LiteLLM with idapt

One provider block in LiteLLM routes every catalog model through idapt.

Last reviewed 2026-07-17

Install

bash

pip install litellm

Point it at idapt

python

from litellm import completion

reply = completion(
    model="openai/anthropic/claude-sonnet-5",
    api_base="https://idapt.app/api/openai/v1",
    api_key=os.environ["IDAPT_API_KEY"],
    messages=[{"role": "user", "content": "Three facts about ravens."}],
)

LiteLLM's openai/ prefix selects the OpenAI wire protocol; the rest is the catalog model id.

Going further

yaml

# litellm proxy config.yaml
model_list:
  - model_name: sonnet
    litellm_params:
      model: openai/anthropic/claude-sonnet-5
      api_base: https://idapt.app/api/openai/v1
      api_key: os.environ/IDAPT_API_KEY

Proxy mode: every model_list entry can point at a different catalog model behind one upstream key.

Pitfalls

Double prefix is intentional

openai/anthropic/claude-sonnet-5 reads as wire-protocol openai + catalog id anthropic/claude-sonnet-5. Dropping the first segment makes LiteLLM guess the provider.

References

More quickstarts

OpenAI SDK (Python)curl