Best Real-time collaboration infrastructure
4 models · updated 2026-07-19
The verdict
Liveblocks leads — 2 of 4 models rank Liveblocks the top pick.
Not unanimous: Claude picks Yjs; Gemini picks Yjs.
As of 2026-07-19, ChatGPT, Claude, Gemini and Grok collectively rank Liveblocks #1 for real-time collaboration infrastructure on ModelsAgree. The models' case: The strongest turnkey choice for most web teams: managed low-latency sync, presence, conflict-free storage, Yjs support, comments, notifications, offline recovery,…. The models' main caveat: Usage-based pricing and platform dependence make it a poor fit for teams requiring full infrastructure control or predictable high-volume costs.. The strongest alternative is Yjs — The de facto CRDT engine for collaborative apps — battle-tested in production at scale (Notion-class editors, Evernote, JupyterLab, Serenity/AFFiNE),…. Not unanimous: Claude picks Yjs; Gemini picks Yjs. Source: https://modelsagree.com/best/best-real-time-collaboration-infrastructure (modelsagree.com, CC BY 4.0).
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Combined ranking
- 1GPT #1Claude #2Gemini #2Grok #1
The strongest turnkey choice for most web teams: managed low-latency sync, presence, conflict-free storage, Yjs support, comments, notifications, offline recovery, polished React tooling, and a global edge network eliminate substantial backend work.
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GPT The strongest turnkey choice for most web teams: managed low-latency sync, presence, conflict-free storage, Yjs support, comments, notifications, offline recovery, polished React tooling, and a global edge network eliminate substantial backend work.
Grok Mature managed infrastructure purpose-built for multiplayer/collaborative apps with strong Yjs integration for text editing, presence, cursors, comments, shared state (Storage + Yjs), excellent dev experience, scalability to millions, AI/agent support, and production-proven reliability reducing infra burden for typical web/JS teams.
Claude The strongest full-stack commercial offering — presence, comments, notifications, AI copilot primitives, and Yjs-compatible storage as managed APIs with polished React/Tiptap integrations; a small team can ship Figma-style multiplayer features in days rather than months. Assumption shaping rank: the typical practitioner values time-to-ship over infrastructure control.
Gemini Premier turnkey commercial platform providing managed multiplayer APIs for presence, state sync, comments, and Yjs integration with minimal setup effort.
Where it falls shortper GPT Usage-based pricing and platform dependence make it a poor fit for teams requiring full infrastructure control or predictable high-volume costs.
per Claude Proprietary hosted service with per-MAU pricing that climbs steeply at scale, and your collaboration data plane lives on their infrastructure — not for teams needing self-hosting or strict data residency.
per Gemini Proprietary cloud lock-in with usage-based pricing that scales steeply for high-volume active user applications.
per Grok SaaS pricing/dependency (not ideal for fully offline-first, self-hosted-only, or extreme cost-sensitive/large-scale custom needs).
- 2GPT #2Claude #1Gemini #1Grok #2
The de facto CRDT engine for collaborative apps — battle-tested in production at scale (Notion-class editors, Evernote, JupyterLab, Serenity/AFFiNE), best-in-class performance among CRDT libraries, and the richest ecosystem of editor bindings (ProseMirror/Tiptap, CodeMirror, Slate, Monaco) plus interchangeable providers (Hocuspocus, y-sweet, y-websocket). Free, open-source, no vendor lock-in; ranked first because for the typical practitioner building collaborative editing, it delivers the hardest part (conflict-free merging) with the most proven track record.
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Claude The de facto CRDT engine for collaborative apps — battle-tested in production at scale (Notion-class editors, Evernote, JupyterLab, Serenity/AFFiNE), best-in-class performance among CRDT libraries, and the richest ecosystem of editor bindings (ProseMirror/Tiptap, CodeMirror, Slate, Monaco) plus interchangeable providers (Hocuspocus, y-sweet, y-websocket). Free, open-source, no vendor lock-in; ranked first because for the typical practitioner building collaborative editing, it delivers the hardest part (conflict-free merging) with the most proven track record.
Gemini Industry-standard open-source CRDT framework offering exceptional performance, zero vendor lock-in, and broad binding support for rich-text editors and canvases.
GPT The strongest open-source foundation, with excellent CRDT performance, mature editor integrations, offline support, interoperable providers, and freedom to choose hosting, transport, and persistence; near-tied with Liveblocks when infrastructure ownership matters.
Grok Dominant open-source CRDT library with massive ecosystem (Tiptap, ProseMirror, CodeMirror bindings), smallest bundle, battle-tested for Google Docs-like editing, offline-first, flexible self-hosting or managed backends, highest adoption and maturity for custom collaborative editors.
