-5.1 Chat | OpenAI | $1.25 | $10.00 | 128,000 (128K) | file, image, texttext |
Capabilities
Context window
128,000 (128K)
Max output
16,384 (16K)
Input modalities
file, image, text
Output modalities
text
Supported parameters
max_completion_tokens
max_tokens
response_format
seed
structured_outputs
tool_choice
tools
Similar models
| Model | Input / 1M | Output / 1M | Context | Modalities |
|---|---|---|---|---|
| OpenAI: GPT-5 Chat | $1.25 | $10.00 | 128,000 (128K) | file, image, texttext |
| OpenAI: GPT-5 | $1.25 | $10.00 | 400,000 (400K) | text, image, filetext |
| OpenAI: GPT-5 Codex | $1.25 | $10.00 | 400,000 (400K) | text, imagetext |
| OpenAI: GPT-5.1 | $1.25 | $10.00 | 400,000 (400K) | image, text, filetext |
| OpenAI: GPT-5.1-Codex | $1.25 | $10.00 | 400,000 (400K) | text, imagetext |
| OpenAI: GPT-5.1-Codex-Max | $1.25 | $10.00 | 400,000 (400K) | text, imagetext |
| OpenAI: o3 Mini | $1.10 | $4.40 | 200,000 (200K) | text, filetext |
| OpenAI: o3 Mini High | $1.10 | $4.40 | 200,000 (200K) | text, filetext |