OpenLIT vs Opik

OpenLIT vs Opik
Fact	OpenLIT	Opik
Language	TypeScript	Python
Licence	Apache-2.0	Apache-2.0
Stars	2.8k	22k
Latest	openlit-2.1.0	2.2.92
Last push	2026-10-05	2026-10-06
Release cadence	about 8 days between releases	about 1 day between releases
Active contributors	46 commit authors on the default branch in the last 90 days	50+ commit authors on the default branch in the last 90 days
Flags	none	none

How they relate

Both replace LangSmith. Alternatives to LangSmith →
PartialOpenLITOpenTelemetry-native traces and metrics for LLM apps, GPUs and vector databases, with prompt management.
Full replacementOpikTracing, datasets, experiments and LLM-as-a-judge evaluations.

openlit-2.1.02026-09-10openlit: 2.1.0
openlit-2.0.02026-08-28openlit: 2.0.0
otel-gpu-collector-0.0.82026-08-26otel-gpu-collector: 0.0.8
ts-1.15.02026-08-03Add per-evaluation-type threshold scores and API-key-authenticated create/update endpoints for offline evaluation types…
py-1.45.02026-08-03Aligned offline/SDK evaluations with tenant-configured evaluation types including rule-engine context resolution and pe…

2.2.922026-10-06[OPIK-8566] [BE] feat: free-form SQL post-run check, behind off/audit/enforce
2.2.912026-10-06[OPIK-8515] [SDK] fix: explicit update_current_span/trace output wins over @track's captured return value
2.2.902026-10-05[OPIK-8575] [FE] feat: offer max reasoning effort on OpenAI keys set to the Responses API
2.2.892026-10-05[NA] [HELM] [DOCS] fix: bump clickhouse-backup to 2.7.4 for object-disk backups
2.2.882026-10-02[OPIK-7965] [FE] feat: render compare prompts as messages and store prompt templates

unsigned The latest release, openlit-2.1.0, carries no signature GitHub could verify.

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✓ signed The latest release, 2.2.92, carries a signature GitHub verified.

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