Comet Opik

Pick when you already live in Comet or want OSS Opik + optional cloud. Langfuse remains cheaper OSS default…

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Pick when you already live in Comet or want OSS Opik + optional cloud. Langfuse remains cheaper OSS default; Braintrust for eval-product teams. Strengths: OSS tracing+evals with Comet gravity; Good agent/RAG debug UX; Self-host escape hatch.

Overall

8.0

curated_estimate

confidence: high · as of 2026-09-14

Capability fit

8.2

Price / performance

8.5

Latency / reliability

8.0

Developer & agent DX

8.4

Privacy / data retention

7.8

Lock-in risk (higher = worse)

4.0

Maturity / track record

8.0

Lock-in risk: higher = more lock-in (worse). Overall already inverts this dimension.

Sources: Comet Opik: https://www.comet.com/site/products/opik/ · Opik GitHub: https://github.com/comet-ml/opik · Comet pricing: https://www.comet.com/site/pricing/

Pick when you already live in Comet or want OSS Opik + optional cloud. Langfuse remains cheaper OSS default; Braintrust for eval-product teams.

Strengths

· OSS tracing+evals with Comet gravity
· Good agent/RAG debug UX
· Self-host escape hatch

Weaknesses

· Comet packaging can confuse Opik-only buyers
· Less eval-first than Braintrust/Confident
· Cloud retention limits on cheap tiers

Pricing notes

As of 2026-09-14: Opik OSS self-host free. Comet Cloud free tier + Pro Cloud ~$19/mo class with ~100k spans / 60-day retention (confirm live comet.com/site/pricing). Fits teams already on Comet ML experiment tracking.

Regions: global, usLast reviewed: 2026-09-14Status: active

Sourced pricing

Contract status unavailable · no_sourced_price. Single normalized $/1M: null. Machine list: /api/pricing?provider=comet-opik

No sourced SKU row. Notes above stay prose.

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