Real-time AI copilot that listens to your call and tells you what to say next
Stage
Established
Not given
Founded
Not given
Not given
Based in
DE
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Pricing model
Freemium
Not given
Pricing
Not given
Free: one 5-minute live session, no card required. Sayble Pro: $39.99/month (or $24.99/month for first 12 months with founder code). Sayble Teams: custom pricing.
Key features
Hierarchical traces capture every LLM call, tool invocation, and retrieval step
LLM-as-a-judge, heuristic functions, or human review evaluations
Prompt management with one-click deployments and rollbacks
Playground to test prompts on real production inputs and compare models
Experiments with test cases and side-by-side comparison
Human annotation and collaborative human-in-the-loop workflows
Cost and latency monitoring with dashboards and alerts
REST APIs and Query SDK for data access
Langfuse Assistant to automate the AI engineering loop
One line to say next plus a backup during a live call
Live transcription of both sides, labelled by speaker
Recap and follow-up email drafted from the transcript when the call ends
Plain-language questions across your past calls
Custom modes with your own reference files (pitch decks, pricing sheets, playbooks, PDFs, CSVs)
Works on Zoom, Google Meet, Microsoft Teams, Slack huddles and phone calls
10 languages, auto-detected
Built to stay off screen shares
Available on Mac and Windows
What makes it different
MIT licensed open source platform with no data lock-in
Enterprise scale architecture handling billions of monthly events
Works with any language and framework with no framework lock-in
Async by default so tracing never blocks your application
Suggests the exact words to say next in real time during the call
Automatically writes recap and follow-up email before you hang up
Query all your past conversations in plain language to find patterns
Built by operators who close calls, not by committee
Sayble