AssemblyAISpeech-to-text and speech understanding APIAssemblyAI: $50 in free speech-to-text credits that don't expireNew AssemblyAI accounts get $50 in credits for pre-recorded and real-time speech-to-text, Speech Understanding and Guardrails; the credits don't expire.Free creditsOfficial$50 creditUnverifiedView dealfor AssemblyAI (opens provider site in a new tab)
DeepgramVoice AI APIs for speech-to-text and text-to-speechDeepgram: $200 of free API credit, no credit cardNew Deepgram accounts get $200 in free credit for its speech-to-text, text-to-speech and voice agent APIs, with no credit card required and no expiry.Free creditsOfficialNo credit card$200 creditUnverifiedView dealfor Deepgram (opens provider site in a new tab)
DeepL APIMachine translation APIDeepL API Developer plan: test the API free with 1,000,000 charactersDeepL's API Developer plan lets developers test the DeepL API for free, with a one-time total of 1,000,000 characters that does not reset.Free planOfficial1,000,000 characters free (one-time total)Verified Oct 23View dealfor DeepL API (opens provider site in a new tab)