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Comparison · Analytics

Calibre vs OpenHouse

A side-by-side editorial comparison of Calibre and OpenHouse — release velocity, themes, recent moves, and the top alternatives to consider.

Calibre vs OpenHouse: at a glance

FeatureCalibreOpenHouse
SectorAnalyticsAnalytics
Velocity score6.35.0
Sparks · 30d10
Top themesweb-performance, mcp, coding-agents, rumdata lakehouse, iceberg, table maintenance, views
Last editorial update1d ago14h ago
WebsiteVisit →Visit →

What is Calibre?

Calibre MCP lets your coding agent read RUM and Lighthouse data, then fix the slow code

Calibre now ships a read-only MCP server that gives Claude Code, Cursor, Codex, Copilot, Claude and ChatGPT access to an account's RUM, CrUX and Synthetic data, included on every plan with nothing to install. It lands days after Test Agents moved to Chrome 156 and Lighthouse 13.6.0, which added audits for how AI agents read pages. Admins can disable MCP per organisation and revoke connections, and the Company-plan audit log records them.

Read the full Calibre trajectory →

What is OpenHouse?

OpenHouse records why table maintenance fails and adds timezone-aware retention.

OpenHouse landed Views M1 on October 30, with create, replace, list and delete over its commit-only engine behind database-scoped gating. On November 3 it shipped two operational changes: the Optimizer now stores a failure reason for each failed maintenance operation, and retention policies on string-date columns can use a timezone instead of UTC.

Read the full OpenHouse trajectory →

Calibre vs OpenHouse: editorial side-by-side

C
Calibre
ANALYTICS
6.3

Calibre MCP lets your coding agent read RUM and Lighthouse data, then fix the slow code

◆ Current state

Calibre now ships a read-only MCP server that gives Claude Code, Cursor, Codex, Copilot, Claude and ChatGPT access to an account's RUM, CrUX and Synthetic data, included on every plan with nothing to install. It lands days after Test Agents moved to Chrome 156 and Lighthouse 13.6.0, which added audits for how AI agents read pages. Admins can disable MCP per organisation and revoke connections, and the Company-plan audit log records them.

◆ Where it's heading

Calibre is turning its monitoring data into something agents act on rather than something people read in dashboards. The summer work on deployment markers, all-pages aggregates and the audit log built the context and governance an agent needs: which deploy, which page, who connected. Expect the remaining surface to follow the same path, with agents both querying performance and being measured by it.

◆ Prediction

The likely next step is write access or deploy-linked workflows over MCP, such as an agent opening a fix tied to a regression marker, since the current server is explicitly read-only and the launch frames fixing as the goal.

O
OpenHouse
ANALYTICS
5.0

OpenHouse records why table maintenance fails and adds timezone-aware retention.

◆ Current state

OpenHouse landed Views M1 on October 30, with create, replace, list and delete over its commit-only engine behind database-scoped gating. On November 3 it shipped two operational changes: the Optimizer now stores a failure reason for each failed maintenance operation, and retention policies on string-date columns can use a timezone instead of UTC.

◆ Where it's heading

Feature series run in parallel: views, column defaults, and now table maintenance operations. The failure-reason work is framed as groundwork for dashboards and transient-versus-permanent classification. Retention timezone support is split across a backend PR and a Spark 3.5 SQL PR, the same stacked pattern used elsewhere.

◆ Prediction

Expect the Spark SQL half of retention timezones (#735) and further Optimizer failure-visibility work, likely failure classification.

Alternatives to Calibre and OpenHouse

Other Analytics products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Calibre or OpenHouse.

See all Calibre alternatives → · See all OpenHouse alternatives →

Recent activity from Calibre and OpenHouse

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 21h agoOpenHousev0.5.548: Optimizer: capture and persist operation failure reason (#813)
  2. 1d agoOpenHousev0.5.547: Allow retention to use non-UTC date strings (#732)
  3. 1d agoCalibreCalibre MCP: connect your coding agent to your performance data ⚡
  4. 4d agoCalibreChrome 156 & Lighthouse 13.6.0
  5. 5d agoOpenHousev0.5.546: Spark CREATE VIEW keeps server-owned location
  6. 5d agoOpenHousev0.5.545: Views M1: single-layer ViewsService over the commit-only engine (#843)
  7. 6d agoOpenHousev0.5.544: jobs scheduler table declares column-defaults
  8. 7d agoOpenHousev0.5.543: Add integration tests for snapshot expiration with refs (#492)
  9. 1mo agoCalibreCore Web Vitals Test, now with ad metrics
  10. 2mo agoCalibreSynthetic Metrics: All pages, segmented by Test Profile and Deployment
  11. 2mo agoCalibreSee the performance impact of every website deployment
  12. 3mo agoCalibreMonitor Single Page App performance with soft navigations

Frequently asked questions

What is the difference between Calibre and OpenHouse?

They serve adjacent needs but don't currently overlap on shipped themes. Calibre is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is Calibre better than OpenHouse?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Calibre is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Analytics products to evaluate alongside.

What are the best alternatives to Calibre?

Top Calibre alternatives in Analytics are ranked by recent ship velocity. Browse the "Calibre alternatives" section above for the current picks, or visit /alternatives/calibreapp for the full list with editorial commentary on each.

What are the best alternatives to OpenHouse?

Top OpenHouse alternatives in Analytics are ranked by recent ship velocity. Browse the "OpenHouse alternatives" section above for the current picks, or visit /alternatives/openhouse for the full list with editorial commentary on each.