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Comparison · Analytics
Calibre vs MotherDuck
A side-by-side editorial comparison of Calibre and MotherDuck — release velocity, themes, recent moves, and the top alternatives to consider.
Calibre vs MotherDuck: at a glance
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. It came days after Test Agents moved to Chrome 156 and Lighthouse 13.6.0. The latest entry is a design tidy-up that places each page's Guide link in the same top-right spot.
What is MotherDuck?
MotherDuck adds who-can-open controls to Dives and a SQL view of compute usage.
MotherDuck ships a weekly changelog. The November 12 release lets owners keep a Dive private or share it with roles, users or the whole organization, with matching GRANT READ ON DIVE commands; new Dives start private. Flight run access can now be managed in the UI, and Business plans can query hourly Duckling usage per user from MD_INFORMATION_SCHEMA.COMPUTE_USAGE. It lands a week after the redesign that put Agent Chat on the home screen.
Calibre vs MotherDuck: editorial side-by-side
Calibre
6.3ANALYTICS
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. It came days after Test Agents moved to Chrome 156 and Lighthouse 13.6.0. The latest entry is a design tidy-up that places each page's Guide link in the same top-right spot.
◆ 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.
MotherDuck
6.3ANALYTICS
MotherDuck adds who-can-open controls to Dives and a SQL view of compute usage.
◆ Current state
MotherDuck ships a weekly changelog. The November 12 release lets owners keep a Dive private or share it with roles, users or the whole organization, with matching GRANT READ ON DIVE commands; new Dives start private. Flight run access can now be managed in the UI, and Business plans can query hourly Duckling usage per user from MD_INFORMATION_SCHEMA.COMPUTE_USAGE. It lands a week after the redesign that put Agent Chat on the home screen.
◆ Where it's heading
The agent-first redesign made Dives and Flights the things people create; the releases since are about controlling who sees and runs them and what they cost. Governance that began with row- and column-level security in October now covers the agent-built objects too.
◆ Prediction
Next likely are finer controls on what Agent Chat can do on a user's behalf, or usage limits built on the new compute usage view, since both follow from the permissions and cost work in the last two releases.
Alternatives to Calibre and MotherDuck
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 MotherDuck.
Dovetail
Dovetail lets admins choose which connectors members can plug into the workspace.
Dagster
Dagster drops Python 3.10 and lets agents run schedules and sensors through MCP.
OpenHouse
OpenHouse adds time-zone-aware retention and per-database table caps.
Countly
Countly 25.03.59 defaults to Node 26, supports MongoDB 9 and tightens app scoping.
Kubecost
Kubecost cuts three 3.3.2 release candidates in two days, still without notes.
See all Calibre alternatives → · See all MotherDuck alternatives →
Recent activity from Calibre and MotherDuck
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoMotherDuckDive sharing controls, Flight access UI and compute usage in SQL
- 4d agoCalibreDeploys: see which release made your site slower
- 5d agoCalibreGuides: everything in its right place
- 10d agoMotherDuckRedesigned UI puts Agent Chat on the home screen ⚡
- 11d agoCalibreCalibre MCP: connect your coding agent to your performance data ⚡
- 14d agoCalibreChrome 156 & Lighthouse 13.6.0
- 21d agoMotherDuckRow-level security, Dive write-back and Flight run grants
- 28d agoMotherDuckImage inputs for prompt_jev() and Agent Chat that builds Dives
- 1mo agoMotherDuckAdmin API user listing, connection timeouts, prompt_jev() in EU
- 1mo agoMotherDuckAI functions 50-60% cheaper; prompt_jev() billing begins
- 1mo agoCalibreCore Web Vitals Test, now with ad metrics
- 2mo agoCalibreSynthetic Metrics: All pages, segmented by Test Profile and Deployment
Frequently asked questions
What is the difference between Calibre and MotherDuck?
They serve adjacent needs but don't currently overlap on shipped themes. Calibre and MotherDuck are shipping at a similar cadence (velocity 6.3 vs 6.3, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Calibre better than MotherDuck?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Calibre and MotherDuck are shipping at a similar cadence (velocity 6.3 vs 6.3, both within Sparkpulse's "active" band). 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 MotherDuck?
Top MotherDuck alternatives in Analytics are ranked by recent ship velocity. Browse the "MotherDuck alternatives" section above for the current picks, or visit /alternatives/motherduck for the full list with editorial commentary on each.