# CDAPI

> CDAPI is an AI model API aggregation and compatibility gateway. One API key connects OpenAI-compatible, Anthropic-compatible, Gemini and multimodal model endpoints.

## Start here

- [Home](https://ai.bycomet.cc/): Product overview and base URLs.
- [Live model pricing](https://ai.bycomet.cc/pricing/): Interactive model, group and pricing comparison.
- [Quick Start](https://ai.bycomet.cc/docs/quickstart/): Create a key and complete the first request.
- [Client setup](https://ai.bycomet.cc/docs/clients/): Codex CLI, Claude Code, Cursor, CC Switch and desktop clients.
- [API reference](https://ai.bycomet.cc/docs/api/): Authentication, model listing, Responses, Chat Completions, Anthropic Messages, image and video APIs.
- [Pricing and billing](https://ai.bycomet.cc/docs/billing/): Official USD numeric conversion, group multipliers, cache dimensions and actual charges.
- [Smart routing](https://ai.bycomet.cc/docs/smart-routing/): Model boundaries, effective-price selection, failover and final route logging.
- [AIGC Workshop](https://ai.bycomet.cc/docs/aigc/): Group-aware image and video models, references, task records and downloads.
- [Troubleshooting](https://ai.bycomet.cc/docs/errors/): 401, 404, 429, 5xx, unavailable models, timeouts and streaming errors.

## Model categories

- [GPT API](https://ai.bycomet.cc/models/gpt/): GPT text and reasoning models, Responses and Chat Completions.
- [Claude API](https://ai.bycomet.cc/models/claude/): Claude models and Anthropic Messages compatibility.
- [Gemini API](https://ai.bycomet.cc/models/gemini/): Current Gemini models, endpoints and supported groups.
- [Image generation API](https://ai.bycomet.cc/models/image/): Current image models and supported drawing groups.
- [Seedance video API](https://ai.bycomet.cc/models/video/): Current video models and long-running task access.

## Live machine-readable sources

- [Model and group pricing catalog](https://ai.bycomet.cc/api/geo/catalog): Current models backed by enabled channels, their supported groups, endpoint types, capabilities and calculated prices.
- [Expanded live text catalog](https://ai.bycomet.cc/api/geo/llms-full): Current model catalog in plain text.
- Category JSON: https://ai.bycomet.cc/api/geo/catalog/{product}, where product is gpt, claude, gemini, image, video or other.
- Exact model JSON: https://ai.bycomet.cc/api/geo/models/{model_id}.

## API base URLs

- Standard OpenAI-compatible base URL: https://ai.bycomet.cc/v1
- Direct base URL for image, video, long streaming and slow tasks: https://api-direct.ai.bycomet.cc/v1

## Pricing rule

CDAPI converts the official USD numeric price at 1 USD = 1 CNY, then applies the selected group multiplier. The official CNY reference uses approximately 1 USD = 7 CNY. A model receives a group quote only when that model currently has an enabled channel in that group and the group has a valid public multiplier.

## Freshness rule

Never infer availability from a copied model list. Query the live catalog and retain its version and checked_at values with any answer about current models, groups or prices.