feat(openinfer): add OpenInfer as an OpenAI-compatible provider

[AJ-ing]

Summary

• Adds OpenInfer (openinfer) as a JSON-configured OpenAI-compatible provider
• API base: https://api.openinfer.ai/v1 (overridable via OPENINFER_API_BASE)
• API key: OPENINFER_API_KEY
• Supports /v1/chat/completions (as requested in [Feature]:Add OpenInfer Provider #34357)

Motivation

OpenInfer asked for a native LiteLLM provider in #34357 so users don't need the generic OpenAI-compatible path. This follows the same pattern as other JSON providers (e.g. Pinstripes).

Test plan

• Added tests/test_litellm/llms/openai_like/test_openinfer_provider.py
• pytest tests/test_litellm/llms/openai_like/test_openinfer_provider.py
• Manual: litellm.completion(model="openinfer/<model>", api_key=...) when a key is available

Closes #34357

Made with Cursor

[CLAassistant]

All committers have signed the CLA.

[greptile-apps]

Greptile Summary

Adds OpenInfer as a JSON-configured OpenAI-compatible chat provider.

• Registers provider discovery, API endpoint, environment-based credentials, and shared OpenAI handler routing.
• Adds model pricing/context metadata and endpoint-support metadata.
• Adds unit coverage for registration, configuration, environment overrides, URL detection, and chat-completion URL construction.

Confidence Score: 5/5

The PR appears safe to merge with no concrete blocking or independently actionable issues identified.

OpenInfer is consistently registered across provider resolution, shared OpenAI-compatible dispatch, endpoint metadata, model metadata, and focused configuration tests.

Important Files Changed

Filename	Overview
litellm/llms/openai_like/providers.json	Registers OpenInfer with the shared OpenAI GPT configuration and chat-completions endpoint.
litellm/litellm_core_utils/get_llm_provider_logic.py	Adds default OpenInfer endpoint detection and environment-key resolution consistent with neighboring JSON providers.
litellm/types/utils.py	Adds the OpenInfer provider enum needed for provider lookup and dispatch.
model_prices_and_context_window.json	Adds OpenInfer model context, capability, and zero-cost metadata without an established changed-code defect.
tests/test_litellm/llms/openai_like/test_openinfer_provider.py	Covers provider registration, JSON configuration, prefixed routing, environment overrides, endpoint detection, and URL generation.

_{Reviews (1): Last reviewed commit: "feat(openinfer): add OpenInfer as OpenAI..." | Re-trigger Greptile}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[codspeed-hq]

Merging this PR will not alter performance

✅ 31 untouched benchmarks

---

_{Comparing AJ-ing:feat/openinfer-provider (e644ed3) with main (0cd588a)}