Sweep
AI coding assistant for JetBrains IDEs — Y Combinator Summer 2023 alumnus founded by Kevin Lu, William Zeng and Samip Dahal in San Francisco. Raised approximately $2.5M cumulative across YC and the November 2023 seed round at a $25M post-money valuation, led by Goat Capital with Replit CEO Amjad Masad and Replit’s VP of AI Michele Catasta participating. Status reclassified Active as of June 2026 — HuggingFace organisation updates within the past 10 days, JetBrains Marketplace plugin live, sweep.dev active. The earlier IM Framework universe-level Wound-Down classification is superseded; flagged to Wren for universe update.
The Business
Sweep is an AI coding assistant for JetBrains IDEs, founded in 2023 by Kevin Lu, William Zeng and Samip Dahal as a Y Combinator Summer 2023 cohort company in San Francisco. The product is positioned around autocomplete, code editing and basic-developer-task automation focused on the JetBrains IDE family (IntelliJ, PyCharm and others) rather than the multi-IDE positioning of Cursor, GitHub Copilot and Codeium. The company raised approximately $2.5M cumulative external capital through the November 2023 seed round at a $25M post-money valuation led by Goat Capital, with Replit CEO Amjad Masad, Replit VP of AI Michele Catasta and Exceptional Capital participating per TechCrunch and the YC company profile. The IM Framework v1.6ep universe classifies Sweep as Wound-Down; public-source verification of a discrete wind-down event (closure, acquisition, asset-sale announcement) was not surfaced in the v1.6ep evidence-pass cycle. The JetBrains plugin page is listed at 40k+ installs and 4.9-star rating per industry coverage, the documentation site (docs.sweep.dev) remains publicly available, and the YC company profile is still listed. We flag the universe-level Wound-Down classification status to Wren for review pending primary-source confirmation.
Customers and Distribution
Sweep does not disclose revenue in primary press. The principal commercial channel is the JetBrains plugin marketplace, where industry coverage places the install base at 40k+ with a 4.9-star rating through 2025–2026. The documentation site (docs.sweep.dev) and the company website (sweep.dev) remain publicly available. Specific commercial-traction signals — paying-user count, ARR — have not been separately disclosed in primary press through the v1.6ep cycle. We decline-to-publish revenue or user-count figures rather than rely on aggregator estimates. The narrow JetBrains-IDE-anchor positioning is the structural distribution feature of the product — distinct from the multi-IDE positioning of the better-funded cohort but bounded by the JetBrains IDE family’s overall market share in the developer-tools landscape.
Important disambiguation: Sweep.dev (the YC Summer 2023 coding-AI company on this page) is distinct from Sweep.io (the Salesforce-workflow tooling vendor that raised a $22.5M Series B in May 2025); per Sweep.io’s own clarification post, the two are unrelated entities. The November 2024 brief reference to a possible Eve-acquisition of Sweep does not appear in primary-press triangulation; we surface the absence of confirmation as part of the universe-classification flag to Wren.
Model Strategy
Sweep is an applications-layer business on top of frontier models — the company does not own a foundation model. The strategic bet is that vertical depth on the JetBrains-IDE-anchor primitive — autocomplete, code editing and basic-developer-task automation specifically tuned for IntelliJ, PyCharm and the broader JetBrains IDE family — can create a defensible position against the multi-IDE platforms (Cursor, GitHub Copilot, Codeium / Windsurf, Tabnine). The structural risk on the model strategy is that the same foundation-model providers Sweep depends on ship better out-of-the-box coding-AI capability and that JetBrains’ own native AI Assistant absorbs the JetBrains-IDE-anchor channel — both compress the niche-IDE-anchor strategic position. The capital-stack thinness versus the multi-IDE cohort compounds the structural compression: cumulative ~$2.5M external capital is materially smaller than Anysphere / Cursor (hundreds of millions), GitHub Copilot (inside Microsoft) and Codeium / Windsurf (meaningful Series B). The absence of a follow-on Series A round through the v1.6ep cycle is consistent with the IM Framework universe-level Wound-Down classification — even if a discrete wind-down event has not been independently surfaced.
At A Glance
The Numbers
Trend charts are not shown for Sweep — only single-point data is currently available. See At A Glance above for the most recent disclosed values.
Leadership Team
Sweep is a small founding-team-led YC Summer 2023 cohort company. The senior bench below the founder tier is not separately disclosed in named English-language press — consistent with a YC-stage company at the seed-stage capital level. The structural risk is concentration on the three founders through any continuing operation or transition. Public-source signals as of June 2026 indicate the JetBrains plugin and the documentation site remain active and HuggingFace updates are within 10 days; status reclassified Active and flagged to Wren for universe update.
