Available now
OpenAI
gpt-5
GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy...
TextReasoningToolsFilesVision400KCache
Input$0.75/ 1M
Output$6.00/ 1M
Context400K
Endpointsopenai, anthropic
Capabilities
ReasoningToolsParallel toolsVisionFilesCacheStructuredStreamingSystem msg
Modalities
Input
textimagefile
Output
text
Quick stats
Context window400K
Max output128K
Modechat
TokenizerGPT
Knowledge cutoff2024
Performance
Loading performance data...
Supported parameters
| Parameter | Always | Default |
|---|---|---|
| frequency_penalty | - | (do not send) |
| include_reasoning | - | |
| max_completion_tokens | - | - |
| max_tokens | - | - |
| presence_penalty | - | (do not send) |
| reasoning | - | |
| repetition_penalty | - | (do not send) |
| response_format | - | |
| seed | - | |
| structured_outputs | - | |
| temperature | - | (do not send) |
| tool_choice | - | |
| tools | - | |
| top_k | - | (do not send) |
| top_p | - | (do not send) |
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Pricing
| Input price | $0.75 · 1M tokens |
| Output price | $6.00 · 1M tokens |
| Context window | 400K tokens |
| Compatible endpoints | openai, anthropic |
| Vendor | OpenAI |
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Call gpt-5 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-5",
"messages": [{"role": "user", "content": "Hello!"}]
}'§ 03
Frequently asked questions
How much does gpt-5 cost per 1M tokens?
Input is priced at $0.75 per 1M tokens, output at $6.00 per 1M tokens. Billing is per token, no rounding to batch sizes.
How do I access gpt-5 via API?
Send requests to the UnoRouter /v1/chat/completions endpoint with model=gpt-5. Any OpenAI-compatible client library works. Authentication uses a standard Bearer token.
What is the context window of gpt-5?
gpt-5 supports a context window of 400K tokens, shared between your prompt and the model's response.
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