Where it falls shortper GPT It is a synchronization engine rather than a complete production service, so authentication, persistence, scaling, monitoring, and abuse controls remain your responsibility.
per Claude It's a library, not a service — you still own hosting, persistence, auth, and scaling of the sync backend, and its API (relative positions, subdocuments) has a real learning curve.
per Gemini Requires self-hosting and scaling custom WebSocket relay infrastructure and document persistence layers.
per Grok Requires significant setup for backend/persistence/scaling (not plug-and-play for non-expert teams).
- 3GPT #4Claude #4Gemini #4Grok —
The best fit for genuinely local-first collaboration: offline operation is fundamental, concurrent changes merge without a central server, full history enables branching, and its transport-agnostic architecture supports durable user-controlled data.
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GPT The best fit for genuinely local-first collaboration: offline operation is fundamental, concurrent changes merge without a central server, full history enables branching, and its transport-agnostic architecture supports durable user-controlled data.
Claude The leading CRDT for local-first architecture — Rust core with WASM/JS/Swift bindings, automerge-repo giving batteries-included sync and storage, and Ink & Switch's research pedigree; the best choice when documents must live on-device with full history and sync opportunistically. Near-tie with Durable Objects: Automerge is more complete as a data layer, Durable Objects more broadly applicable as infrastructure.
Gemini Production-ready open-source JSON CRDT with a fast Rust core, immutable versioning, and excellent cross-platform support across web and native platforms.
Where it falls shortper GPT Its document/history model and younger integration ecosystem demand more architectural work than Yjs or a managed platform, particularly for large centralized web applications.
per Claude Slower and more memory-hungry than Yjs on large documents, and its ecosystem of editor bindings and hosted tooling is much thinner — weak fit for text-editing-centric apps.
per Gemini Higher memory and bandwidth overhead on large documents compared to Yjs, alongside a smaller rich-text binding ecosystem.
- 4GPT #3Claude #5Gemini —Grok —
Exceptionally proven global realtime transport with strong reliability guarantees, broad SDK coverage, and useful collaboration primitives through Spaces and LiveObjects; especially compelling when massive connection scale and operational assurance outweigh turnkey editing features.
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GPT Exceptionally proven global realtime transport with strong reliability guarantees, broad SDK coverage, and useful collaboration primitives through Spaces and LiveObjects; especially compelling when massive connection scale and operational assurance outweigh turnkey editing features.
Claude The most dependable managed realtime messaging backbone — global edge network, exactly-once delivery guarantees, connection-state recovery, and 99.999% uptime SLA, now with Spaces and a Liveblocks-competing collaboration SDK; the right choice when reliability of the transport layer is the product requirement (trading, live sports, fleet tracking, multiplayer state).
Where it falls shortper GPT Spaces emphasizes presence, cursors, locations, and locks, so sophisticated document collaboration still requires additional state and conflict-resolution design.
per Claude It's pub/sub transport plus presence, not a document-sync solution — no conflict resolution or persistence model for collaborative editing, and usage-based pricing gets expensive at high message volumes.
- 5GPT —Claude #3Gemini —Grok —
The best primitive for stateful real-time infrastructure at the edge — a single-threaded, addressable object per room with WebSocket hibernation and built-in SQLite storage solves the hardest distributed-systems problem (room coordination) at the platform level; PartyKit's acquisition folded a friendly DX layer directly into Cloudflare. Extremely cheap for what it does.
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Claude The best primitive for stateful real-time infrastructure at the edge — a single-threaded, addressable object per room with WebSocket hibernation and built-in SQLite storage solves the hardest distributed-systems problem (room coordination) at the platform level; PartyKit's acquisition folded a friendly DX layer directly into Cloudflare. Extremely cheap for what it does.
Where it falls shortper Claude Locks you to the Cloudflare Workers runtime and its constraints (CPU limits, no long-running native deps), and you still build the collaboration logic (CRDT/OT, presence) yourself on top.
- 6GPT —Claude —Gemini #3Grok —
Outstanding client-side sync engine for local-first web applications, delivering zero-latency optimistic UI updates and robust offline sync with any backend.
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Gemini Outstanding client-side sync engine for local-first web applications, delivering zero-latency optimistic UI updates and robust offline sync with any backend.
Where it falls shortper Gemini Commercial licensing requirement and non-trivial backend developer effort to write custom push/pull mutation handlers.
- 7GPT —Claude —Gemini —Grok #3
Excellent Postgres-centric real-time (Broadcast, Presence, DB changes) for collaborative tools, chat, dashboards; seamless with Supabase stack, low-latency, self-hostable, cost-effective for database-driven apps with built-in auth/row-level security.
