MastraYC W25 landing page report.
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Mastrahttps://mastra.ai/

Your landing page’s weakest score is Mobile web.

How Mastra ranks

  1. 1.Vercel AI SDK74
  2. 2.Mastra69
  3. 3.LlamaIndex68
  4. 4.LangChain (LangGraph)67
  5. 5.CrewAI67
  6. 6.Microsoft Semantic Kernel59
Fix Mobile web
69Growth scoreupdated

category scores

Mobile web62Information hierarchy66CTA68Value props72Trust76
category scoresShowHide
Mobile web62Information hierarchy66CTA68Value props72Trust76

Score over time

80706050LangChain (LangGraph) 64 on May 27 (Wayback)LangChain (LangGraph) 67 on Jun 11 (Wayback)LangChain (LangGraph) 68 on Jun 24 (Wayback)LangChain (LangGraph) 65 on Jul 10 (Wayback)LangChain (LangGraph) 66 on Jul 23 (Wayback)LangChain (LangGraph) 67 on Jul 28 (Live)LangChain (LangGraph) 70 on Aug 9 (Wayback)Vercel AI SDK 74 on Jun 2 (Wayback)Vercel AI SDK 74 on Jun 17 (Wayback)Vercel AI SDK 72 on Jun 28 (Wayback)Vercel AI SDK 72 on Aug 5 (Wayback)Vercel AI SDK 70 on Aug 14 (Wayback)Vercel AI SDK 74 on Sep 8 (Wayback)Vercel AI SDK 74 on Sep 22 (Live)LlamaIndex 68 on May 4 (Wayback)LlamaIndex 67 on May 22 (Wayback)LlamaIndex 67 on Jun 5 (Wayback)LlamaIndex 67 on Jun 18 (Wayback)LlamaIndex 69 on Jun 30 (Wayback)LlamaIndex 67 on Jul 11 (Wayback)LlamaIndex 68 on Jul 28 (Live)CrewAI 74 on Feb 12 (Wayback)CrewAI 74 on Feb 28 (Wayback)CrewAI 74 on Mar 10 (Wayback)CrewAI 67 on Jul 28 (Live)Microsoft Semantic Kernel 59 on Sep 22 (Live)Mastra 54 on Jun 12 (Wayback)Mastra 72 on Jul 2 (Wayback)Mastra 69 on Jul 16 (Wayback)Mastra 71 on Aug 3 (Wayback)Mastra 68 on Aug 25 (Wayback)Mastra 67 on Sep 8 (Wayback)Mastra 69 on Sep 22 (Live)Jun 12Jul 2Jul 16Aug 3Aug 25Sep 8Sep 22
Past reportsShow past reportsHide past reports
  1. Sep 22, 202669LiveOverall +2 · CTA +5 · Information hierarchy +4Viewing
  2. Sep 8, 202667Overall −1 · CTA −5 · Information hierarchy −4View →
  3. Aug 25, 202668Overall −3 · Information hierarchy −6 · CTA −4View →
  4. Aug 3, 202671Overall +2 · Trust +18 · Mobile web −18View →
  5. Jul 16, 202669Overall −3 · CTA −6 · Mobile web −6View →
  6. Jul 2, 202672Overall +18 · Information hierarchy +34 · Mobile web +30View →
  7. Jun 12, 202654First tracked report — strongest Value props 66, weakest Information hierarchy 38View →

Mobile web

62Fair

The phone experience as a first-class citizen.

Mobile web annotations on the mobile capture123
  1. Clipped announcement banner — Banner text is cut off on both edges ("...ning Banking Agents: Arcade & Mastr..."), reading as a rendering bug in the first thing visitors see.
  2. Oversized hero graphic — A tall graphic of empty gray placeholder shapes consumes a third of the fold and pushes the primary CTA to the viewport's bottom edge.
  3. Copy agent prompt button — The primary CTA sits at the very bottom of the fold and is not full-width, leaving a small tap target after a long scroll past decoration.

Information hierarchy

66Fair

Does the design help or inhibit what the page is trying to say?

Information hierarchy annotations on the desktop capture1234
  1. Copy agent prompt CTA — Dark low-contrast pill blends into the black background; three unexplained icons dilute a CTA that should read in one second.
  2. Observability tooltip overlay — Floating panel covers the trace-waterfall visual mid-row, truncating span labels and adding a competing block to the hero's right half.
  3. Announcement banner — High-saturation orange strip outranks the headline in visual weight and adds an exit link before the value prop is read.
  4. Partner logo row — Six logos each with their own 'Read →' link creep into the fold, adding six exits at equal weight.

CTA

68Fair

Copy, size, verb, cost-feel — does the primary CTA earn the click?

Mastra
Vercel AI SDKin-product action
LangChain (LangGraph)
Microsoft Semantic Kernelin-product action
LlamaIndex

Problems

  • payoff unclear — copy what, to where?
  • unlabeled icon targets crowd the button
  • small footprint vs headline
  • competes with nav Sign Up label

Value props

72Fair

Title, subtitle, hero — do they sell the product's true value?

Mastra’s headline undersellsBuild AI agentsBuild, 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
  • Hero shows live traces, not decoration

Could improve

  • Headline is generic for the space
  • No concrete numbers in the fold
  • No emotional hook on agent reliability

Trust

76Fair

Proof that the product is real, competent, and safe to try.

Trust read
MastraCustomer logo row: Salesforce, Marsh, Sanity, SoftBank, WorkOS, Brex with "Read" case-study links
LangChain (LangGraph)'Interrupt is coming to London & NYC in the fall!' conference banner
Vercel AI SDKInteractive demo panel with "Text Generation / Image Generation / Speech / Transcription / Video Generation" tabs and a
LlamaIndexGitHub and Discord icons in the header navigation
CrewAIEmbedded product screenshot of the CrewAI workspace showing an agent-building canvas with a live prompt and "Access 100s
Microsoft Semantic Kernel"Microsoft Ignite — November 17–20, 2026" event banner with Register now

Competitors

inferred from product, audience, and value prop
#1Vercel AI SDKai-sdk.dev74
#2Mastra69
#3LlamaIndexllamaindex.ai68 #4LangChain (LangGraph)langchain.com67 #5CrewAIcrewai.com67 #6Microsoft Semantic Kernellearn.microsoft.com59