Primex Developer Docs

One key for AI capabilities. Use one prx- key and one AI account for models, agents, image and video, speech, OCR, documents, translation, vision, language, safety, web search, and client-executed tools. Call the direct APIs, connect compatible developer clients, or work in Primex Chat.

Quick StartCreate a key and make your first call in a couple of minutes.CapabilitiesChoose an outcome, then find its route, billing unit, and live model.Chat & ResponsesOpenAI- and Anthropic-compatible endpoints for text, reasoning and agents.Images & VideoGenerate and edit images, then create video through model-agnostic routes.MCP & ToolsUse function tools, remote MCP, and metered web search.BillingAdd AI credits and understand plan allowances. Failed requests aren't billed.

Base URLs

Format	Base URL	Used by
OpenAI-compatible	https://gateway.primexos.com/v1	OpenAI SDKs, Cursor, Windsurf, Codex
Anthropic-compatible	https://gateway.primexos.com	Claude Code, Cline, Anthropic SDKs

note

The Anthropic base URL has no /v1 suffix. The Anthropic SDK and Claude Code append /v1/messages themselves. The OpenAI base URL includes /v1, and the SDK appends /chat/completions.

Your first request

curl https://gateway.primexos.com/v1/chat/completions \
  -H "Authorization: Bearer prx-YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.5",
    "messages": [{"role": "user", "content": "Hello from Primex!"}]
  }'

Ready to go? Start with Getting Started.

What one key covers

• Complete AI workflows: move from reasoning to media, voice, documents, search, safety, and execution without opening another provider account.
• Drop-in compatible: an OpenAI-compatible API and an Anthropic-compatible API. Change the base URL and key; your SDK stays the same.
• Works with your tools: Cursor, Windsurf, Codex CLI, Claude Code, Cline, Continue, and the raw OpenAI / Anthropic SDKs.
• Outcome-based metering: usage can be tokens, images, video seconds, audio minutes, pages, characters, records, searches, calls, or sessions.
• Pay only for successful work: credits move only after a successful response.

See the full Capability Map and discover current availability through Models and Live Catalogue.