Is Semble AI profitable in 2026?

No public revenue, customer count, or profitability data exists for Semble AI as of June 2026. Job postings describe target customers only generically as construction companies, and a third-party review noted the company's site shows no customer names, funding, or certifications, indicating pre-revenue status.

How many employees does Semble AI have?

Semble AI has roughly 2 employees as of June 2026, per Built In job listings dated June 9, 2026. The company was still actively hiring for its first 'Founding AI Engineer' role at that time, more than half a year after its October 2025 YC launch.

Could Autodesk or Procore replace Semble AI?

Yes, this is a real risk: Autodesk already owns the CAD/BIM data layer via Revit and Autodesk Construction Cloud and shipped AI-native Forma assistant features around June 2026, while Procore embeds AI for RFI/submittal summarization, both capable of replicating Semble's design-agent feature without structural blockers.

Who are Semble AI's main competitors?

Semble AI's closest peers in AI-for-construction design are Togal.AI, Nomic AI, and Civils.ai, all racing similar AEC-AI takeoff and design-generation niches as of 2026. Incumbents Procore and Autodesk Construction Cloud are also embedding overlapping AI features into their existing platforms.

How much funding has Semble AI raised?

No confirmed funding figure exists. Third-party aggregators cite conflicting numbers, $27 million versus $30 million, which are unverified and implausible for a 2-person Y Combinator Fall 2025 company with no primary-source funding announcement, investor list, or valuation located as of July 2026.

What does Semble AI actually build?

Semble AI builds AI agents that ingest architectural floor plans and generate code-compliant building-system designs, fire, HVAC, plumbing, security, plus approval-ready documentation, using vision pipelines for CAD/PDF parsing and LLM plus RAG workflows, per its June 2026 engineering job posting.

YC Fall 2025 · United States

Semble AI

Two-person YC startup turning floor plans into code-compliant trade designs.

Losing its protection

Assessed 27 July 2026 · Evidence as of 27 July 2026

The structural protection is eroding.

On the recordSince 27 July 2026 · Checkable from Q2 2027 · Every call on the record Checkpoint: Window closes for Semble to get formal AHJ acceptance of its generated design packages in one jurisdiction

The call

Semble AI has a real niche and no customers yet, sitting in a window that Autodesk could close whenever it decides to build the same feature.

Semble AI builds software that uses artificial intelligence to automatically design fire-safety systems for construction crews, reading plans and regulations to save time. Right now, it is not hard to copy: big software company Autodesk already owns the design tools that construction uses every day, and could add Semble's artificial-intelligence tricks to their platform in a year or two. The one thing that could save Semble is if it becomes the only company that contractors trust to handle paperwork and approval from local fire inspectors and building departments, locking in customers through that trust and local knowledge of rules that huge companies cannot easily replicate.

Why

AI pressure: Frontier multimodal agents from OpenAI, Anthropic, Google. No lab has shipped a code-compliant trades design agent yet, but the underlying vision+LLM tools they'd need already exist off the shelf. Could AI do the core job? Yes, likely.

Bigger players: Autodesk. Autodesk owns the CAD/BIM data trades firms already use and could bolt a design agent onto Forma or ACC, but hasn't shipped one yet. Could a giant copy it? Yes, easily.

What protects it. None proven yet. The only real protection would be owning AHJ-approved design workflows before anyone bigger copies the feature.

What would change this call

Autodesk ships a code-compliant design agent in Forma or ACC within 18-24 months. Would show incumbent can replicate Semble's core capability without Semble's moat.
Semble lands 5+ paying integrator design partners in fire protection within 9-12 months. Would show workflow stickiness and early proof of a defensible trade wedge.
Semble secures formal AHJ acceptance of generated design packages in a real jurisdiction. Would show regulatory trust is becoming a real, hard-to-copy asset.

Key numbers

About 2 employees (2026-06)
YC F25 batch, launched Oct 2025 (2025-10)
Hiring one engineer at $150K-$250K base (2026-06)

Named risks

No verifiable revenue, paying customers, or customer names as of mid-2026. Severity: high
Only 2 employees and still hiring first founding engineer 8+ months after October 2025 launch. Severity: high
Autodesk and Procore face no structural block to shipping equivalent design-compliance AI features. Severity: high
Conflicting, unconfirmed funding figures ($27M vs $30M) from aggregators with no primary source. Severity: medium
Positioning drift from narrow fire-system design to broad 'AI operating system for the trades' before proven PMF. Severity: medium

Rivals, as read in July 2026

Rival	Direction	Evidence
Autodesk	gaining on	Shipped AI-native Forma assistant features around June 2026, owns Revit/BIM data layer Semble depends on
Procore	contesting	Embeds AI for RFI and submittal summarization as of 2026, overlapping trades back-office workflows
Togal.AI	gaining on	Reports hundreds of users among large contractors and construction-tech competition wins as of 2026
Nomic AI	contesting	Publishes AEC AI platform comparisons vs Togal.ai as of June 30, 2026, racing same design-coordination niche
Civils.ai	contesting	Preconstruction document-intelligence and takeoff tool active in AEC-AI space as of July 2026

Questions people ask

Is Semble AI profitable in 2026?: No public revenue, customer count, or profitability data exists for Semble AI as of June 2026. Job postings describe target customers only generically as construction companies, and a third-party review noted the company's site shows no customer names, funding, or certifications, indicating pre-revenue status.
How many employees does Semble AI have?: Semble AI has roughly 2 employees as of June 2026, per Built In job listings dated June 9, 2026. The company was still actively hiring for its first 'Founding AI Engineer' role at that time, more than half a year after its October 2025 YC launch.
Could Autodesk or Procore replace Semble AI?: Yes, this is a real risk: Autodesk already owns the CAD/BIM data layer via Revit and Autodesk Construction Cloud and shipped AI-native Forma assistant features around June 2026, while Procore embeds AI for RFI/submittal summarization, both capable of replicating Semble's design-agent feature without structural blockers.
Who are Semble AI's main competitors?: Semble AI's closest peers in AI-for-construction design are Togal.AI, Nomic AI, and Civils.ai, all racing similar AEC-AI takeoff and design-generation niches as of 2026. Incumbents Procore and Autodesk Construction Cloud are also embedding overlapping AI features into their existing platforms.
How much funding has Semble AI raised?: No confirmed funding figure exists. Third-party aggregators cite conflicting numbers, $27 million versus $30 million, which are unverified and implausible for a 2-person Y Combinator Fall 2025 company with no primary-source funding announcement, investor list, or valuation located as of July 2026.
What does Semble AI actually build?: Semble AI builds AI agents that ingest architectural floor plans and generate code-compliant building-system designs, fire, HVAC, plumbing, security, plus approval-ready documentation, using vision pipelines for CAD/PDF parsing and LLM plus RAG workflows, per its June 2026 engineering job posting.

Timeline

2026-06-09Built In lists Semble AI at 2 employees, still hiring Founding AI Engineer in San Francisco
2026-02StartupHub.ai profiles co-founder Ethan Boyers as CTO of Semble AI
2025-11-30Semble AI posts Founding AI Engineer role on YC jobs board
2025-10-16Semble AI publicly launches via Launch YC, framed as automating fire/HVAC/plumbing/security design
2025Semble AI founded in San Francisco by Jonathan Tyshler and Ethan Boyers

Revision history

27 July 2026

First assessed. Losing its protection. The text above is fixed as of this date and is not edited afterwards.

In the same band

Nexus Terrain Metorial