Confident AI vs Sifflet
Which Observability AI tool is better in 2026?
Confident AI
DeepEval-powered LLM evaluation and observability
Sifflet
AI-ready data observability platform to monitor pipelines, quality, and lineage end to end
Side-by-side
Sifflet is the more established option (raised $35.8M), but Confident AI is cheaper to start.
| Metric | Confident AI | Sifflet |
|---|---|---|
| Taglinei | DeepEval-powered LLM evaluation and observability | AI-ready data observability platform to monitor pipelines, quality, and lineage end to end |
| Foundedi | 2024 | 2021🏆 |
| HQi | San Francisco, US | Paris, FR |
| Employeesi | 1-10 | 51-200🏆 |
| Neuron scorei | 76🏆 | 65 |
| Total fundingi | $2.2M | $35.8M🏆 |
| Latest roundi | Seed · Aug 2025 | Series A · Mar 2023 |
| Valuationi | —🏆 | — |
| Cheapest paid plani | —🏆 | Pricing not disclosed |
| Free plani | ✓ Free Tier | ✗ |
| Free triali | ✓ | ✓ |
| Top tier pricei | Enterprise · Contact sales | Pricing not disclosed |
| Pricing summaryi | 2 published plans | Free trial |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Confident AI and Sifflet.
| Capability | Confident AI | Sifflet |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✓ |
| Webhooks | ✓ | ✗ |
| OAuth 2.0 | ✓ | ✗ |
| SDK languages | 2 (python, rest) | — |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✓ | ✗ |
🟢 Strengths of Confident AI
- Higher Neuron score (76 vs 65)
- Offers a free plan
- Newer company (2024)
🔵 Strengths of Sifflet
- Has raised more capital ($35.8M vs $2.2M)
- More mature (2021)
Which should you choose?
Choose Confident AI if price matters most — it starts at Free, 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 Sifflet if you want the most established option — it has raised $35.8M, 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.
💸 Deals
Confident AI free tier — DeepEval evaluations
Confident AI's free tier lets you run LLM evaluations with DeepEval, track test runs, and monitor production traces.
Frequently asked questions
Confident AI vs Sifflet — which is better?
It depends on your priority. Confident AI is the leaner option; Sifflet has broader feature depth. See the side-by-side table above.
Is Confident AI cheaper than Sifflet?
Yes — Confident AI's cheapest paid plan is Free, while Sifflet's is Free trial.
Do Confident AI and Sifflet offer free plans?
Confident AI: Yes, has a free plan. Sifflet: Free trial only.
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