# EvoLink

> EvoLink is an AI model gateway: one API key for 170+ models — LLMs (GPT, Claude, Gemini, GLM, DeepSeek) plus image, video and music generation — automatically routed to the lowest available price. Endpoints are OpenAI-, Anthropic- and Gemini-compatible, so agents and existing SDKs connect by changing only the base URL and key.

## Connect an agent

- Base URLs: Anthropic-style clients use https://direct.evolink.ai · OpenAI-compatible clients use https://direct.evolink.ai/v1 · Gemini-style clients use https://direct.evolink.ai/v1beta
- Auth: Bearer API key ("Authorization: Bearer <key>"; Anthropic-style also accepts x-api-key). MCP servers and skills read the EVOLINK_API_KEY environment variable.
- [Create an API key](https://evolink.ai/signup?returnUrl=/dashboard/keys&utm_source=llms_txt): takes about 30 seconds.

## Machine-readable model catalog

- [Model list, OpenAI format](https://direct.evolink.ai/v1/models): GET with Bearer key; returns model ids with supported_endpoint_types.
- GLM-5.3 family: use glm-5.3-flash for high-volume and multimodal work (text, image, video, files), and glm-5.3 for difficult text-only coding and long-horizon engineering; both expose 1M context, always-on reasoning, tool calling and prompt caching through the unified API. [GLM-5.3 details](https://evolink.ai/glm-5-3) · [GLM-5.3 Flash details](https://evolink.ai/glm-5-3-flash) · [Family routing guide](https://evolink.ai/blog/glm-5-3-flash-vs-glm-5-3)
- Featured LLM: claude-fable-5 (Claude Fable 5, the previous Fable generation) — OpenAI-compatible: POST https://direct.evolink.ai/v1/chat/completions with model "claude-fable-5". [Model details](https://evolink.ai/claude-fable-5) · [Launch page](https://evolink.ai/launch/fable-5)
- Newest Anthropic flagship: claude-fable-5-1 (Claude Fable 5.1 — Anthropic's most capable model, the Fable tier above Opus; 1M context, 128K max output, prompt caching read + write with cache reads at a quarter of Fable 5's rate, web search tool; 5% below official token pricing) — OpenAI-compatible: POST https://direct.evolink.ai/v1/chat/completions with model "claude-fable-5-1"; Anthropic-style: POST https://direct.evolink.ai/v1/messages. [Model details & pricing](https://evolink.ai/claude-fable-5-1)
- Anthropic Opus-tier flagship: claude-opus-5 (Claude Opus 5 — 1M context, 128K max output, prompt caching read + write, web search tool; 5% below official token pricing) — OpenAI-compatible: POST https://direct.evolink.ai/v1/chat/completions with model "claude-opus-5"; Anthropic-style: POST https://direct.evolink.ai/v1/messages. [Model details & pricing](https://evolink.ai/claude-opus-5)
- Newest Google Flash LLM: gemini-3.8-flash (Gemini 3.8 Flash — GA 2026-09-02; 1,048,576-token context, 65,536 max output; text, image, video, audio and PDF input; thinking levels low / medium / high, prompt caching, function calling, structured output) — OpenAI-compatible: POST https://direct.evolink.ai/v1/chat/completions with model "gemini-3.8-flash" · Gemini-native: POST https://direct.evolink.ai/v1beta/models/gemini-3.8-flash:generateContent. [Model page & current pricing](https://evolink.ai/gemini-3-8-flash) · [3.8 vs 3.7 Flash decision guide](https://evolink.ai/blog/gemini-3-8-flash-vs-gemini-3-7-flash) · [API integration guide](https://evolink.ai/blog/how-to-use-gemini-3-8-flash-api) · [Gemini family comparison](https://evolink.ai/collections/gemini)
- Newest video flagship: Seedance 2.5 is live on EvoLink (five routes; 1080p verified 2026-08-17) — 4-30s one-shot clips, 480p/720p/1080p, synchronized audio, up to 50 reference inputs across five model IDs (seedance-2.5-text-to-video / image-to-video / reference-to-video / video-edit / video-extend); async task flow via POST https://direct.evolink.ai/v1/videos/generations. [Model page & pricing](https://evolink.ai/seedance-2-5) · [Integration docs](https://evolink.ai/docs/en/api-manual/video-series/seedance2.5/seedance-2.5-text-to-video) · [2.5 vs 2.0 decision guide](https://evolink.ai/blog/seedance-2-5-vs-seedance-2-0) · [120+ copy-ready Seedance 2.5 prompts with video examples](https://evolink.ai/seedance-2-5-prompts)
- Newest 4K video route: Gemini Omni 1.1 Flash is live on EvoLink (five routes) — 3-10s clips at native 360p/720p or upscaled 1080p/4K, with synchronized audio, first-and-last-frame image control, up to three reference videos, plus video edit and extend across five model IDs (gemini-omni-1.1-flash-text-to-video / image-to-video / reference-to-video / video-edit / video-extend); token-based billing, async task flow via POST https://direct.evolink.ai/v1/videos/generations. Note: for video-extend, duration is the number of seconds APPENDED, not the total length. [Model page & pricing](https://evolink.ai/gemini-omni-1-1-flash)
- Featured image model: doubao-seedream-5.0-pro (Seedream 5.0 Pro — 1K/2K output tiers, up to 10 reference images, instruction-based editing; input images billed per image) — POST https://direct.evolink.ai/v1/images/generations. [Model page & pricing](https://evolink.ai/seedream-5-0-pro) · [Multi-reference workflow guide](https://evolink.ai/blog/how-to-use-seedream-5-0-pro-multi-reference-image-generation)
- New image model: grok-imagine-image-2.0 (xAI Grok Imagine Image 2.0 — text-to-image and 1-3 reference-image editing in one model, Low/Medium quality, 1K/2K resolution, 1-10 images per request) — POST https://direct.evolink.ai/v1/images/generations. [Model page & pricing](https://evolink.ai/grok-imagine-image-2-0)
- [Pricing catalog, anonymous](https://api.evolink.ai/web/api/models/pricing): GET, no auth; returns the whole catalog in one JSON response — no pagination and no query filters — as a "data" array of SKUs with model_name, model_type (text/image/video/audio), billing_rule, prices (USD/CNY/credits) and metadata. For one model only: GET https://api.evolink.ai/web/api/models/pricing/{model_name} (e.g. .../pricing/claude-opus-5).
- [Human-readable model pages](https://evolink.ai/models)

