# Arize Phoenix vs Opik

| Attribute | Arize Phoenix | Opik |
|---|---|---|
| **vioscaleAI score** | 53.7 (51% (medium)) | 52.8 (29% (low)) |
| activity.commits_last_30d | 100 | - |
| adoption.dependent_repos | 0 | - |
| adoption.github_stars | 11,858 | - |
| content.faq | `[{"answer":"Phoenix provides OpenTelemetry-based instrumentation for LLM applications, AI-powered evaluation of model outputs and retrieval quality, and systematic prompt management with versioning. It supports both self-hosted and cloud deployment and integrates with major LLM frameworks and development tools. It is indexed under Llm Observability.","source":"https://phoenix.arize.com","question":"What is Arize Phoenix?","confidence":0.6},{"answer":"Yes. Arize Phoenix can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://phoenix.arize.com","question":"Can Arize Phoenix be self-hosted?","confidence":0.6},{"answer":"We have confirmed 8 integrations for Arize Phoenix, including LlamaIndex, OpenAI, Anthropic, AWS Bedrock, Vertex AI, Claude Code, Cursor and OpenLLMetry. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://phoenix.arize.com","question":"What does Arize Phoenix integrate with?","confidence":0.6}]` | `[{"answer":"Opik logs AI agent operations and LLM calls with automated evaluation workflows, helping teams debug, test, and monitor AI systems throughout development and production. It is indexed under Llm Observability.","source":"https://www.comet.com/site/products/opik","question":"What is Opik?","confidence":0.6},{"answer":"Opik offers a free tier, so you can start without paying. Pricing changes often, so verify at source before relying on it.","source":"https://www.comet.com/site/products/opik","question":"Is Opik free?","confidence":0.6},{"answer":"Opik supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://www.comet.com/site/products/opik","question":"What platforms does Opik support?","confidence":0.6},{"answer":"Yes. Opik can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://www.comet.com/site/products/opik","question":"Can Opik be self-hosted?","confidence":0.6}]` |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true,"on_prem":true,"self_hosted":true}` |
| description.long | A self-hosted platform that traces and evaluates language model application behavior using OpenTelemetry instrumentation, enabling teams to debug, optimize, and monitor LLM performance. | A comprehensive observability and evaluation platform for debugging, testing, and monitoring LLM applications through detailed execution traces, prompt experimentation, and production dashboards. |
| features.capabilities | `{"pricing_model":"free_open_source","architecture_model":"open_source_self_hosted","production_ab_testing_of_system_prompts":true,"token_cost_and_latency_waterfall_charts":true,"prompt_playground_and_in_dashboard_replay":true,"multi_step_agentic_workflow_distributed_tracing":true,"opentelemetry_openllmetry_native_export_support":true,"native_integration_with_langchain_and_llamaindex":true}` | `{"pricing_model":"free_open_source","architecture_model":"open_source_self_hosted","mit_or_apache_permissive_oss_license":true,"token_cost_and_latency_waterfall_charts":true,"pii_redaction_and_prompt_content_masking":true,"prompt_playground_and_in_dashboard_replay":true,"multi_step_agentic_workflow_distributed_tracing":true,"opentelemetry_openllmetry_native_export_support":true,"user_feedback_score_api_for_thumbs_up_down_tags":true}` |
| integrations.count | 11 | 1 |
| integrations.list | `[{"name":"LlamaIndex"},{"name":"OpenAI"},{"name":"Anthropic"},{"name":"AWS Bedrock"},{"name":"Vertex AI"},{"name":"Claude Code"},{"name":"Cursor"},{"name":"OpenLLMetry"},{"name":"OpenTelemetry","native":true},{"name":"OpenInference"},{"name":"Gemini","native":true,"category":"llm"},{"name":"Google Vertex AI","native":true},{"name":"Google Gemini","native":true},{"name":"Together AI","native":true},{"name":"Fireworks","native":true},{"name":"NVIDIA NIM","native":true},{"name":"LiteLLM","native":true},{"name":"LangChain","native":true},{"name":"Traceloop","native":true}]` | `[{"name":"OpenTelemetry"}]` |
| language.primary | Python | - |
| platform.support | `{"cli":true,"web":true}` | `{"web":true}` |
