Product coverage
Traces
Datasets
Evals
Optimise
Train
Serve
Overmind
Langfuse
Langfuse describes fine-tuning as an export: trace data leaves for external tools. Overmind is one of the places it can go, connector included.
Which one fits you
Decision tree
Question 1 of 3, Is your agent in production, logging real runs?
Is your agent in production, logging real runs?
Three of the seven verdicts here end at Langfuse. An MIT licence and regional data residency are two things Overmind has no answer to.
Product comparison
| Overmind | Langfuse | |
|---|---|---|
| Licence | Commercial. Trained weights are yours | MIT, entire product, no usage limits |
| Self-hosting | Platform is cloud. Trained weights run anywhere | Whole platform, free forever. Helm and Terraform |
| Fine-tuning | LoRA or full, hyperparameters recommended from your data | None. Data exports for external tools |
| Model serving | OpenAI-compatible endpoint, weights downloadable | None. Playground and judges use your API keys |
| Prompt improvement | Optimiser ships scored diffs as PRs | Versioned prompts, instant rollbacks, manual editing |
| Proof before switching | Benchmark vs production model, overlap-checked | Experiments on datasets, app-level |
| Data residency | Cloud. SOC2 and HIPAA-ready pathways on Enterprise | Isolated EU, US, Japan, and HIPAA regions |
| Pricing | Free / Pro + credits. Ingest never credit-gated | Free 50k units/mo; $29, $199, $2,499 tiers; self-host $0 |
Common questions
Is Overmind a replacement for Langfuse?
It does not have to be. The common pattern is Langfuse for observability, Overmind for the loop from its traces to datasets, evals, and a trained model, via the live import connector. Overmind ships its own tracing too, so starting fresh with one tool also works.
Does Langfuse do fine-tuning or serving?
No. As of August 2026 its docs describe exporting trace data for fine-tuning in external tools, and every model-touching feature uses your own provider API key. It observes and evaluates models; it does not train or host them.
Langfuse self-hosts for free. What does Overmind cost?
Free and Pro subscriptions plus credits for compute-heavy work: dataset analysis, evals, optimisation, training, serving. Trace ingest never draws credits. If the requirement is a free self-hosted trace store, Langfuse wins that outright; Overmind's pitch is the loop, not the store.
Can I migrate gradually?
Yes. Backfill via the connector while your instrumentation stays put, and curate datasets from imported traces. Add Overmind's OTel endpoint alongside Langfuse's later if you want live scoring. No rewrite at any step.