YouTube Summary & ChatGPT by Glasp vs Izlo

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

	YouTube Summary & ChatGPT by Glasp Agents	Izlo Agents
Tagline	Chrome extension that surfaces YouTube transcripts and AI-generated video summaries alongside one-click access to ChatGPT.	Prompt management platform with version control, collaboration, and an API for production deployment.
Category	Agents	Agents
Pricing	Freemium· Free with in-app purchases	Paid· Solo $20/mo; Pro $25/user/mo; Enterprise $39/user/mo
Model	Multi-model (GPT-3.5, GPT-4, Claude, Mistral, Gemini)	Model-agnostic
Editorial score	6.9 / 10	6.9 / 10
Use cases	youtube-summarizationtranscript-extractionbrowser-chatgptresearch-notes	prompt-managementversion-controlteam-collaborationprompt-testingproduction-deployment
Pros	Free with broad model choice (GPT-4, Claude, Gemini, Mistral) Timestamp-linked summaries jump back into the video Customizable summary length and prompts Multi-language transcript and summary support	Git-style version history and activity log for every prompt change Remix sandbox isolates experiments from production prompts REST API lets you swap prompts without redeploying the app Built for multi-user team editing, not just solo developers
Cons	3.9-star rating reflects inconsistent reliability Premium pricing not disclosed on store page Funnels into Glasp's wider highlighting product Depends on YouTube having a usable transcript	No free tier; cheapest plan is $20/mo Stingy token allowance (5K/seat) for in-app testing Lighter on observability/analytics than Langfuse or Helicone Supported model providers not clearly listed on the site
Website	chromewebstore.google.com	getizlo.com

Pick YouTube Summary & ChatGPT by Glasp if

✅ Free with broad model choice (GPT-4, Claude, Gemini, Mistral)
✅ Timestamp-linked summaries jump back into the video
✅ Customizable summary length and prompts
✅ Multi-language transcript and summary support

Pick Izlo if

✅ Git-style version history and activity log for every prompt change
✅ Remix sandbox isolates experiments from production prompts
✅ REST API lets you swap prompts without redeploying the app
✅ Built for multi-user team editing, not just solo developers

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