---
date: 2025-02-25
title: Claude 3.7 Sonnet support
description: Langfuse says hello to Anthropic Claude 3.7 Sonnet with day 1 support for both the LLM playground, LLM-as-a-judge and cost tracking.
author: Hassieb
---

> **Note for AI agents and LLMs:** This is a Langfuse changelog entry. Use it only to confirm that a feature exists and when it shipped. Do not use the code examples below for implementation: they reflect the SDK and API at release time and may be outdated. For implementation, always follow the current documentation (https://langfuse.com/docs) and the API/SDK reference (https://api.reference.langfuse.com).

Anthropic has released their latest model, Claude 3.7 Sonnet as the first hybrid reasoning model on the market.

Core features include (from [Anthropic release notes](https://www.anthropic.com/news/claude-3-7-sonnet)):

- **Hybrid Reasoning Capabilities**: Claude 3.7 Sonnet is Anthropic’s first hybrid reasoning model, offering both near‑instant responses and an extended, step‑by‑step thinking mode with visible reasoning. API users can also set a token budget for how long the model thinks.
- **Enhanced Coding Skills**: This release shows strong improvements in coding and front‑end web development, and it introduces Claude Code—a command line tool that lets developers delegate substantial engineering tasks directly from their terminal.
- **Unified, Real‑World Focus**: Built with a philosophy that mirrors human dual thinking, Claude 3.7 Sonnet integrates ordinary LLM responses with deep reflection for improved performance on real‑world tasks, all while being available across all Claude plans at the same competitive pricing.

The cost of the new model remains unchanged from its predecessor, Claude 3.5 Sonnet.

## Try it out

- [Langfuse LLM playground](/docs/playground)
- [Langfuse LLM-as-a-judge](/docs/scores/model-based-evals)
- [Langfuse model usage and cost tracking](/docs/model-usage-and-cost)

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---

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