Cognition vs Langfuse
Which Developer Tools AI tool is better in 2026?
Cognition
Applied AI lab building Devin, the AI software engineer.
Langfuse
Open source LLM engineering platform for debugging, analyzing, and iterating on LLM applications
Side-by-side
| Cognition | Langfuse | |
|---|---|---|
| Tagline | Applied AI lab building Devin, the AI software engineer. | Open source LLM engineering platform for debugging, analyzing, and iterating on LLM applications |
| Founded | 2023 | 2023 |
| HQ | San Francisco, US | DE |
| Employees | 11-50 | 11-50 |
| Total funding | $1.1B | Undisclosed |
| Latest round | Series C · Sep 2025 | — |
| Valuation | $10.2B | — |
| Cheapest paid plan | Pro · $20/mo | Core · $29/mo |
| Free plan | ✓ Free | ✓ Hobby |
| Free trial | ✗ | ✗ |
| Top tier price | Max · $200/mo | Pro · $199/mo |
| Pricing summary | 5 published plans | 4 published plans |
| Categories |
Capability matrix
Developer-facing capabilities and access signals for Cognition and Langfuse.
| Capability | Cognition | Langfuse |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✓ |
| Free trial | ✗ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Cognition
- Has raised more capital ($1.1B vs Undisclosed)
- Higher Neuron score (66 vs 31)
🔵 Strengths of Langfuse
- Lower starting price ($29/mo)
Which should you choose?
Choose Langfuse if price matters most — it starts at Free · From $29/mo, which is friendlier for teams watching burn. Both AI Developer Tools tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Cognition if you want the most established option — it has raised $1.1B, 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
Cognition vs Langfuse — which is better?
It depends on your priority. Cognition has raised more capital and is the more established option; Langfuse has broader feature depth. See the side-by-side table above.
Is Cognition cheaper than Langfuse?
Yes — Cognition's cheapest paid plan is Pro · $20/mo, while Langfuse's is Core · $29/mo.
Do Cognition and Langfuse offer free plans?
Cognition: Yes, has a free plan. Langfuse: Yes, has a free plan.
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