HHeyGenAI video and voice generationHeyGen Voice Turbo text-to-speech free on the HeyGen API (through November 30, 2026)HeyGen's Turbo Free text-to-speech model, heygen-voice-1-turbo-free, can be called at no cost through November 30, 2026, with no credit balance needed. It runs on shared capacity with no availability guarantee.Free planOfficialFreeEnds Nov 30Verified Oct 23View dealfor HeyGen (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)
TwilioAPIs for SMS, voice, email and verificationTwilio free trial: free SMS, email and voice units for 30 daysTwilio trial accounts include product-specific free units, such as 100 SMS messages, 3,000 emails and 75 voice minutes, and expire after 30 days. Upgrading adds a fresh set of free units.Free trialOfficialNew customers onlyFree units such as 100 SMS, 3,000 emails and 75 voice minutesUnverifiedView dealfor Twilio (opens provider site in a new tab)
ElevenLabsAI voice and text-to-speechElevenLabs Free plan: 10,000 credits a monthElevenLabs' Free plan includes 10,000 credits a month for its voice AI tools, for non-commercial use with attribution.Free planOfficialFreeUnverifiedView dealfor ElevenLabs (opens provider site in a new tab)
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)
ElevenLabsAI voice and text-to-speechElevenLabs Startup Grants: 12 months free and 33M charactersStartups with fewer than 25 employees can apply for an ElevenLabs grant of 12 months free with 33M characters, which ElevenLabs puts at over 680 hours of Conversational AI audio.Startup perkOfficialAvailable worldwideApproval needed12 Months free, 33M CharactersVerified Oct 23View dealfor ElevenLabs (opens provider site in a new tab)