# Mastra Landing Page Growth Score | YC W25

Lazyweb publishes a public search API over its indexed pages; the guide is at https://www.lazyweb.com/agent-access.

Source: https://www.lazyweb.com/yc-w25/mastra
Source observed: 2026-10-08T02:20:40.745Z
Last checked: 2026-10-20T08:23:26.642+00:00
Indexed: 2026-10-08T05:27:00.883+00:00

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# Mastra Landing Page Growth Score

We provide a Growth Score report for [Mastra](https://mastra.ai/), a YC W25 company. The report evaluates Mastra's landing page across mobile web, information hierarchy, CTA, value props, and trust, and compares it with selected competitors.

## Overall result

Mastra's **Growth Score is 69 of 100**, updated **September 22, 2026**. Its weakest category is **Mobile web**, scored **62**.

### Category scores

| Category | Score |
| --- | ---: |
| Mobile web | 62 |
| Information hierarchy | 66 |
| CTA | 68 |
| Value props | 72 |
| Trust | 76 |

[Fix Mobile web](https://www.lazyweb.com/plans/checkout?plan=individual&source=growth_score_feature_build_fixes)

## How Mastra ranks

1. [Vercel AI SDK — 74](https://www.lazyweb.com/growth-score/site/ai-sdk.dev)
2. Mastra — 69
3. [LlamaIndex — 68](https://www.lazyweb.com/growth-score/site/llamaindex.ai)
4. [LangChain (LangGraph) — 67](https://www.lazyweb.com/growth-score/site/langchain.com)
5. [CrewAI — 67](https://www.lazyweb.com/growth-score/site/crewai.com)
6. [Microsoft Semantic Kernel — 59](https://www.lazyweb.com/growth-score/site/learn.microsoft.com)

## Score over time

| Report date | Overall score | Changes or note |
| --- | ---: | --- |
| September 22, 2026 | 69 | Live; Overall +2, CTA +5, Information hierarchy +4 |
| [September 8, 2026](https://www.lazyweb.com/growth-score/history/2026-09-08) | 67 | Overall −1, CTA −5, Information hierarchy −4 |
| [August 25, 2026](https://www.lazyweb.com/growth-score/history/2026-08-25) | 68 | Overall −3, Information hierarchy −6, CTA −4 |
| [August 3, 2026](https://www.lazyweb.com/growth-score/history/2026-08-03) | 71 | Overall +2, Trust +18, Mobile web −18 |
| [July 16, 2026](https://www.lazyweb.com/growth-score/history/2026-07-16) | 69 | Overall −3, CTA −6, Mobile web −6 |
| [July 2, 2026](https://www.lazyweb.com/growth-score/history/2026-07-02) | 72 | Overall +18, Information hierarchy +34, Mobile web +30 |
| [June 12, 2026](https://www.lazyweb.com/growth-score/history/2026-06-12) | 54 | First tracked report; strongest Value props 66, weakest Information hierarchy 38 |

## Mobile web — 62, Fair

This section evaluates the phone experience.

![Mobile web annotations on the mobile capture](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/mastra.ai-mobile.jpg?v=2026-09-22T15%3A51%3A56.121%2B00%3A00)

1. **Clipped announcement banner:** The banner text is cut off at both edges, including the visible fragment `...ning Banking Agents: Arcade & Mastr...`.
2. **Oversized hero graphic:** Tall empty gray placeholder shapes take about a third of the fold and push the primary CTA to the viewport's bottom edge.
3. **Copy agent prompt button:** The primary CTA is at the bottom of the fold, is not full-width, and leaves a small tap target after a long scroll past decoration.

[View mobile fixes](https://www.lazyweb.com/backlog?site=mastra.ai#opt-mobile-web) converts these findings into a prioritized implementation checklist.

## Information hierarchy — 66, Fair

This section asks whether the design helps or inhibits the page's intended message.

![Information hierarchy annotations on the desktop capture](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/mastra.ai.jpg?v=2026-09-22T15%3A51%3A56.121%2B00%3A00)

1. **Copy agent prompt CTA:** A dark, low-contrast pill blends into the black background, while three unexplained icons dilute a CTA that should be understood in one second.
2. **Observability tooltip overlay:** A floating panel covers the trace-waterfall visual, truncates span labels, and competes with the hero's right half.
3. **Announcement banner:** A saturated orange strip has more visual weight than the headline and adds an exit link before the value proposition is read.
4. **Partner logo row:** Six logos, each with a `Read →` link, add six equally weighted exits in the fold.

[View layout plan](https://www.lazyweb.com/backlog?site=mastra.ai#opt-information-hierarchy) turns these callouts into a sequenced keep, move, merge, or remove plan.