| pricing | `{"type":"open_source","summary":"Open-source and free","freeTier":true,"sourceUrl":"https://phoenix.arize.com","retrievedAt":"2026-09-13T20:03:21.729Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://www.comet.com/site/products/opik","retrievedAt":"2026-09-29T14:58:30.940Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| pricing.transparent | - | no |
| release.history | `[{"url":"https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-v20.22.0","date":"2026-10-15T07:02:33Z","type":"stable","version":"arize-phoenix-v20.22.0"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-v20.21.4","date":"2026-10-14T16:12:17Z","type":"stable","version":"arize-phoenix-v20.21.4"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-v20.21.3","date":"2026-10-14T03:38:44Z","type":"stable","version":"arize-phoenix-v20.21.3"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-v20.21.2","date":"2026-10-13T16:04:09Z","type":"stable","version":"arize-phoenix-v20.21.2"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-v20.21.1","date":"2026-10-12T21:09:18Z","type":"stable","version":"arize-phoenix-v20.21.1"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-sqlean-v0.2.0","date":"2026-10-13T03:17:51Z","type":"stable","version":"arize-phoenix-sqlean-v0.2.0"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-v20.21.0","date":"2026-10-11T14:23:03Z","type":"stable","version":"arize-phoenix-v20.21.0"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-evals-v3.9.2","date":"2026-10-09T15:27:08Z","type":"stable","version":"arize-phoenix-evals-v3.9.2"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/%40arizeai/phoenix-mcp%404.3.16","date":"2026-10-09T22:00:58Z","type":"stable","version":"@arizeai/phoenix-mcp@4.3.16"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/%40arizeai/phoenix-client%407.16.1","date":"2026-10-09T22:00:52Z","type":"stable","version":"@arizeai/phoenix-client@7.16.1"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/%40arizeai/phoenix-cli%401.18.8","date":"2026-10-09T22:00:55Z","type":"stable","version":"@arizeai/phoenix-cli@1.18.8"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-v20.20.0","date":"2026-10-09T00:35:00Z","type":"stable","version":"arize-phoenix-v20.20.0"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-evals-v3.9.1","date":"2026-10-08T03:15:45Z","type":"stable","version":"arize-phoenix-evals-v3.9.1"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-v20.19.0","date":"2026-10-01T22:59:10Z","type":"stable","version":"arize-phoenix-v20.19.0"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-v20.18.0","date":"2026-09-30T23:04:10Z","type":"stable","version":"arize-phoenix-v20.18.0"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-v20.17.0","date":"2026-09-30T22:10:01Z","type":"stable","version":"arize-phoenix-v20.17.0"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/%40arizeai/phoenix-mcp%404.3.15","date":"2026-09-30T23:35:39Z","type":"stable","version":"@arizeai/phoenix-mcp@4.3.15"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/%40arizeai/phoenix-client%407.16.0","date":"2026-09-30T23:35:33Z","type":"stable","version":"@arizeai/phoenix-client@7.16.0"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/%40arizeai/phoenix-cli%401.18.7","date":"2026-09-30T23:35:36Z","type":"stable","version":"@arizeai/phoenix-cli@1.18.7"},{"url":"https://github.com/Arize-ai/phoenix/releases/tag/%40arizeai/phoenix-mcp%404.3.14","date":"2026-09-29T19:17:12Z","type":"stable","version":"@arizeai/phoenix-mcp@4.3.14"}]` | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40arizeai%2Fphoenix-config&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Llm Observability)

| Capability | Arize Phoenix | Opik |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Architecture model | Open source self hosted | Open source self hosted |
| Token cost and latency waterfall charts | ✓ | ✓ |
| Opentelemetry openllmetry native export support | ✓ | ✓ |
| Prompt playground and in dashboard replay | ✓ | ✓ |
| Multi step agentic workflow distributed tracing | ✓ | ✓ |
| User feedback score API for thumbs up down tags | - | ✓ |
| Pii redaction and prompt content masking | - | ✓ |
| Production ab testing of system prompts | ✓ | - |
| Automated anomaly detection for rate limits | - | - |
| Native integration with langchain and llamaindex | ✓ | - |
| SOC2 type ii | - | - |
| Mit or apache permissive oss license | - | ✓ |
| Pricing model | Free open source | Free open source |

*Source: vioscaleAI. Generated 2026-10-16T19:28:59.809Z. "-" = undocumented, not absent.*