Arize AX vs Kosmoy AI Observability
Arize AX
arize.comKosmoy AI Observability
kosmoy.comSide by side
| Figure | Arize AX | Kosmoy AI Observability |
|---|---|---|
| Price from | $50/mo | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 3 | 1 |
| Spec score · AI Agent Observability Tools | 8.3 (#12) | 7.2 (#29) |
| Evaluation | Agent-as-a-Judge learns from agent telemetry and creates scalable evaluations that surface unknown failures. | Production traces can be sampled into online evaluations, while offline evaluations run against datasets; failed evaluations link to their trace. |
| Purpose | Arize AX is a platform for continuous improvement of AI agents that turns production behavior into better agents. | Kosmoy records production model and agent traces, including retrieval, tool calls, guardrail decisions, latency, cost, evaluations and feedback. |
| Support | AX Free includes community troubleshooting support, AX Pro includes email support and AX Enterprise includes dedicated support. | Pricing proposals specify support coverage, architecture reviews, enablement and service-level requirements. |
Plans
In their own words
Arize AX
Arize AX is a platform for improving AI agents by turning production behavior into investigations, evaluations, and experiments. Signal surfaces important issues, helps identify causes, and prepares fixes for review. Managed Agents can investigate failing traces, fix repository bugs, automate recurring checks, or be created from scratch. Swarm Observability tracks status and performance across an agent swarm in real time. Agent-as-a-Judge uses telemetry to produce scalable evaluations that can surface unknown failures, while end-to-end experiments help validate changes. Integrations include OpenAI, Anthropic, Google GenAI, Amazon Bedrock, LangChain, LangGraph, LlamaIndex, CrewAI, and Vercel AI SDK; tracing follows OpenInference conventions and OpenTelemetry. AX Free costs nothing and includes 10 Signal issues/month, 25k trace spans/month, 1 GB ingestion/month, and 15-day retention. AX Pro costs $50 a month, with 25 Signal issues/month, 50k trace spans/month, 10 GB ingestion/month, and 30-day retention. Enterprise pricing is custom. Self-hosted deployment keeps observability data, authentication, APIs, and UI within customer infrastructure; air-gapped deployment is available.
Kosmoy AI Observability
Kosmoy AI Observability has no write-up on Specifiction yet; its figures are above.