Phoebe vs Selector AI
Which Observability AI tool is better in 2026?
Phoebe
Building an AI-driven immune system for software, using swarms of AI agents that continuously
Selector AI
AI observability and network intelligence using LLMs, knowledge graphs and causal reasoning
Side-by-side
Phoebe is the more established option (raised $17M); pricing is comparable on both sides.
| Metric | Phoebe | Selector AI |
|---|---|---|
| Taglinei | Building an AI-driven immune system for software, using swarms of AI agents that continuously | AI observability and network intelligence using LLMs, knowledge graphs and causal reasoning |
| Foundedi | 2024 | 2019🏆 |
| HQi | — | Santa Clara, United States |
| Employeesi | 11-50 | 51-200🏆 |
| Neuron scorei | 52 | 61🏆 |
| Total fundingi | $17M🏆 | Undisclosed |
| Latest roundi | Seed | Venture · Feb 2026 |
| Valuationi | — | $375M🏆 |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed |
| Free plani | ✓ | ✗ |
| Free triali | ✓ | ✗ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Free | Enterprise · Contact sales |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Phoebe and Selector AI.
| Capability | Phoebe | Selector AI |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Phoebe
- Has raised more capital ($17M vs Undisclosed)
- Offers a free plan
- Offers a free trial
- Newer company (2024)
🔵 Strengths of Selector AI
- Higher Neuron score (61 vs 52)
- More mature (2019)
Which should you choose?
Choose Selector AI if price matters most — it starts at Enterprise · Contact sales, 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 Phoebe if you want the most established option — it has raised $17M, 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
Phoebe vs Selector AI — which is better?
It depends on your priority. Phoebe has raised more capital and is the more established option; Selector AI has broader feature depth. See the side-by-side table above.
Is Phoebe cheaper than Selector AI?
No — Selector AI's cheapest paid plan is Enterprise · Contact sales, while Phoebe's is Free.
Do Phoebe and Selector AI offer free plans?
Phoebe: Yes, has a free plan. Selector AI: Paid only.
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