Mastra vs Pretext
Mastra vs Pretext, compared side by side on 13 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 77/100 and Pretext on 18/100.
Where each one leads
Mastra
- our overall score: 77/100 against 18/100
- agent readiness: 58/100 against 45/100
Pretext
- domain rating: 97/100 against 76/100
At a glance
| Measure | Mastra | Pretext |
|---|---|---|
| What it is | An open-source TypeScript/JavaScript framework for building AI agents, from the creators of Gatsby. | A zero-dependency TypeScript library for multiline text measurement and layout entirely in userland, bypassing DOM performance bottlenecks. |
| Category | Agentic AI, AI Agents, Developer Tools, Open Source | Web Development, Frontend Engineering, Developer Tools, Open Source |
| Sells toBusiness model | B2B | B2B |
| Offering | Platform | Software |
| Founded | 2024 | 2026 |
| Headquarters | San Francisco, United States | Not published |
| Status | Active | Active |
Size, funding and growth
| Measure | Mastra | Pretext |
|---|---|---|
| Employees | 53 | Not published |
| Headcount growthLast 12 months | +204.5% | Not published |
| Total funding | $35.5M | Not published |
| Latest round | Series A | Not published |
| LinkedIn followers | 6,591 | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Mastra | Pretext |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 77/100 | 18/100 |
| Traction | 70/100 | Not published |
| Team | 90/100 | 30/100 |
| Community | 38/100 | Not published |
| Search visibility | 68/100 | 17/100 |
| Quality | 78/100 | Not published |
| Agent readinessHow well an AI agent can read and act on the site | D (58/100) | D (45/100) |
| Domain ratingLink authority, 0-100 | 76/100 | 97/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Mastra | Pretext |
|---|---|---|
| Hosting | Vercel | Not detected |
| CDN | Vercel | Not detected |
| Frameworks | Next.js, Tailwind CSS | Not detected |
| Open source | Yes, 15,100 GitHub stars | Yes |
| Self-hostable | Yes | Yes |
Product and pricing
| Measure | Mastra | Pretext |
|---|---|---|
| Key features | AI Agent Framework, Workflows, RAG, Evals, Memory & Tool Selection, Open Source & Modular | Not published |
What users say
| Measure | Mastra | Pretext |
|---|---|---|
| Community ratingVisitor votes on StartupHub | 5.0/5 from 2 votes | Not published |
| Reddit sentimentThreads we track | Not published | 1 positive, 0 negative across 2 threads |
“Pretext is the future, follow and learn in awesome-pretext. Excited about everthing happen with pretext, create a curated list of demos, community projects, tips, tutorials, and news for u/chenglou — the 15KB DOM-free text layout engine tha”r/reactjs
Mastra vs Pretext: common questions
Which is better, Mastra or Pretext?
On our 0-100 score Mastra rates higher (77/100 against 18/100). 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 13 data points above: read the rows that match what you are buying for.
How do Mastra and Pretext compare on the numbers?
Mastra leads on our overall score (77/100 against 18/100), agent readiness (58/100 against 45/100). Pretext leads on domain rating (97/100 against 76/100).
What do real users say about Mastra and Pretext?
Pretext: 1 positive and 0 negative mentions across 2 Reddit threads we track, mostly in r/reactjs.
Read the full Mastra review and pricing or the Pretext review and pricing. You can also browse other Mastra alternatives we track.