LiteLLM vs LangSmith
Facts come from each vendor's own pages; download numbers are the headline package of each tool in 2026-W40.
| Fact | LiteLLM | LangSmith |
|---|---|---|
| PyPI downloads, week (rank) | 22,710,323 (#1)litellm | 18,866,051 (#2)langsmith |
| npm downloads, week (rank) | no npm SDK | 8,568,634 (#1)langsmith |
| GitHub stars (rank) | 60,298 (#1)BerriAI/litellm | 1,069 (#32)langchain-ai/langsmith-sdk |
| PyPI series (12 weeks) | ||
| npm series (12 weeks) | no npm SDK | |
| Categories | Gateways with observability | Tracing & observability, Evaluation, Prompt management |
| Status | Generally available | Generally available |
| Licence | MIT (open core) | Proprietary |
| Self-host | Yes | Enterprise only |
| OpenTelemetry | Exporter / bridge | Native (OTLP) |
| Pricing model | contact | per-seat |
| Entry price | Contact sales; Open Source $0 self-hosted; Enterprise is annual, sized to usage, price not published ('Talk to sales') | $39/seat/mo; Plus plan per seat per month then pay-as-you-go traces (10k base traces/month included); Developer plan is $0 with 1 seat and 5k base traces |
| Free tier | Yes | Yes |
| Measurability | Measured (mapped SDK packages) | Measured (mapped SDK packages) |
| Sources | pricing · licence · self-host · OTel (checked 2026-10-07) | pricing · licence · self-host · OTel (checked 2026-10-07) |
More downloads means more package installs (including CI and dependencies), not a better product. See the methodology.