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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.

Olly 2.0 logo
Olly 2.0
✓ verifiedFreemium

Browser-extension AI agent that drafts comments, replies and viral-post ideas to speed up social-media engagement.

30K visits/mo
Comment Generator logo
Comment Generator
✓ verifiedFree trial

Browser extension that drafts tailored comments for Instagram, LinkedIn and Threads to speed up social engagement.

15K visits/mo131K saves
WriteCap logo
WriteCap
✓ verifiedPaid

Generates social captions; thin single-purpose caption tool.

1.1K saves
Pricing
Free Forever: $0 (20 comments/day)
Monthly: $9.99/user/mo (100 LLM credits, all features)
Pro: $9.99/mo per platform (1,500 comments/mo)
Unlimited: $29.99/mo per platform (unlimited comments)

Free trial available

Free: $0
Basic: $11
Pro: $50

No public pricing

Core features
  • One-click AI comment and reply generation
  • Virality predictor for posts
  • Auto comment, auto like and scheduling
  • Works across many social platforms
  • Bring-your-own model keys (GPT, Claude, Gemini, local)
  • Custom brand voice and AI personalities
  • Generates comments from the post's caption
  • Selectable tones and styles
  • Review and edit before posting
  • Works on Instagram, LinkedIn and Threads
  • Multi-language support
  • Chrome browser extension
  • AI-powered caption generation
  • Personalized captions based on user input
  • Support for various social media platforms
  • AI-powered photo analysis and trend matching
  • Multiple AI personas with unique voices and custom knowledge sources
  • Real-time trend detection
  • Performance insights for content optimization
  • Smart content generation combining visuals, trends, and persona knowledge
Use cases
  • Engaging faster on social platforms
  • Growing reach through consistent commenting
  • Predicting which posts may go viral
  • Maintaining a consistent brand voice at scale
  • Boost engagement on social posts
  • Save time replying to others' content
  • Support social media managers and creators
  • Generating engaging captions for personal social media posts
  • Creating captivating descriptions for real estate listings
  • Crafting compelling captions for fashion and beauty content
  • Building excitement and anticipation for event marketing
  • Generating social media posts from photos automatically
  • Creating on-trend content for various social platforms
  • Maintaining a consistent brand or personal voice across all posts
  • Optimizing content strategy based on engagement data
  • Transforming camera roll photos into viral content
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