CaptionGo v1.2 Release Notes

CaptionGo v1.2 upgrades real-time AI video subtitles and live bilingual translation across Chrome, Edge, and Firefox (including Android mobile browsers), making it easier to watch unsubtitled videos, online courses, and live streams on YouTube, Twitch, Bilibili, and any website. Alongside Deepgram, CaptionGo now includes Soniox, xAI, and Qwen (Alibaba Cloud) as built-in speech-to-text engines, with full support for adding your own API keys. Soniox native real-time bilingual translation transcribes speech and outputs translated subtitles simultaneously without using AI translation credits. In addition, fixed daily limits are replaced by one-time account quotas and never-expiring top-up packs, so you can watch full-length movies, lectures, and streams without hitting a 30-minute daily cap.

• Soniox, xAI & Qwen AI Speech-to-Text Engines: Now built in alongside Deepgram and ready to generate real-time subtitles on any video or live stream right out of the box; you can also enter your own API key in Settings for unlimited transcription without using your CaptionGo account quota
• Soniox Native Real-Time Bilingual Translation (Zero Translation Credits Used): When using Soniox with bilingual subtitles turned on, Soniox transcribes audio and translates subtitles at the same time (supporting two-way translation, one-way translation, and custom glossaries) without calling external translation APIs or spending AI translation quota
• Multi-Region Server Selection for Lower Latency: Choose the closest server location for Soniox (Japan, US, EU, India), Deepgram (US, EU), and Qwen (Mainland China, Singapore) to minimize live caption delay
• On-Demand Quota Top-Up Packs: Purchase extra AI subtitle minutes (600 / 1,200 / 2,400 min) or AI translation requests (6,000 / 15,000 / 30,000 requests) on our website whenever you need more — top-up credits never expire and stack across purchases

• One-Time Account Quota Replaces Daily Limits: Built-in AI Captions and Cloud AI Translation now use a total account balance instead of a 30-minute daily cap. Your full quota is granted upfront upon sign-up or purchase, and you can check your remaining minutes and translation requests anytime in Settings. Existing PRO members receive the matching pool on the first cloud subtitle or translation request after updating to v1.2.0:
  • Free PRO Trial: 60 minutes of AI Captions + 1,000 AI Translation requests (valid during trial)
  • 1-Year PRO: 480 minutes of AI Captions + 8,000 AI Translation requests (valid for the 1-year plan)
  • Lifetime PRO: 1,200 minutes of AI Captions + 20,000 AI Translation requests (never expires)

• Easier In-Video Controls & Searchable Language Picker: Redesigned the in-player AI Captions menu and top-right status panel so you can search languages and switch speech engines, spoken languages, or capture modes with one click while watching
• Cleaner Sentence Splitting & Instant Display Mode Switching: Splits long continuous speech into readable subtitle lines with less flickering; browser built-in translation now translates sentence by sentence; switching between Bilingual, Original Only, and Translation Only updates on-screen subtitles immediately
• Faster Subtitle Startup & Live Stream Sync: Shortened the wait when auto-starting AI Captions on unsubtitled videos, sped up caption recovery after scrubbing, and improved lip-sync on live streams
• Deepgram Auto Language Locks in Faster: With Deepgram and Auto language, AI Captions show text sooner while the spoken language is confirmed, then continue on the same timeline without a visible gap
• Bilingual Subtitles and AI Captions — One at a Time: AI Captions stop on-page bilingual subtitles and hide site captions when your preference allows; turning bilingual back on stops AI Captions. With both auto bilingual and auto AI Captions enabled, videos with existing subtitles stay bilingual; AI Captions start only when none are available

• Fixed Deepgram Auto language taking too long to confirm or leaving a break between early subtitles and full captions
• Fixed live subtitles occasionally dropping the first words, jumping, or clipping when multi-line bilingual text is shown on the video
• Fixed subtitle timing drift on live streams and when you rewind to an earlier moment
• Skips unnecessary translation when the detected spoken language already matches your target subtitle language