Day 0 Support: GPT-6 Astra

LiteLLM now supports gpt-6-astra, OpenAI's next major model. Route traffic to it through the LiteLLM AI Gateway with the same config you use for every other OpenAI model.

LiteLLM now supports gpt-6-astra, OpenAI's next major model. Route traffic to it through the LiteLLM AI Gateway with the same config you use for every other OpenAI model.

LiteLLM now offers muse-spark-1.3 and muse-spark-1.3-contributor on day 0, through the meta/ route on the Meta Model API. Meta ships 1.3 today in Muse Code and the Model API, tuned for long-horizon agentic and coding work, and reports roughly 20% fewer tool calls and 25% fewer tokens than 1.2 internally.

LiteLLM now supports gemini-3.8-flash on day 0, on both Google AI Studio (gemini/) and Vertex AI (vertex_ai/). Google calls its newest Flash model its primary general-purpose model, with gains over 3.7 Flash on long-horizon software engineering, agentic tasks, and multi-step reasoning, and on DeepSWE v1.1 it outperforms most larger frontier models at a fraction of the cost.

LiteLLM supports Claude Fable 5.1 on Day 0 across Anthropic, Bedrock, Gemini Enterprise Agent Platform, and Azure, with spend, rate limits, fallbacks, and logging in one place.

LiteLLM now supports gemini-3.7-flash on day 0, on both Google AI Studio (gemini/) and Vertex AI (vertex_ai/). Google's newest Flash model delivers faster responses with meaningfully better quality than 3.6 Flash and scores higher on complex multi-step agentic, coding, and reasoning benchmarks.

LiteLLM now supports Claude Opus 5 on Day 0. Use it across Anthropic, Azure, Vertex AI, and Bedrock through the LiteLLM AI Gateway. Call it with the same OpenAI-compatible request you already use, and track spend, rate limits, and logging in one place.

LiteLLM now supports the GPT-5.6 family. Route traffic to OpenAI's newest frontier models through the LiteLLM AI Gateway with no code changes.

LiteLLM now supports Claude Sonnet 5 on Day 0. Use it across Anthropic, Azure, Vertex AI, and Bedrock through the LiteLLM AI Gateway. Call it with the same OpenAI-compatible request you already use, and track spend, rate limits, and logging in one place.

LiteLLM now supports Claude Fable 5 on Day 0. Use it across Anthropic, Azure, Vertex AI, and Bedrock through the LiteLLM AI Gateway. Call it with the same OpenAI-compatible request you already use, and track spend, rate limits, and logging in one place.
LiteLLM now supports Claude Opus 4.8 on Day 0. Use it across Anthropic, Azure, Vertex AI, and Bedrock through the LiteLLM AI Gateway. Call it with the same OpenAI-compatible request you already use, and track spend, rate limits, and logging in one place.
LiteLLM now supports gemini-3.5-flash with full day 0 support!
If you only want cost tracking, you need no change in your current LiteLLM version. But if you want support for new features introduced with this release, namely thinking levels, strict function-call IDs, and thought signatures, use v1.87.0-dev.1 or above.
LiteLLM now supports GPT-5.5 and GPT-5.5 Pro on Day 0. Route traffic to OpenAI's latest frontier model through the LiteLLM AI Gateway with no code changes.
LiteLLM now supports gemini-3.1-flash-lite-preview with full day 0 support!
If you only want cost tracking, you need no change in your current Litellm version. But if you want the support for new features introduced along with it like thinking levels, you will need to use v1.80.8-stable.1 or above.
LiteLLM now supports GPT-5.3-Codex on Day 0, including support for the new assistant phase metadata on Responses API output items.
LiteLLM now supports gemini-3.1-pro-preview and all the new API changes along with it.
LiteLLM now supports gemini-3-flash-preview and all the new API changes along with it.
If you only want cost tracking, you need no change in your current Litellm version. But if you want the support for new features introduced along with it like thinking levels, you will need to use v1.80.8-stable.1 or above.
This guide covers common questions and best practices for using gemini-3-pro-preview with LiteLLM Proxy and SDK.