Free online tool to convert text into natural speech using 28 Grok AI voices in 20 languages
AI scientific figure generator for illustrations, charts and flowcharts
Stage
Not given
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Founded
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Based in
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GB
Pricing model
Freemium
Freemium
Pricing
Free tier: 3 previews per day (200 characters each) without account; free Google sign-in offers 1,000 characters per clip, 20 clips per hour, 3,000 characters per day. Paid plans available for longer clips and more characters.
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Key features
28 Grok voices
Speech tags for pauses, laughs and whispers
Download as MP3 audio file
Speed adjustment from 0.7× to 1.5×
26 speech expression tags
Free preview without account
Auto-detect language mode
No text storage or logging
Multiple account sign-in options
Sketch-to-Figure: convert hand-drawn sketches into editable scientific illustrations
Reference-to-Figure: create illustrations from reference images and papers
PDF-to-Figure and Photo-to-Figure input modes
DataChart: 50 chart types plotted from CSV and Excel data
FlowChart: editable diagrams for PRISMA, CONSORT, model architectures and workflows
Export as editable PPTX, layered SVG and 8K PNG/JPG
Region redraw and AI editing without regenerating entire figure
Vector Canvas: edit any figure as layered, editable SVG
Publication license certificate for each figure with QR verification
What makes it different
Independent frontend: no developer account needed to access real Grok voices
All 28 official Grok voices in one tool
Built-in speech tags for natural expression control
Cheaper than ElevenLabs and comparable to OpenAI pricing
Same voices available for text-to-speech and voice agents
Every figure stays editable after generation, not flat raster output like general image generators
One credit buys creation and editing across all three workspaces: Illustration, DataChart and FlowChart
Grok Text to Speech
SciFig