Agent4Rec vs Mastra
Agent4Rec vs Mastra, compared side by side on 12 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: Agent4Rec is on 20/100 and Mastra on 77/100.
Where each one leads
Agent4Rec
Leads on none of the measures we hold for both companies.
Mastra
- our overall score: 77/100 against 20/100
At a glance
| Measure | Agent4Rec | Mastra |
|---|---|---|
| What it is | Simulates 1,000 LLM-powered agents for diverse movie recommendation preferences. | An open-source TypeScript/JavaScript framework for building AI agents, from the creators of Gatsby. |
| Category | Agentic AI, AI Agent, Multi-Agent Systems, Foundation Model | Agentic AI, AI Agents, Developer Tools, Open Source |
| Sells toBusiness model | B2B | B2B |
| Offering | Software | Platform |
| Founded | 2023 | 2024 |
| Headquarters | Not published | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Agent4Rec | Mastra |
|---|---|---|
| Employees | Not published | 53 |
| Headcount growthLast 12 months | Not published | +204.5% |
| Total funding | Not published | $35.5M |
| Latest round | Not published | 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 | Agent4Rec | Mastra |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 20/100 | 77/100 |
| Traction | Not published | 70/100 |
| Team | 30/100 | 90/100 |
| Community | Not published | 38/100 |
| Search visibility | 6/100 | 68/100 |
| Quality | Not published | 78/100 |
| Agent readinessHow well an AI agent can read and act on the site | Not published | D (58/100) |
| Domain ratingLink authority, 0-100 | Not published | 76/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Agent4Rec | Mastra |
|---|---|---|
| Hosting | Not detected | Vercel |
| CDN | Not detected | Vercel |
| Frameworks | Not detected | Next.js, Tailwind CSS |
| Open source | Yes | Yes, 15,100 GitHub stars |
| Self-hostable | No | Yes |
Product and pricing
| Measure | Agent4Rec | Mastra |
|---|---|---|
| Key features | Generative Agent Simulation, Personalized Recommendation Environments, Behavioral Analysis Insights, Configurable Recommender Systems, Automated Data Processing, Research Automation | AI Agent Framework, Workflows, RAG, Evals, Memory & Tool Selection, Open Source & Modular |
What users say
| Measure | Agent4Rec | Mastra |
|---|---|---|
| Community ratingVisitor votes on StartupHub | Not published | 5.0/5 from 2 votes |
Agent4Rec vs Mastra: common questions
Which is better, Agent4Rec or Mastra?
On our 0-100 score Mastra rates higher (77/100 against 20/100). 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 12 data points above: read the rows that match what you are buying for.
How do Agent4Rec and Mastra compare on the numbers?
Mastra leads on our overall score (77/100 against 20/100).
Read the full Agent4Rec review and pricing or the Mastra review and pricing. You can also browse other Agent4Rec alternatives we track.