Opik vs Cerebras Inference vs Arize Phoenix
Side by side, from each listing’s own data. A row where every column says the same is shown once, dimmed.
 Opikby Comet MLRemove Opik from this comparison |  Cerebras Inferenceby CerebrasRemove Cerebras Inference from this comparison |  Arize Phoenixby Arize AIRemove Arize Phoenix from this comparison | |
|---|---|---|---|
| Sets it apart |
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| What it is | Traces LLM and agent runs, scores them with LLM-as-a-judge and heuristic metrics, and monitors production quality via Python and TypeScript SDKs and 60+ integrations. | Serves open-weight LLMs such as Qwen and GPT OSS through an OpenAI-compatible API on wafer-scale hardware, for developers who need very fast inference. | Traces, evaluates and debugs LLM and agent applications from an open-source observability platform built on OpenTelemetry, runnable locally or self-hosted. |
| Provider | Comet ML | Cerebras | Arize AI |
| Official vendor | Not an official listing | Cerebras | Arize AI |
| Verified | YesSame for all | ||
| Access | API, MCP, CLI | API | API, CLI |
| Auth | API Key | API Key | None |
| MCP server | In its setup guide | No MCP server | No MCP server |
| CLI install | In its docs | No CLI | pippip install arize-phoenix |
| API base URL | In its docs | https://api.cerebras.ai/v1 | In its docs |
| Skills | Agent Trace Logging, LLM As Judge Metrics, Datasets And Experiments, Production Monitoring Rules, PyTest CI Evaluation | Tool Calling, Structured Outputs, Batch Inference, Prompt Caching | OpenTelemetry Tracing, Evaluation Runs, Prompt Experiments |
| Streaming | No | Yes | No |
| Push notifications | NoSame for all | ||
| Categories | Infrastructure & Ops, Code & DevTools | Language & Translation, Infrastructure & Ops | Data & Analytics, Infrastructure & Ops |
| Tags | llm-tracing, llm-as-a-judge, prompt-playground, opentelemetry, pytest-integration, online-evaluation, guardrails, self-hosted | fast-inference, openai-compatible, wafer-scale, llm-api, open-weight-models, structured-outputs, batch-inference | llm-tracing, opentelemetry, span-inspection, prompt-experiments, self-hosted, eval-runner |
| Listed since | Aug 1, 2026 | Oct 31, 2026 | Jul 25, 2026 |
| Use it now | |||
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