OPENAI-COMPATIBLE API
An OpenAI-compatible API lets an existing client talk to another model gateway through familiar request shapes. WorldGate supports compatible chat completions, model discovery, streaming, and Responses-style agent traffic for its published GPT and Claude catalogue. Compatibility reduces migration work, but every application should still test model behavior, tool calls, limits, and billing before production.
Create an accountThe client keeps familiar authorization, messages, model, temperature, streaming, and tool fields while the base URL points to WorldGate. Compatibility describes the API surface; it does not claim that every provider-specific model, parameter, response detail, or behavior is identical.
Use /v1/models to discover the current catalogue, /v1/chat/completions for chat-shaped requests, and /v1/responses for compatible agent workflows. Claude-native Messages traffic uses a separate Anthropic-compatible /v1/messages surface.
Change the API key, base URL, and model identifier in a staging environment. Run representative prompts and compare text quality, structured output, tool calls, stream events, latency, errors, token counts, and charged cost before increasing traffic.
A compatible client does not translate arbitrary provider model names automatically. Select an identifier returned by WorldGate's models endpoint and keep model selection in configuration so it can be changed without editing application logic.
Store WORLDGATE_API_KEY in a server-side secret manager or environment variable. Do not put a live key in browser JavaScript, mobile binaries, public repositories, logs, analytics events, or support screenshots.
Per-token price is only one input. Record prompt and completion tokens, cache use, retries, failures, and the number of successful tasks. Use separate project keys, hard caps, and balance alerts to make migration experiments measurable.
COMPATIBLE REQUEST
List available models first, then test the exact parameters and response fields your application uses.
curl https://worldgateapi.com/v1/chat/completions \
-H "Authorization: Bearer $WORLDGATE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-sonnet-5",
"messages": [{"role":"user","content":"Explain this API migration."}],
"stream": false
}'METHODOLOGY & SOURCES
WorldGate compatibility details reviewed against the deployed gateway and automated compatibility tests on July 31, 2026. Client libraries can change, so pin and test the version used by your application.
COMMON QUESTIONS
It is an API that accepts familiar OpenAI-style authentication and request shapes so supported clients can use a different base URL with fewer code changes.
Yes for the compatible surfaces WorldGate documents. Set the WorldGate base URL, use a WorldGate key, and choose a currently listed model identifier.
No. Compatibility is endpoint-specific. Validate every parameter, tool workflow, response field, and streaming event your application depends on.
Yes. Listed Claude models can be called through the OpenAI-compatible chat completions surface. WorldGate also provides an Anthropic-compatible Messages endpoint for supported native clients.
Create a dedicated API key, set a hard cap if the experiment needs a strict ceiling, enable balance alerts, and compare final billed cost per successful task.
Lower model cost. Clearer usage.