Baidu AI Cloud Speech Technology Free Test Resources (50 thousand short-audio recognitions + 10 hours of real-time recognition + 10 hours of audio transcription)
Baidu AI Cloud
Claim after completing personal real-name verification: 50 thousand calls of short-audio recognition standard edition (Mandarin Chinese), 10 hours of real-time speech recognition, 10 hours of audio-file transcription (10 hours each for Chinese / English / audio-video subtitles), 500 thousand tokens each for the end-to-end speech-language large model Lite / Pro, and 50 thousand characters of large-model voice-cloning online synthesis; enterprise verification gets higher quotas
The official "Free test resources" doc (updated 2026-07-14) lists them per API, comparing personal and enterprise verification: short-audio recognition standard edition - Mandarin Chinese 50 thousand calls (5 concurrency) / 100 thousand calls (10 concurrency); standard edition - English, Cantonese, and Sichuan dialect 30 thousand calls / 50 thousand calls each; short-audio recognition express edition 50 thousand calls; real-time speech recognition - Mandarin Chinese and English 10 hours each (personal 3 concurrency, enterprise 5 concurrency); audio-file transcription - Mandarin Chinese, English, and audio-video subtitles (Chinese) 10 hours each (same for personal and enterprise); call-center speech - audio-file transcription / audio-file quality inspection 10 hours each; end-to-end speech-language large model (Lite, Pro) 500 thousand tokens personal, 1000 thousand tokens enterprise, search enhancement 1000 calls personal; large-model voice cloning - voice creation 10 times personal, online synthesis 50 thousand characters personal; basic voice library 50 thousand calls personal. The official purchase guide says: every API comes with a certain free call allowance for testing, and once it is exceeded you must choose a payment method in the console to activate paid usage.
Free quotas differ between "personal verification" and "enterprise verification": personal verification requires uploading an ID card and entering your real name and ID number, while enterprise verification requires a business license and other materials and usually takes 1 to 3 business days to review (the verification process comes from secondhand descriptions of the Baidu AI Cloud help docs, so go by the console). The official "Free test resources" table does not state a validity period for the free quota; secondhand sources say it is valid long-term, and this entry conservatively treats it as volatile; after claiming, go by what the console resource-pack page shows. Once the free quota is exceeded you must activate paid usage yourself, and without doing so you cannot keep calling.