## MCP servers (official)

- [@evolinkai/evolink-media](https://www.npmjs.com/package/@evolinkai/evolink-media): image / video / music generation with 60+ models as agent tools, plus model discovery and async task tracking. Install: npx -y @evolinkai/evolink-media@latest (env EVOLINK_API_KEY).
- [@evolinkai/evolink-router](https://www.npmjs.com/package/@evolinkai/evolink-router): route text subtasks to 20+ LLMs — smart_route (recommend), cascade (cost-aware escalation), delegate (run on one model), list_text_models.

## Agent skills (one npx command teaches your agent one model)

- evolink-seedance (video), evolink-gpt-image (image), evolink-nanobanana-2-lite (image), evolink-midjourney (image), evolink-seed-audio (audio), evolink-topaz-video-upscale (upscaling)
- [All skills and MCP source](https://github.com/EvoLinkAI)

## Docs

- [Developer documentation](https://evolink.ai/docs) — full API reference and integration guides ([docs llms.txt](https://evolink.ai/docs/llms.txt))
- [Per-agent integration guides](https://evolink.ai/docs/en/integration-guide/claude-code-cli): Claude Code CLI, Codex CLI, Gemini CLI, OpenClaw, OpenCode, Hermes, Claude Desktop, CodeBuddy

## Optional

- [Full overview in one document](https://evolink.ai/llms-full.txt): billing model, async video task flow, model specs and prices without crawling individual pages.
- [Pricing overview](https://evolink.ai/models)
- [Blog](https://evolink.ai/blog)
- [API changelog](https://evolink.ai/changelog)