Speechify

AssemblyAI

Freemium

AssemblyAI sells speech models through an API rather than a consumer app. Developers send a file or live stream and get transcripts with timestamps, speaker labels, formatting and confidence scores; other endpoints summarize calls, detect topics and sentiment, or redact personal data. Its Universal speech models cover 99 languages, and a newer text-to-speech model targets voice agents. Billing runs per hour of audio processed, starting at roughly $0.15 per hour for pre-recorded transcription. The free tier covers about 185 hours of pre-recorded audio and 333 hours of streaming before charges begin.

Murf AI

Free trial

Murf combines a browser voiceover editor with a speech API. In the studio you paste a script, assign a voice to each paragraph, adjust pitch, pace and emphasis, then export audio for video or e-learning. It offers over 200 voices across 30+ languages, plus AI dubbing for existing footage. The API exposes text-to-speech billed per 1,000 characters, speech-to-text at $0.24 an hour, voice changing and translation, with $10 of trial credit. Studio plans start at Creator; Business adds 96 hours of generation, 48 hours of transcription and a business license for teams.

Udio

Freemium

Udio turns a written prompt into a finished track with sung vocals, then lets you revise it instead of starting over. You can extend a section, remix a song, upload your own audio to transform, or feed in a reference track to steer the style. Voice Control and saved voices keep a singer consistent across tracks, and the lyric editor fixes words without regenerating everything. The free plan gives 100 credits a month and three full-length songs a day. Standard removes that daily cap and unlocks uploads, editing and cover art.

Suno

Freemium

Suno generates complete songs, vocals included, from a text description. You type a style prompt and optional lyrics, and the model returns variations you can extend, cover, or remix. Paid plans add stem separation, custom models built from your own uploaded recordings, and Suno Studio, a browser editor with MIDI, effects and automation. Free accounts get 50 credits a day but no downloads or commercial rights. Pro grants commercial use, 20 song downloads a month, a priority queue and two stem types, while Premier raises credits to 10,000 and unlocks advanced stem splitting.

Wordtune

Freemium

Wordtune works at sentence level. Instead of generating whole documents, it offers several rewrite options for the sentence you just wrote, along with switches for formal or casual tone and corrections for grammar, spelling and phrasing. It also continues a stalled paragraph, suggests synonyms and translates text into English across ten languages. Most people use it through the Chrome extension inside Gmail, docs or a CMS, and a web editor covers everything else. The Basic plan is free with limits; Advanced costs $6.99 per month, and a three-day trial covers the paid tiers.

ElevenLabs

Freemium✦ Featured

ElevenLabs is a voice AI platform for generating natural-sounding speech from text. Its text-to-speech models produce expressive narration in dozens of languages, and voice cloning lets creators build a consistent voice from a short sample. The studio editor supports long-form projects, pronunciation control and multi-speaker dialogue. Beyond narration, the platform offers speech-to-speech conversion, automatic dubbing for video and sound effects generation. APIs and SDKs make it easy to add voice to apps and agents. Free usage is limited; paid plans scale by characters and add professional voice cloning. It is widely used for audiobooks, podcasts, YouTube narration and conversational AI products.