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Tokenless is an OpenAI- and Anthropic-compatible routing API. Your application sends a routing mode instead of selecting a provider model; Tokenless chooses the underlying model and returns the response in the wire format you already use.

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Start in three steps

  1. Create an API key in the Tokenless dashboard. The full key is shown once, so store it as a secret.
  2. Point the OpenAI or Anthropic SDK at Tokenless.
  3. Send tokenless-pro as the model for the default routing mode.
Compatibility surfaceBase URL
OpenAIhttps://api.usetokenless.com/openai/v1
Anthropichttps://api.usetokenless.com/anthropic

Quickstart

Make a streamed request with your first Tokenless API key.

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What stays compatible

Use the standard SDK streaming and response parsers. Tokenless supports Chat Completions, Responses, and Anthropic Messages, including tool calls and image inputs. Both streaming and non-streaming requests are accepted. This documentation does not provide an interactive API playground. Examples are copyable, but the docs site never accepts a key or sends a request on your behalf.

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Choose a routing mode

  • tokenless-pro balances answer quality, latency, and cost for most tasks.
  • tokenless-max favors stronger candidates for difficult, high-value work.
  • tokenless-ultra-saver prioritizes lower cost and higher throughput.