Agent Observability & Evals
The Agent Observability & Evals segment of the agent economy: 16 companies, ranked by X followers.
| Company | Headcount | HC 3m | Traffic/mo | X followers | Last round | Category |
|---|---|---|---|---|---|---|
| AgentOps Observability and DevTool platform for AI agents | — | — | — | 21.3K | — | Agent Observability & Evals |
| Raindrop Sentry for AI Agents | 19 | ▲ 38.5% | 16.2K | 8,963 | — Series A | Agent Observability & Evals |
| Braintrust Evals and observability for AI products | 179 | ▼ -1.1% | 107.7K | 7,831 | — Series B | Agent Observability & Evals |
| Langfuse Open source LLM engineering platform | — | — | — | 6,726 | — | Agent Observability & Evals |
| Helicone LLM Observability for Developers | — | — | — | 5,724 | — | Agent Observability & Evals |
| Arize AI AI observability and evaluation (Phoenix) | 247 | ▲ 15.3% | 114.3K | 5,347 | $70M Series C | Agent Observability & Evals |
| Luciq (formerly Instabug) Agentic Observability Platform for Mobile | 194 | — | 16K | 4,193 | $46M Series B | Agent Observability & Evals |
| Patronus AI AI behavioral research lab building evaluations and environments for agents | 72 | ▲ 22.0% | 25.9K | 2,952 | $50M Series B | Agent Observability & Evals |
| Coval Simulation & Evaluation that scales voice and chat AI agents | 26 | ▼ -3.9% | 7,156 | 1,010 | — Funding round (lead: Norwest) | Agent Observability & Evals |
| Cekura Voice AI and Chat AI agents: Testing and Observability | 19 | ■ 0.0% | 46.1K | 525 | — Funding round (type undisclosed) | Agent Observability & Evals |
| Confident AI Production Monitoring & Evals for AI Agents | 11 | ▲ 37.5% | 47.3K | 490 | $2.2M Seed | Agent Observability & Evals |
| HoneyHive Observability and evals for AI agents | 18 | ■ 0.0% | 1,303 | 486 | $5.5M Seed | Agent Observability & Evals |
| Hamming AI Complete QA platform for voice agents | 20 | ▼ -9.1% | 4,855 | 374 | $3.8M Seed | Agent Observability & Evals |
| Bluejay Test, monitor, and improve your voice and chat AI agents | 16 | ▲ 6.7% | 10.9K | 217 | $4M Seed | Agent Observability & Evals |
| Simantic Firmware simulation for AI agents | 6 | ▲ 50.0% | 1,081 | — | — | Agent Observability & Evals |
| Galileo AI reliability, evals and guardrails for agents | 125 | ▼ -3.1% | 83.9K | — | — Funding round (type undisclosed) | Agent Observability & Evals |
Observability and DevTool platform for AI agents
- HC
- —
- 3m
- —
- X
- 21.3K
Sentry for AI Agents
- HC
- 19
- 3m
- ▲ 38.5%
- X
- 8,963
Evals and observability for AI products
- HC
- 179
- 3m
- ▼ -1.1%
- X
- 7,831
Open source LLM engineering platform
- HC
- —
- 3m
- —
- X
- 6,726
LLM Observability for Developers
- HC
- —
- 3m
- —
- X
- 5,724
AI observability and evaluation (Phoenix)
- HC
- 247
- 3m
- ▲ 15.3%
- X
- 5,347
Agentic Observability Platform for Mobile
- HC
- 194
- 3m
- —
- X
- 4,193
AI behavioral research lab building evaluations and environments for agents
- HC
- 72
- 3m
- ▲ 22.0%
- X
- 2,952
Simulation & Evaluation that scales voice and chat AI agents
- HC
- 26
- 3m
- ▼ -3.9%
- X
- 1,010
Voice AI and Chat AI agents: Testing and Observability
- HC
- 19
- 3m
- ■ 0.0%
- X
- 525
Production Monitoring & Evals for AI Agents
- HC
- 11
- 3m
- ▲ 37.5%
- X
- 490
Observability and evals for AI agents
- HC
- 18
- 3m
- ■ 0.0%
- X
- 486
Complete QA platform for voice agents
- HC
- 20
- 3m
- ▼ -9.1%
- X
- 374
Test, monitor, and improve your voice and chat AI agents
- HC
- 16
- 3m
- ▲ 6.7%
- X
- 217
Firmware simulation for AI agents
- HC
- 6
- 3m
- ▲ 50.0%
- X
- —
AI reliability, evals and guardrails for agents
- HC
- 125
- 3m
- ▼ -3.1%
- X
- —
Top movers in category
- Simantic▲ 50.0%
- Raindrop▲ 38.5%
- Confident AI▲ 37.5%
- Patronus AI▲ 22.0%
- Arize AI▲ 15.3%
FAQ
What are Agent Observability & Evals AI agents?+
Agent Observability & Evals covers companies building autonomous or semi-autonomous AI agents for this use case. We currently track 16 of them.
How is the Agent Observability & Evals list ranked?+
By default by X followers. Headcount growth comes from Clay enrichment; social metrics from the public X API. Missing data is shown as —.
How often is this updated?+
Weekly. Each company profile shows its own last-verified date.