## CTA — 68, Fair

We compare Mastra's CTA with competitor examples. Mastra's visible CTA is **“Copy agent prompt.”** The comparison includes:

- Mastra: “Copy agent prompt”
- Vercel AI SDK: `npm install ai`, labeled an in-product action
- LangChain (LangGraph): “Start building”
- Microsoft Semantic Kernel: “Search Microsoft Learn,” labeled an in-product action
- LlamaIndex: “Get started”

### CTA problems

- The payoff is unclear: what is copied, and where?
- Unlabeled icon targets crowd the button.
- The button has a small footprint relative to the headline.
- It competes with the navigation's “Sign Up” label.

### CTA ranking

1. [Vercel AI SDK — 84](https://www.lazyweb.com/growth-score/site/ai-sdk.dev)
2. [LangChain (LangGraph) — 78](https://www.lazyweb.com/growth-score/site/langchain.com)
3. [Microsoft Semantic Kernel — 76](https://www.lazyweb.com/growth-score/site/learn.microsoft.com)
4. [LlamaIndex — 71](https://www.lazyweb.com/growth-score/site/llamaindex.ai)
5. Mastra — 68
6. [CrewAI — 62](https://www.lazyweb.com/growth-score/site/crewai.com)

[Rewrite this CTA](https://www.lazyweb.com/backlog?site=mastra.ai#opt-cta-writing) generates primary and secondary CTA options grounded in Mastra's offer and visitor objections.

## Value props — 72, Fair

The evaluated headline is **“Build AI agents.”** The supporting copy is **“Build, observe, and improve agents that run for days with Mastra, the leading TypeScript agent framework.”**

### Working

- Instant category clarity.
- “Run for days” is a real differentiator.
- The hero shows live traces rather than decoration.

### Could improve

- The headline is generic for the space.
- There are no concrete numbers in the fold.
- There is no emotional hook about agent reliability.

### Value-prop ranking

1. [LlamaIndex — 74](https://www.lazyweb.com/growth-score/site/llamaindex.ai)
2. [CrewAI — 73](https://www.lazyweb.com/growth-score/site/crewai.com)
3. Mastra — 72
4. [Vercel AI SDK — 72](https://www.lazyweb.com/growth-score/site/ai-sdk.dev)
5. [LangChain (LangGraph) — 56](https://www.lazyweb.com/growth-score/site/langchain.com)
6. [Microsoft Semantic Kernel — 38](https://www.lazyweb.com/growth-score/site/learn.microsoft.com)

## Trust — 76, Fair

This section evaluates proof that the product is real, competent, and safe to try.

| Company | Trust read |
| --- | --- |
| Mastra | Customer logo row featuring Salesforce, Marsh, Sanity, SoftBank, WorkOS, and Brex, with “Read” case-study links |
| LangChain (LangGraph) | “Interrupt is coming to London & NYC in the fall!” conference banner |
| Vercel AI SDK | Interactive demo panel with “Text Generation / Image Generation / Speech / Transcription / Video Generation” tabs and a partially captured remainder |
| LlamaIndex | GitHub and Discord icons in the header navigation |
| CrewAI | Embedded product screenshot of the CrewAI workspace, showing an agent-building canvas with a live prompt and the visible text “Access 100s” |
| Microsoft Semantic Kernel | “Microsoft Ignite — November 17–20, 2026” event banner with “Register now” |

### Trust ranking

1. Mastra — 76
2. [Vercel AI SDK — 64](https://www.lazyweb.com/growth-score/site/ai-sdk.dev)
3. [CrewAI — 52](https://www.lazyweb.com/growth-score/site/crewai.com)
4. [Microsoft Semantic Kernel — 44](https://www.lazyweb.com/growth-score/site/learn.microsoft.com)
5. [LlamaIndex — 43](https://www.lazyweb.com/growth-score/site/llamaindex.ai)
6. [LangChain (LangGraph) — 42](https://www.lazyweb.com/growth-score/site/langchain.com)

[Build proof section](https://www.lazyweb.com/backlog?site=mastra.ai#opt-trust-signals) provides copy and placement for a stronger trust section.

## Competitors

These competitors are inferred from product, audience, and value proposition:

1. [Vercel AI SDK — ai-sdk.dev — 74](https://www.lazyweb.com/growth-score/site/ai-sdk.dev)
2. Mastra — 69
3. [LlamaIndex — llamaindex.ai — 68](https://www.lazyweb.com/growth-score/site/llamaindex.ai)
4. [LangChain (LangGraph) — langchain.com — 67](https://www.lazyweb.com/growth-score/site/langchain.com)
5. [CrewAI — crewai.com — 67](https://www.lazyweb.com/growth-score/site/crewai.com)
6. [Microsoft Semantic Kernel — learn.microsoft.com — 59](https://www.lazyweb.com/growth-score/site/learn.microsoft.com)

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