IM Framework Scoring
IM’s structured assessment of Sweep’s competitive position. The summary below is the headline; expand “Show the full analyst-grade analysis” near the bottom for the per-dimension reasoning and evidence. Methodology →
Funding History
| Date | Round | Raised | Post-money | Lead investor(s) |
|---|---|---|---|---|
| Nov 2023 | Seed | $2M | $25M post-money | Goat Capital (with Replit’s Amjad Masad, Michele Catasta and Exceptional Capital) |
| 2023 | Y Combinator Summer 2023 | $500K | — | Y Combinator |
Approximately $2.5M cumulative external capital through the November 2023 $2M seed round at a $25M post-money valuation led by Goat Capital with Replit CEO Amjad Masad, Replit VP of AI Michele Catasta and Exceptional Capital participating, per TechCrunch and the YC company profile. The Y Combinator Summer 2023 cohort participation contributed the standard YC investment. No follow-on Series A round has been publicly disclosed since the November 2023 seed. Status reclassified Active as of June 2026 based on HuggingFace activity within 10 days, JetBrains Marketplace plugin live and sweep.dev domain active; the earlier Wound-Down universe classification is superseded and flagged to Wren for universe update.
Competitive Landscape
| Competitor | Positioning | Distribution edge | Threat profile |
|---|---|---|---|
| Cursor (Anysphere) | AI-native VS Code fork positioned as the default AI coding environment for individual developers; far broader use-case surface than Sweep’s codebase-modernisation focus. | Direct-download IDE with viral PLG inside developer communities; rapid paid-subscription conversion off a freemium tier. | High asymmetric — the multi-IDE AI coding assistant category leader; materially better-funded and distribution-advantaged on the developer-platform lane that Sweep targets. |
| GitHub Copilot ((Microsoft / GitHub)) |
Microsoft / GitHub’s coding-AI assistant — the incumbent default inside enterprise developer workflows; Copilot Workspace extended the surface into agentic codebase tasks adjacent to Sweep’s lane. | Embedded in VS Code, Visual Studio and the broader GitHub surface; enterprise distribution via Microsoft / GitHub seat licensing. | High asymmetric — the hyperscaler-backed coding-AI assistant with installed-base advantage across GitHub-anchored developer workflows; structural distribution moat versus the niche-IDE-anchor cohort. |
| Codeium / Windsurf | Multi-IDE AI coding assistant with strong JetBrains coverage and a free tier that broadened the funnel; the Windsurf agentic-IDE pivot pulls the product surface closer to Sweep’s automation framing. | Free-tier-led PLG via plugin marketplaces across VS Code, JetBrains, Eclipse and Vim; enterprise sales motion for the paid tier. | High — multi-IDE AI coding assistant including JetBrains coverage; closer head-to-head against Sweep on JetBrains-specific feature competition than the GitHub Copilot or Cursor positioning. |
| JetBrains AI Assistant ((JetBrains)) |
JetBrains’ native AI assistant inside IntelliJ, PyCharm and the broader JetBrains IDE family — incumbent advantage with paying JetBrains users. | Bundled into JetBrains IDE subscriptions; reaches the established JetBrains seat base with zero additional procurement. | High asymmetric — JetBrains’ own native AI assistant for IntelliJ, PyCharm and the broader JetBrains IDE family; structural-channel substitution risk on the same IDE-anchor positioning that Sweep targets. |
| Tabnine | Long-tenured AI coding assistant with deep IDE plug-in coverage; emphasis on on-prem / private deployment for security-sensitive enterprises. | Multi-IDE plugin distribution (VS Code, JetBrains and others); enterprise sales motion focused on regulated and self-hosted deployments. | Medium-high — long-tenured AI coding assistant covering JetBrains and other IDEs; established developer-tools incumbent on the JetBrains-IDE channel. |
Potential Risks
IM Framework universe-level Wound-Down classification — status pending review
The IM Framework v1.6ep universe classifies Sweep as Wound-Down. Public-source verification of a discrete wind-down event (closure, acquisition, asset-sale announcement) was not surfaced in the v1.6ep evidence-pass cycle — the JetBrains plugin page lists 40k+ installs and 4.9-star rating per industry coverage, the documentation site (docs.sweep.dev) remains publicly available, and the YC company profile is still listed. We flag the classification status to Wren for review pending primary-source confirmation. The structural framing of the entry as Wound-Down may reflect the absence of follow-on capital and the narrow-IDE-anchor positioning rather than a discrete corporate-event.
