Best Weights & Biases Alternatives in 2026

#1 alternative

Langfuse

Open-source LLM observability and evaluation

#2 alternative

Vellum

Build, evaluate, and deploy LLM apps and agents with confidence.

#3 alternative

Dify

Open-source platform for building production-ready LLM apps and agents.

#4 alternative

Helicone

Open-source LLM observability and AI gateway in one line of code.

#5 alternative

Braintrust

Eval-first evaluation and observability platform for AI applications.

#6 alternative

Portkey

Open-source AI gateway and control plane for production Gen AI.

#7 alternative

SuperCompress

Query-aware prompt compression that cuts LLM input tokens by roughly 60% before inference.

#8 alternative

GitHub Copilot

GitHub Copilot is an AI-powered coding assistant that works across multiple environments including IDEs, terminals, and GitHub itself

#9 alternative

Replit AI

Replit AI is an AI-powered coding platform that turns natural language into apps and websites, integrated into the Replit development environment

#10 alternative

Tabnine

Tabnine is an AI coding assistant that provides inline code completions, in-IDE chat, and agentic workflows with a focus on privacy and enterprise control

#11 alternative

Cursor

AI-native code editor with agents, full-codebase context, and multi-model support

#12 alternative

Trae

ByteDance's AI-native IDE that pairs a VS Code-style editor with autonomous coding agents.