Magnitude vs Mastra
Magnitude vs Mastra, compared side by side on 22 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: Magnitude is on 50/100 and Mastra on 77/100.
Where each one leads
Magnitude
Leads on none of the measures we hold for both companies.
Mastra
- our overall score: 77/100 against 50/100
- agent readiness: 58/100 against 31/100
- domain rating: 76/100 against 40/100
- headcount: 53 against 2
- funding raised: $35.5M against $10.0M
At a glance
| Measure | Magnitude | Mastra |
|---|---|---|
| What it is | Open-source, vision-first browser agent for natural language control and web task automation. | An open-source TypeScript/JavaScript framework for building AI agents, from the creators of Gatsby. |
| Category | Agentic AI, AI Agent, Agentic Browser, Computer Vision | Agentic AI, AI Agents, Developer Tools, Open Source |
| Sells toBusiness model | B2B | B2B |
| Offering | Software | Platform |
| Founded | 2023 | 2024 |
| Headquarters | San Francisco, United States | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Magnitude | Mastra |
|---|---|---|
| Employees | 2 | 53 |
| Headcount growthLast 12 months | Not published | +204.5% |
| Total funding | $10.0M | $35.5M |
| Latest round | Seed | Series A |
| LinkedIn followers | Not published | 6,591 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Magnitude | Mastra |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 50/100 | 77/100 |
| Traction | 40/100 | 70/100 |
| Team | 70/100 | 90/100 |
| Community | Not published | 38/100 |
| Search visibility | 14/100 | 68/100 |
| Quality | 58/100 | 78/100 |
| Agent readinessHow well an AI agent can read and act on the site | F (31/100) | D (58/100) |
| Domain ratingLink authority, 0-100 | 40/100 | 76/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Magnitude | Mastra |
|---|---|---|
| Hosting | Vercel | Vercel |
| CDN | Vercel | Vercel |
| Frameworks | Not detected | Next.js, Tailwind CSS |
| Open source | Yes | Yes, 15,100 GitHub stars |
| Self-hostable | Yes | Yes |
Product and pricing
| Measure | Magnitude | Mastra |
|---|---|---|
| Key features | Vision-First Architecture, Natural Language Control, Precise Interaction, Intelligent Data Extraction, Built-in Test Runner, Controllable & Repeatable Automation | AI Agent Framework, Workflows, RAG, Evals, Memory & Tool Selection, Open Source & Modular |
What users say
| Measure | Magnitude | Mastra |
|---|---|---|
| Community ratingVisitor votes on StartupHub | Not published | 5.0/5 from 2 votes |
Magnitude vs Mastra: common questions
Which is better, Magnitude or Mastra?
On our 0-100 score Mastra rates higher (77/100 against 50/100). 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 22 data points above: read the rows that match what you are buying for.
How do Magnitude and Mastra compare on the numbers?
Mastra leads on our overall score (77/100 against 50/100), agent readiness (58/100 against 31/100), domain rating (76/100 against 40/100), headcount (53 against 2), funding raised ($35.5M against $10.0M).
Read the full Magnitude review and pricing or the Mastra review and pricing. You can also browse other Magnitude alternatives we track.