LangWatch vs Observe
Which Observability AI tool is better in 2026?
LangWatch
Platform for LLM evaluations, agent testing and observability
Observe
AI-native observability platform built on a data lake to replace Splunk and Datadog
Side-by-side
Observe is the more established option (raised $270M); pricing is comparable on both sides.
| Metric | LangWatch | Observe |
|---|---|---|
| Taglinei | Platform for LLM evaluations, agent testing and observability | AI-native observability platform built on a data lake to replace Splunk and Datadog |
| Foundedi | 2023 | 2017🏆 |
| HQi | Amsterdam, NL | San Mateo, US |
| Employeesi | 1-10 | 201-500🏆 |
| Neuron scorei | 60 | 73🏆 |
| Total fundingi | $1.1M | $270M🏆 |
| Latest roundi | Pre-Seed · Jan 2024 | Series C · Jul 2025 |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed |
| Free plani | ✓ | ✗ |
| Free triali | ✗ | ✓ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Open source | Free trial |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for LangWatch and Observe.
| Capability | LangWatch | Observe |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✗ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of LangWatch
- Offers a free plan
- Newer company (2023)
🔵 Strengths of Observe
- Has raised more capital ($270M vs $1.1M)
- Higher Neuron score (73 vs 60)
- Offers a free trial
- More mature (2017)
Which should you choose?
Choose Observe if price matters most — it starts at Free trial, which is friendlier for teams watching burn. Both AI Observability tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Observe if you want the most established option — it has raised $270M, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
LangWatch vs Observe — which is better?
It depends on your priority. LangWatch is the leaner option; Observe has broader feature depth. See the side-by-side table above.
Is LangWatch cheaper than Observe?
No — Observe's cheapest paid plan is Free trial, while LangWatch's is Open source.
Do LangWatch and Observe offer free plans?
LangWatch: Yes, has a free plan. Observe: Free trial only.
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