← All models
Input / 1M
$1.25
Output / 1M
$10.00
Context
400K tokens
Max output
128K tokens
Input
Text, Image, Pdf
Released
1y ago
Pricing
Input tokens$1.25 per 1M
Output tokens$10.00 per 1M
Provider list priceExactly what your balance is debited; our fee is charged when you buy credits
About GPT 5
Original GPT-5 workhorse for reasoning, coding, writing, and tool workflows
VisionReasoningTools
What it supports
- Tool calling (function calling)
- JSON mode and structured output
- Image input (vision)
- Audio input
- Extended reasoning
- Streaming responses
- OpenAI SDK, Anthropic SDK and any OpenAI-compatible client
Make a request
curl https://rapidrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $RAPIDROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "openai/gpt-5",
"messages": [{ "role": "user", "content": "Hello" }]
}'Frequently asked
How do I call GPT 5 through an OpenAI-compatible API?
Point any OpenAI-compatible client at https://rapidrouter.ai/api/v1 with a Rapid Router API key and set the model to openai/gpt-5. The chat completions endpoint is https://rapidrouter.ai/api/v1/chat/completions.
What is the context window of GPT 5?
GPT 5 has a context window of 400,000 tokens on Rapid Router, and returns up to 128,000 output tokens per reply.
What can GPT 5 do?
On Rapid Router, GPT 5 supports tool calling, JSON mode, image input, extended reasoning.