Mastra vs Syllable
Mastra vs Syllable, compared side by side on 23 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Mastra is on 76/100 and Syllable on 64/100.
Where each one leads
Mastra
- our overall score: 76/100 against 64/100
- agent readiness: 58/100 against 52/100
- domain rating: 76/100 against 30/100
- headcount growth: +204.5% against +32.2%
- LinkedIn following: 6,591 against 4,171
Syllable
- funding raised: $94.3M against $35.5M
At a glance
| Measure | Mastra | Syllable |
|---|---|---|
| What it is | An open-source TypeScript/JavaScript framework for building AI agents, from the creators of Gatsby. | Agentic platform for building, running, and optimizing AI agents across voice, SMS, chat, and web. |
| Category | Agentic AI, AI Agents, Developer Tools, Open Source | Agentic AI, AI Agents, Foundation Model, Large Language Model |
| Sells toBusiness model | B2B | B2B |
| Offering | Platform | Platform |
| Founded | 2024 | 2016 |
| Headquarters | San Francisco, United States | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Mastra | Syllable |
|---|---|---|
| Employees | 53 | 55 |
| Headcount growthLast 12 months | +204.5% | +32.2% |
| Total funding | $35.5M | $94.3M |
| Latest round | Series A | Series A |
| LinkedIn followers | 6,591 | 4,171 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Mastra | Syllable |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 76/100 | 64/100 |
| Traction | 70/100 | 57/100 |
| Team | 90/100 | 70/100 |
| Community | 25/100 | Not published |
| Search visibility | 59/100 | 45/100 |
| Quality | 78/100 | 68/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (58/100) | D (52/100) |
| Domain ratingLink authority, 0-100 | 76/100 | 30/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Mastra | Syllable |
|---|---|---|
| Hosting | Vercel | Not detected |
| CDN | Vercel | Cloudflare |
| Frameworks | Next.js, Tailwind CSS | Bootstrap |
| Analytics | Not detected | Google Tag Manager |
| Open source | Yes, 15,100 GitHub stars | No |
| Self-hostable | Yes | No |
Product and pricing
| Measure | Mastra | Syllable |
|---|---|---|
| Key features | AI Agent Framework, Workflows, RAG, Evals, Memory & Tool Selection, Open Source & Modular | Not published |
What users say
| Measure | Mastra | Syllable |
|---|---|---|
| Community ratingVisitor votes on StartupHub | 5.0/5 from 1 vote | Not published |
Mastra vs Syllable: common questions
Which is better, Mastra or Syllable?
On our 0-100 score Mastra rates higher (76/100 against 64/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 23 data points above: read the rows that match what you are buying for.
How do Mastra and Syllable compare on the numbers?
Mastra leads on our overall score (76/100 against 64/100), agent readiness (58/100 against 52/100), domain rating (76/100 against 30/100), headcount growth (+204.5% against +32.2%), LinkedIn following (6,591 against 4,171). Syllable leads on funding raised ($94.3M against $35.5M).
Read the full Mastra review and pricing or the Syllable review and pricing. You can also browse other Mastra alternatives we track.