What each product actually is
Cursor ships as an AI-first desktop IDE built on a VS Code fork. The product thesis is that LLMs sit inside the editor loop — Tab autocomplete, inline edit, repository-aware chat, and agent modes that touch multiple files — plus optional cloud agents and related surfaces for longer work. Buyers choose an opinionated hosted IDE experience, not a plug-in bolted onto an unrelated editor.
Tabby is a self-hosted coding assistant: a server you (or your platform team) operate, plus IDE integrations for completion, Answer Engine chat, and context providers. The Community core is open-source and aimed at local or private-cloud inference, including consumer-grade GPU paths. It is not trying to be a full Cursor-class IDE fork; it is trying to keep code and prompts on infrastructure you control.
Current surfaces
Cursor (since the 2026-03-27 score date): Composer continued as the agentic coding model line — Composer 2.5 (vendor May 2026) for long-horizon agentic tasks across desktop, web, CLI, and mobile. Cloud Agents / harness work through Aug–Sep 2026: event subscriptions (PR/Slack/schedule), /goal, subagents on their own VMs, non-interrupting steering, Builds for faster cloud boots, Origin code hosting (early beta), and Projects (Sep 2026) for coordinator-led multi-agent work. Self-hosted machines (Sep 2026) let teams keep tool execution on internal workers/pools — a privacy-adjacent Cursor path that still sits inside the commercial Cursor product, not an OSS self-host assistant. Sources: https://cursor.com/composer · https://cursor.com/changelog · https://cursor.com/changelog/08-19-26 · https://cursor.com/pricing
Tabby (privacy / self-host / open-source pulse): Vendor positioning remains open-source self-hosted completion + Answer Engine + inline chat + context providers, with Docker/CUDA/Metal/ROCm-style local or private-cloud deploy and no external DBMS requirement for the core path. Commercial Team (~$19/seat/mo) and Enterprise add org controls (SSO, analytics, air-gapped support language on aicoolies/catalog). Site and docs still frame Community vs Team/Enterprise and IDE extensions (VS Code, JetBrains, and others). Vendor pricing lists Community for up to 5 users. Sources: https://www.tabbyml.com/ · https://www.tabbyml.com/pricing · https://tabby.tabbyml.com/docs/welcome · https://github.com/TabbyML/tabby
Scoreboard (from existing reviews)
Cursor (Score dated 2026-03-27): overall 91, speed 94, privacy 62, developer experience 93.
Tabby (Score dated 2026-07-28): overall 85, speed 80, privacy 94, developer experience 82.
These figures come from the existing aicoolies reviews for each tool. On those published totals Cursor leads overall, speed, and developer experience; Tabby leads privacy. Prefer operating-model fit and current product surfaces; use the table as supporting Score references with the dates above.
Privacy and operating model
Privacy is where the products diverge most clearly. Cursor’s published privacy score is 62 (score date 2026-03-27), reflecting a commercial AI IDE where cloud models and hosted agent features are part of the default experience (Privacy Mode / enterprise controls exist, but the default buyer path is not “air-gapped OSS server”). Tabby’s privacy score is 94 (score date 2026-07-28): Community self-host with local/private inference is the thesis, with Team/Enterprise for SSO/RBAC-style org needs.
Cursor’s newer self-hosted machines reduce some execution-boundary friction for enterprises that already buy Cursor — they do not turn Cursor into Tabby’s open-source self-hosted assistant. If the constraint is “run an OSS coding assistant we operate,” Tabby remains the fit; if the constraint is “best integrated AI IDE,” Cursor remains the fit.
Workflow, DX, and pricing posture
Cursor’s DX 93 and speed 94 (score date 2026-03-27) match the integrated-editor story: Tab, Composer/agents, and continuous in-editor assistance. Catalog pricing: Hobby free; Pro about $20/mo (annual discount language on aicoolies); Pro+/Ultra and Teams tiers for heavier use — confirm https://cursor.com/pricing.
Tabby’s DX 82 and speed 80 (score date 2026-07-28) reflect a capable self-hosted assistant that asks the org to own hardware, model choice, reliability, and security. Catalog: Community free open core for up to 5 users (vendor pricing); Team about $19/seat/mo; Enterprise custom. Model/GPU cost sits outside the software fee either way.
Who should pick which
Pick Cursor if you want a hosted AI-native IDE, agentic multi-file editing inside one editor, and the current Composer / Cloud Agents / Projects surface — and you can accept a commercial cloud-model path (or Cursor’s self-hosted worker option inside that product), with the Score profile dated 2026-03-27 (overall 91) as the review reference. Pick Tabby if self-hosting, air-gapping, or maximizing privacy/control on an open-source assistant is non-negotiable and you will fund platform capacity to run inference; privacy 94 (score date 2026-07-28) is the niche Score signal, not a reason to ignore Cursor for teams that want an integrated IDE.
