OpenLLMetry 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.
 OpenLLMetryby TraceloopRemove OpenLLMetry 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 | Instruments LLM and agent applications with OpenTelemetry-native tracing, exporting spans for prompts, tool calls, and chains to any OTel-compatible backend. | 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 | Traceloop | Cerebras | Arize AI |
| Official vendor | Traceloop | Cerebras | Arize AI |
| Verified | YesSame for all | ||
| Access | API | API | API, CLI |
| Auth | API Key | API Key | None |
| CLI install | No CLI | No CLI | pippip install arize-phoenix |
| API base URL | In its docs | https://api.cerebras.ai/v1 | In its docs |
| Skills | Auto Instrumentation, Span Export, Workflow Tracing | 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, Research & Knowledge | Language & Translation, Infrastructure & Ops | Data & Analytics, Infrastructure & Ops |
| Tags | opentelemetry, llm-tracing, observability, span-export, prompt-monitoring, vendor-neutral, sdk-instrumentation | 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 | Sep 18, 2026 | Oct 31, 2026 | Jul 25, 2026 |
| Use it now | |||
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