OpenAI Reasoning API

What OpenAI Reasoning does

CCAPI provides OpenAI o-series reasoning APIs for complex reasoning, coding, and multi-step tasks.

OpenAI Reasoning API features

• Easy-to-Use API — Use OpenAI-compatible interface, switch models without code changes.
• Streaming Output — Supports SSE streaming for real-time content generation.
• Flexible Parameters — Supports temperature, max_tokens and other control parameters.

What people build with OpenAI Reasoning

• Customer Service — Build intelligent customer service
• Writing Assistant — Assist with writing, translation, summarization
• Code Assistant — Assist with code writing and debugging

Getting started with the OpenAI Reasoning API

The endpoint is OpenAI-compatible, so existing client code usually needs only a base URL and a model name.

• Step 1: Sign Up or Log In — Create account and get API Token
• Step 2: Test in Playground — Test prompts and parameters
• Step 3: Integrate into Backend — Connect using API interface
• Step 4: Deploy for Production — Set up concurrency and cost control

OpenAI Reasoning API pricing

OpenAI Reasoning — billed per token

Why choose CCAPI for OpenAI Reasoning

• Unified Interface — Switch between chat and reasoning models through one Chat Completions interface.
• Unified authentication — Use one CCAPI token across models instead of managing separate credentials.
• Traceable usage — Review request logs, token usage, and charges in one place for debugging and reconciliation.

Other models on the same endpoint

The same API key and base URL reach every model below. Moving from OpenAI Reasoning to any of them means changing the model name in the request body.

• GPT-4.1 API — chat model on the same endpoint
• Claude Opus 4 API — chat model on the same endpoint
• Claude Sonnet 4 API — chat model on the same endpoint
• Claude Haiku 4.5 API — chat model on the same endpoint
• DeepSeek V4 API — chat model on the same endpoint
• MiniMax M2.7 API — chat model on the same endpoint

Frequently asked questions