Available now
OpenAI
gpt-4.1
GPT-4.1 is a flagship large language model optimized for advanced instruction following, real-world software engineering, and long-context reasoning. It supports a 1 million token context window and outperforms GPT-4o and...
TextToolsFilesVision1MCache
InputFree
OutputFree
Endpointsopenai
Capabilities
ToolsParallel toolsVisionFilesCacheStructuredStreamingSystem msg
Modalities
Input
imagetextfile
Output
text
Quick stats
Context window1M
Max output32.8K
Modechat
TokenizerGPT
Knowledge cutoff2024
Performance
Loading performance data...
Supported parameters
| Parameter | Always | Default |
|---|---|---|
| max_completion_tokens | - | - |
| max_tokens | - | - |
| response_format | - | |
| seed | - | |
| structured_outputs | - | |
| temperature | - | |
| tool_choice | - | |
| tools | - | |
| top_p | - |
§ 01
Pricing
| Input price | $0.00 · 1M tokens |
| Output price | $0.00 · 1M tokens |
| Compatible endpoints | openai |
| Vendor | OpenAI |
§ 02
Call gpt-4.1 from your code
Point any OpenAI-compatible SDK at UnoRouter and request the model by name. Replace YOUR_API_KEY with a real key from your dashboard.
bash
curl https://api.unorouter.com/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-4.1",
"messages": [{"role": "user", "content": "Hello!"}]
}'§ 03
Frequently asked questions
How much does gpt-4.1 cost per 1M tokens?
Input is priced at $0.00 per 1M tokens, output at $0.00 per 1M tokens. Billing is per token, no rounding to batch sizes.
How do I access gpt-4.1 via API?
Send requests to the UnoRouter /v1/chat/completions endpoint with model=gpt-4.1. Any OpenAI-compatible client library works. Authentication uses a standard Bearer token.
§ 04