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feat: add (openai, anthropic, gemini) providers via litellm (#1267)

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# What does this PR do?

This PR introduces more non-llama model support to llama stack.
Providers introduced: openai, anthropic and gemini. All of these
providers use essentially the same piece of code -- the implementation
works via the `litellm` library.

We will expose only specific models for providers we enable making sure
they all work well and pass tests. This setup (instead of automatically
enabling _all_ providers and models allowed by LiteLLM) ensures we can
also perform any needed prompt tuning on a per-model basis as needed
(just like we do it for llama models.)

## Test Plan

```bash
#!/bin/bash

args=("$@")
for model in openai/gpt-4o anthropic/claude-3-5-sonnet-latest gemini/gemini-1.5-flash; do
    LLAMA_STACK_CONFIG=dev pytest -s -v tests/client-sdk/inference/test_text_inference.py \
        --embedding-model=all-MiniLM-L6-v2 \
        --vision-inference-model="" \
        --inference-model=$model "${args[@]}"
done
```
This commit is contained in:
Ashwin Bharambe 2025-02-25 22:07:33 -08:00 • committed by GitHub
parent b0310af177
commit 63e6acd0c3
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25 changed files with 1048 additions and 33 deletions
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4
llama_stack/providers/tests/test_cases/inference/chat_completion.json
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@ -40,7 +40,7 @@
"tool_calling": {
"data": {
"messages": [
{"role": "system", "content": "You are a helpful assistant."},
{"role": "system", "content": "Pretend you are a weather assistant."},
{"role": "user", "content": "What's the weather like in San Francisco?"}
],
"tools": [
@ -65,7 +65,7 @@
"messages": [
{
"role": "system",
"content": "You are a helpful assistant."
"content": "Pretend you are a weather assistant."
},
{
"role": "user",