dspy-weave
W&B Weave — Cloud Observability & Experiment Tracking for DSPy
Guide the user through setting up W&B Weave for tracing DSPy calls, tracking optimization experiments, and collaborating with team dashboards.
What is W&B Weave
Weave is Weights & Biases' LLM observability and experiment tracking product. It provides cloud-hosted dashboards for tracing function calls, comparing optimization runs, and sharing results across teams.
- Cloud-hosted: Dashboards at wandb.ai
- Manual instrumentation: Uses
@weave.op()decorator (not auto-instrument like Langtrace) - Team collaboration: shared projects, comments, and run comparisons
Key difference from Langtrace/Phoenix
Weave uses a manual decorator (@weave.op()) — you choose which functions to trace. Langtrace and Phoenix auto-instrument all DSPy calls. This gives Weave more control over what gets tracked but requires more setup.
When to use Weave
Use Weave when:
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