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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.
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Immersive Translate
✓ verifiedFreemium
Popular free bilingual AI translator for web pages, PDFs, videos and images, wrapping 20+ engines like DeepL and GPT.
5.4M visits/mo6.7K saves
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SlideSpeak AI
✓ verifiedFreemium
AI platform that converts PDFs, Word, Excel, or text into editable native PowerPoint decks with an in-app AI assistant.
765K visits/mo26K saves
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Verbatik
✓ verifiedFreemium
AI voice platform for text-to-speech, voice cloning, and related video/music/image generation, for creators and developers via app or API.
42K visits/mo
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supermemory™
✓ verifiedFreemium
Developer API that gives AI agents persistent memory, retrieval, and connectors, usable both as infrastructure and a personal app.
174K visits/mo
Pricing
No public pricing
Free: $0 (100 credits at sign-up, 50MB file size limit)
Premium: $29/month (1,000 credits/month, no file size limit)
Custom template add-on: $129 one-time
Pro: $39/mo (2,250,000 credits/mo, discounted from $69/mo)
Pay As You Go API: $20 per 1,000,000 characters ($0.000025/character)
Free trial available
Free: $0/mo (~$5/mo of usage included)
Pro: $19/mo (~$20/mo of usage, unlimited storage, 2 teammates)
Max: $100/mo (~$130/mo of usage, 6x Pro headroom)
Scale: $399/mo (~$600/mo of usage, up to 10 teammates)
Core features
- ✦Side-by-side bilingual web translation
- ✦Layout-preserving PDF and ePUB translation
- ✦Video subtitle and live-meeting translation
- ✦Image and comic translation
- ✦20+ engines incl. DeepL, GPT, Gemini, DeepSeek
- ✦Browser extensions and iOS/Android apps
- ✦Generate presentations from PDF, Word, Excel, website, or text input
- ✦AI assistant 'Charles' for rewriting, summarizing, and image generation
- ✦AI-narrated video presentations with 50+ voices
- ✦Automatic brand styling with custom templates
- ✦Multi-language translation preserving slide layout
- ✦API for programmatic presentation generation
- ✦Text-to-speech across 150+ languages with 1,000+ neural voices
- ✦Voice cloning from a short audio sample
- ✦AI video, music, and sound-effect generation in the same dashboard
- ✦Auto-generated animated captions/subtitles
- ✦Developer API for TTS and voice cloning with per-character billing
- ✦Commercial usage license included on paid plans
- ✦Persistent, structured memory built as a knowledge graph
- ✦Sub-300ms hybrid retrieval (RAG) with reranking
- ✦Native filesystem mount for agent memory access
- ✦Connectors to Slack, Notion, Drive, Gmail, GitHub, S3
- ✦Automatic extraction from PDFs, images, and audio
- ✦User profile and behavior tracking across sessions
Use cases
- →Reading foreign-language websites and papers
- →Translating PDFs while keeping formatting
- →Watching videos with bilingual subtitles
- →Translating images and comics
- →Turning a report or spec document into a client-ready deck
- →Summarizing long PowerPoint or PDF files
- →Producing narrated video versions of a presentation
- →Applying consistent branding across many decks
- →Podcasters and video creators needing multilingual voiceovers
- →Developers integrating TTS or voice cloning via API into apps
- →Marketers producing UGC-style AI avatar ads and captions
- →Developers adding long-term memory to AI agents
- →Teams building agents that need to sync with existing tools
- →Individuals wanting one memory layer shared across multiple AI assistants
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