Available models
Discover the smaller model set enabled for the current Essevin consumer key.
The Essevin consumer catalog is intentionally smaller than the full business catalog. Availability is controlled by the key group, so the authenticated model response is the source of truth.
Supported families
| Family | Typical use | Protocol |
|---|---|---|
| Claude | Claude Code and Anthropic Messages | Anthropic |
| GPT / Codex | Chat Completions, Responses, and coding clients | OpenAI |
| Gemini chat | General chat through Chat Completions | OpenAI-compatible |
| GPT Image / Gemini image | Image generation and supported editing | OpenAI Images |
Representative IDs used across the landing pages include claude-sonnet-4-6, claude-opus-4-8, gpt-5.5, the gpt-5.6-* routes, gpt-image-2, gemini-3.5-flash, and Gemini image models. These are examples, not a promise that every key exposes every route.
Query the current key
curl https://api.essevin.com/v1/models \
-H "Authorization: Bearer $ESSEVIN_API_KEY"Use the intended plan key
Query Claude with a Claude-group key, GPT or Codex with an OpenAI/Codex-group key, and Gemini with a Gemini-group key.
Copy the complete ID
Preserve prefixes, suffixes, dots, and hyphens exactly as returned. Do not reconstruct a model name from a display label.
Match the protocol
Claude uses the Anthropic Base URL without /v1. GPT, Codex, Gemini chat, and image models use https://api.essevin.com/v1 with their matching OpenAI-compatible endpoint.
On model_not_found, query /v1/models again with the same key. Switching to a similarly named model without checking the response can move the request to the wrong plan group.
The signed-in model catalog shows current availability and pricing for the account.