Helicone vs LangSmith
Helicone and LangSmith are both AI Platforms tools in our directory. This side-by-side comparison covers pricing, user ratings, supported platforms, key features and open-source status so you can decide which one fits your needs.
Side-by-side comparison
| Attribute | Helicone | LangSmith |
|---|---|---|
| Vendor | Helicone | LangChain |
| Rating | ★ 4.5 | ★ 4.4 |
| Pricing | Freemium | Freemium |
| Platforms | Web, API, Proxy | Web, API |
| Key features | Drop-in proxy for OpenAI-compatible APIs, Cost, latency and token dashboards, Response caching | Full trace visibility for chains & agents, Dataset + evaluation workflows, Prompt playground with versioning |
| Headquarters | San Francisco, USA | San Francisco, USA |
| Founded | 2022 | 2023 |
| Open source | Yes | No |
Key differences
- Helicone has a higher user rating (4.5★ vs 4.4★).
- Both Helicone and LangSmith use a Freemium model.
- Helicone is open source (its code is public), while LangSmith is proprietary.
- Helicone runs on Web, API, Proxy; LangSmith runs on Web, API.
Frequently asked questions
Is Helicone or LangSmith better?
By user rating, Helicone scores higher (4.5★ vs 4.4★). Both are capable AI Platforms tools, so review the feature comparison for your use case.
Which is cheaper, Helicone or LangSmith?
Both Helicone and LangSmith use a Freemium pricing model.
Are Helicone and LangSmith open source?
Helicone is open source, while LangSmith is proprietary.