Narrow JetBrains-IDE-anchor positioning
Sweep’s strategic-bet positioning on the JetBrains-IDE-anchor as the primary differentiation is structurally narrow versus the multi-IDE cohort (Cursor, GitHub Copilot, Codeium / Windsurf, Tabnine). The structural risk is that JetBrains-IDE-anchor positioning forecloses meaningful follow-on Series A capital and limits the long-run defensibility position; this is the principal observation underlying the IM Framework universe-level Wound-Down classification.
JetBrains native AI Assistant structural-channel substitution
JetBrains’ own native AI Assistant integrated into IntelliJ, PyCharm and the broader JetBrains IDE family is the most structurally-channel-advantaged competitor on the same IDE-anchor lane that Sweep targets. The structural risk is that JetBrains’ native AI Assistant absorbs the IDE-anchor channel demand and forecloses Sweep’s competitive position; this is the most asymmetric competitive risk on the IM Framework score.
Capital-stack thinness versus the multi-IDE cohort
Sweep’s cumulative ~$2.5M external capital through the November 2023 seed round is materially smaller than the multi-IDE competitor cohort — Anysphere / Cursor has raised hundreds of millions across late-stage rounds, GitHub Copilot operates inside Microsoft, Codeium / Windsurf has raised meaningful Series B capital. The structural risk is that the resource gap forecloses the option to compete head-to-head on agent capability and product investment.
Foundation-model commodity exposure
Sweep is an applications-layer business on top of frontier models — the company does not own a foundation model. As foundation-model providers ship better out-of-the-box coding-AI capability and as JetBrains’ native AI Assistant absorbs the IDE-anchor channel, the vertical-applications layer compresses. The risk is shared across the coding-AI cohort but compounds the Sweep-specific narrow-IDE-anchor compression.
Recent IM Coverage
- Coding AI — sector landing May 2026.
- AI Tracker methodology — Wound-Down classification May 2026.
Show recent press coverage of Sweep
- Nov 2023 — Sweep aims to automate basic dev tasks using large language models (TechCrunch)
- 2023 — Sweep: The best AI coding assistant for JetBrains (Y Combinator)
- Active — Sweep AI — AI for JetBrains IDEs (Sweep.dev)
- Active — Sweep AI Documentation Changelog (Sweep.dev Docs)
- 2024 — Sweep.io vs Sweep AI (Sweep.dev): Two Different Companies (Sweep.io)
Show the source register for the figures on this page
IM operates a primary-source-where-possible discipline. The figures above come from:
- Revenue: Sweep does not disclose revenue in primary press. The Y Combinator profile and the November 2023 seed round did not include public revenue disclosures; subsequent commercial-traction disclosures have not surfaced in primary press through the v1.6ep cycle. We decline-to-publish a revenue figure rather than rely on aggregator estimates (Tracxn/PitchBook are on the IM blocklist).
- Installs (JetBrains plugin): Industry coverage of the JetBrains plugin marketplace places Sweep at 40k+ installs with a 4.9-star rating through 2025–2026 per aggregator coverage; the JetBrains marketplace itself is the primary source for the install count. The continuing JetBrains plugin presence is the most active operational signal — informing the universe-level Wound-Down-classification flag to Wren for review.
- Headcount: Sweep is privately held and does not separately disclose headcount in primary press. The YC Summer 2023 cohort participation places the company in the small-founding-team range; specific post-seed headcount is not separately disclosed. We decline-to-publish a precise headcount.
- Funding to date: Approximately $2.5M cumulative external capital through the November 2023 $2M seed round at $25M post-money led by Goat Capital with Replit’s Amjad Masad, Michele Catasta and Exceptional Capital participating; the Y Combinator Summer 2023 cohort participation contributed the standard YC investment. No follow-on Series A round has been publicly disclosed since the November 2023 seed.
Methodology & Disclaimer
For metric definitions, source-tier hierarchy, and decline-to-publish rules, see the tracker methodology. Confidence dots (• green / • amber / • red) follow the same convention as the AI Tracker.
Spotted a figure you believe is wrong? Send corrections to info@informationmatters.net.
Information Matters Framework scores are the considered opinion of the IM team — human and AI — applied to publicly-available evidence under a disclosed methodology. They are not statements of fact about the companies scored and they are not investment advice.
