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Bitcoin Lightning Payments — No Signup, No Credit Card

Bitcoin Speech Transcription

10 sats per minute — audio to text instantly

Upload an audio file and get accurate text transcription back. Supports MP3, WAV, FLAC, OGG, and M4A. Up to 60 minutes per file with segment and word-level timestamps. Pay with Bitcoin Lightning — no signup required.

Transcribe Audio Now

13 Languages

English, Chinese, Hindi, Spanish, Arabic, French, Portuguese, Russian, German, Japanese, Korean, Italian, and Dutch.

Timestamps & Segments

Get word-level and segment-level timestamps. Export as .txt or .srt subtitle files.

Up to 60 Minutes

Process audio files up to 60 minutes long. Supports MP3, WAV, FLAC, OGG, and M4A formats.

How It Works

1

Choose Your Tool

Pick the AI tool you need from the dashboard. No account creation, no email verification, no credit card on file. Just open the tool and start using it.

2

Pay with Bitcoin Lightning

A Lightning invoice is generated for the exact amount in satoshis. Scan it with any Lightning wallet — Phoenix, Muun, Wallet of Satoshi, Alby, or any other. Payment confirms in under a second.

3

Get Your Result

Your result is delivered after payment. Sats4AI creates no account-linked usage history, but keeps transaction and limited operational or abuse-prevention records. Providers needed to run the tool process request data under their own policies.

What You Can Do

Audio to TextWord-Level TimestampsSRT Subtitle Export13 LanguagesSpeaker DiarizationUp to 3 HoursL402 API AccessMCP Server

Why Sats4AI?

Lightning Fast Payments

Scan a Lightning invoice, pay in sats, and start generating instantly. No waiting for credit card authorization or bank transfers. Payments settle in under a second on the Lightning Network.

No Account Profile

No signup or KYC. Pay per request without creating an account. Sats4AI keeps transaction and limited operational or abuse-prevention records; providers needed to run the tool process request data under their own policies.

Pay Per Use — No Subscriptions

Only pay for what you use. No monthly fees, no minimum commitments, no unused credits expiring. One satoshi payment per request, priced transparently in sats.

For Developers and AI Agents

Every tool on Sats4AI is available programmatically. Build applications that pay for AI with Bitcoin, or connect your AI assistant directly.

L402 API

Access every tool via HTTP with Lightning-authenticated L402 payments. No API keys needed — just pay the invoice attached to each request.

View L402 docs →

MCP Server

Connect AI assistants like Claude, Cursor, and Windsurf directly to Sats4AI tools using the Model Context Protocol. One line of config.

View MCP setup →

Agent-Ready

Built for autonomous AI agents. Machine-readable pricing, enum-based parameters, and instant micropayments let agents discover and use tools without human intervention.

View OpenClaw guide →
Read: How to Transcribe Audio with Bitcoin Lightning
10 sats
per minute
≈ $0.01 USD/min
Try It Now