Caption & Subtitle Pro Suite

Caption & Subtitle Pro Suite — Caption everything with one API: generate subtitles and export SRT and VTT, transcribe audio, translate video, and produce image alt-text.

💬 Audio + AI

🚀 Newcomer launch pricing — limited-time introductory rates while we earn our first reviews.

Built for video and media teams, accessibility and localization teams.

Why this exists

Captioning across formats and languages means separate transcription, subtitle, translation, and alt-text tools.

What you get

One API key transcribes, subtitles, translates, and writes alt-text — the captioning pipeline.

Endpoints (6 total)

• POST /v1/subtitles/generate
• POST /v1/subtitles/srt
• POST /v1/subtitles/vtt
• POST /v1/audio/transcribe
• POST /v1/video/translate
• POST /v1/image/alt-text

Sample request

curl -X POST https://api-caption-suite.knowlez.com/v1/subtitles/generate -H "X-API-Key: <your-key>" -H "Content-Type: application/json" -d '{}'

Pricing

• Starter — $9/mo · 300 ops included · $0.05/op overage
• Pro — $39/mo · 3,000 ops included · $0.025/op overage
• Scale — $149/mo · 30,000 ops included · $0.01/op overage

Swagger / OpenAPI: api-caption-suite.knowlez.com/docs