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Grok Excellent Postgres-centric real-time (Broadcast, Presence, DB changes) for collaborative tools, chat, dashboards; seamless with Supabase stack, low-latency, self-hostable, cost-effective for database-driven apps with built-in auth/row-level security.
Where it falls shortper Grok Less specialized for complex rich-text CRDT merging or arbitrary shared state vs dedicated CRDT solutions (better for structured data).
- 8GPT #5Claude —Gemini #5Grok —
A highly productive programmable-room model for JavaScript teams, with simple WebSocket infrastructure, edge deployment, and strong compatibility with Yjs for multiplayer editors, whiteboards, and custom collaborative experiences.
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GPT A highly productive programmable-room model for JavaScript teams, with simple WebSocket infrastructure, edge deployment, and strong compatibility with Yjs for multiplayer editors, whiteboards, and custom collaborative experiences.
Gemini Exceptional real-time edge infrastructure that dramatically simplifies WebSocket routing and state orchestration for multiplayer applications.
Where it falls shortper GPT It provides lower-level realtime building blocks rather than Liveblocks-style complete collaboration features, leaving persistence architecture, permissions, and product UI to the developer.
per Gemini Deeply tied to serverless edge runtimes, leaving storage and CRDT conflict resolution logic up to the developer.
- 9GPT —Claude —Gemini —Grok #4
Long-proven, scalable managed real-time sync with strong presence/offline support, easy integration for many app types, robust Google-backed ecosystem suitable for mobile/web practitioners needing quick setup without deep CRDT expertise.
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Grok Long-proven, scalable managed real-time sync with strong presence/offline support, easy integration for many app types, robust Google-backed ecosystem suitable for mobile/web practitioners needing quick setup without deep CRDT expertise.
Where it falls shortper Grok Operational Transformation roots can be trickier for highly concurrent complex merges than modern CRDTs; vendor lock-in and pricing at scale.
Just missed the top 5
GPT Hocuspocus — excellent self-hosted Yjs server, particularly for collaborative editors, but adds operational responsibility and is less broadly turnkey than the top choices · Convex — superb reactive application backend, but not a specialized CRDT collaboration stack and needs extra machinery for rich concurrent editing
Claude ElectricSQL — elegant Postgres sync-engine approach to shared state, but its 2024 rewrite narrowed scope to read-path sync, leaving writes/merging to you — not yet a full collaboration answer
Gemini ShareDB — battle-tested OT engine for JSON, but lacks modern local-first CRDT capabilities · Microsoft Fluid Framework — powerful enterprise sync architecture, but burdened by steep setup complexity and lower community adoption
Grok Automerge — strong Git-like history/versioning but smaller ecosystem, larger bundle, less text-editing maturity than Yjs
By model
ChatGPT
- 1.Liveblocks
- 2.Yjs
- 3.Ably
- 4.Automerge
- 5.PartyKit
Claude
- 1.Yjs
- 2.Liveblocks
- 3.Cloudflare Durable Objects
- 4.Automerge
- 5.Ably
Gemini
- 1.Yjs
- 2.Liveblocks
- 3.Replicache
- 4.Automerge
- 5.PartyKit
Grok
- 1.Liveblocks
- 2.Yjs
- 3.Supabase Realtime
- 4.Firebase
Common questions
What is the best real-time collaboration infrastructure according to AI models?
Liveblocks leads. 2 of 4 models rank Liveblocks the top pick. The current top 3: Liveblocks, Yjs, Automerge. Ranked by asking ChatGPT, Claude, Gemini, Grok the same buying question and merging their top-5 picks, updated 2026-07-19. Source: modelsagree.com.
Which real-time collaboration infrastructure did each AI model pick first?
ChatGPT: Liveblocks. Claude: Yjs. Gemini: Yjs. Grok: Liveblocks.
Do the AI models agree on the best real-time collaboration infrastructure?
Not unanimous. Claude picks Yjs; Gemini picks Yjs.
How is this real-time collaboration infrastructure ranking made?
ChatGPT, Claude, Gemini, Grok are each asked the same buying question in a fresh session with no system steering. Their top-5 answers are merged (rank 1 = 5 pts … rank 5 = 1 pt) into the consensus ranking, re-polled weekly and tracked over time.
More on how polling works: full methodology →
This ranking moves
We re-poll all four models weekly. Get one short email when a #1 flips.
Cite this ranking
ModelsAgree, “Best Real-time collaboration infrastructure” — merged ranking from ChatGPT, Claude, Gemini & Grok, polled 2026-07-19. https://modelsagree.com/best/best-real-time-collaboration-infrastructure (CC BY 4.0)
Tracked by ModelsAgree · rank 1 = 5 pts … rank 5 = 1 pt · re-polled weekly