Exa vs Rebar
Which Agents AI tool is better in 2026?
Exa
Search for AI applications
Rebar
Vertical AI operating system that automates quoting for HVAC, electrical, and plumbing suppliers.
Side-by-side
| Exa | Rebar | |
|---|---|---|
| Tagline | Search for AI applications | Vertical AI operating system that automates quoting for HVAC, electrical, and plumbing suppliers. |
| Founded | 2022 | 2024 |
| HQ | San Francisco, US | US |
| Employees | 20-50 | — |
| Total funding | $102M | $14M |
| Latest round | Series B · Sep 2025 | Series A · Mar 2026 |
| Valuation | $700M | — |
| Cheapest paid plan | — | Pricing not disclosed |
| Free plan | ✓ Free | ✗ |
| Free trial | ✓ | ✗ |
| Top tier price | Enterprise · Contact sales | Pricing not disclosed |
| Pricing summary | 3 published plans | Pricing not listed |
| Categories |
Capability matrix
Developer-facing capabilities and access signals for Exa and Rebar.
| Capability | Exa | Rebar |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | 3 (Python, JavaScript, TypeScript) | — |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✗ |
| Verified | ✓ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Exa
- Has raised more capital ($102M vs $14M)
- Higher Neuron score (55 vs 48)
- Offers a free plan
- Offers a free trial
🔵 Strengths of Rebar
- Newer company (2024)
Which should you choose?
Choose Rebar if price matters most — it starts at Pricing not listed, which is friendlier for teams watching burn. Both AI Agents tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Exa if you want the most established option — it has raised $102M, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
Exa vs Rebar — which is better?
It depends on your priority. Exa has raised more capital and is the more established option; Rebar has broader feature depth. See the side-by-side table above.
Is Exa cheaper than Rebar?
No — Rebar's cheapest paid plan is Pricing not listed, while Exa's is Free.
Do Exa and Rebar offer free plans?
Exa: Yes, has a free plan. Rebar: Paid only.
Explore more AI Agents tools
Contextual paths to related AI startups, deals and rankings.