1
Cartesia
play.cartesia.aiAlso covers speech and speech synthesis
Cartesia’s playground lets developers try text to speech, speech to text, and low latency voice agents.
Alternatives
The Best OpenAI.fm Alternatives in 2026
24 alternatives4 free · 1 open source
Looking for something like OpenAI.fm? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 4 are free or have a free plan and 1 are open source.
OpenAI.fm offers an interactive developer demo for the text to speech model in OpenAI’s API.
Top picks at a glance
First suggestionCartesiaCartesia’s playground lets developers try text to speech…Free or freemium optionTTS OnlineTTS Online converts text into speech with more than 100…Open source optionZonos2Generate speech from text with Zonos2, an open-weight…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Cartesia | — | Not stated | Web |
| 2 | Zonos2 | — | Yes | — |
| 3 | CereProc | — | Not stated | Web |
| 4 | TTS Online | Free | Not stated | Web |
| 5 | Voice.ai | Freemium | Not stated | Web |
| 6 | Voicemaker | — | Not stated | Web |
| 7 | Ondoku | Free | Not stated | Web |
| 8 | Woord | — | Not stated | Web |
| 9 | Gemini TTS | — | Not stated | Web |
| 10 | AnyVoiceLab | — | Not stated | Web |
All OpenAI.fm alternatives
2
Also covers speech and speech synthesis · open source
Generate speech from text with Zonos2, an open-weight mixture-of-experts model.
3
CereProc
capacity.com/text-to-speech-software?company=c…Also covers api, speech, and speech synthesis · same kind of online tool
CereProc develops neural text to speech software for turning text into spoken voice.
4
Also covers speech and speech synthesis · same kind of online tool · free
TTS Online converts text into speech with more than 100 voices in 27 languages and MP3 downloads.
5
Also covers speech and speech synthesis · same kind of online tool · free plan
Voice.ai provides AI voice agents, a voice changer and text-to-speech tools, with APIs and SDKs for scalable speech applications.
6
Voicemaker
voicemaker.inAlso covers speech and speech synthesis · same kind of online tool
Voicemaker converts text to speech with more than 2,000 AI voices in 130 languages and lets users download audio in MP3 or WAV format.
7
Also covers speech and speech synthesis · same kind of online tool · free
Ondoku converts text to speech and can save the resulting audio as MP3 files.
8
Woord
getwoord.comAlso covers speech and speech synthesis · same kind of online tool
Woord converts text to speech with more than 100 voices and provides MP3 downloads and a text-to-speech API.
9
Gemini TTS
geminitts.netAlso covers speech and speech synthesis · same kind of online tool
Gemini 3.1 TTS converts text to expressive speech, with more than 70 languages and 30 voices listed on its page.
10
AnyVoiceLab
anyvoicelab.com/long-form-text-to-speech-conve…Also covers speech and speech synthesis · same kind of online tool
AnyVoiceLab converts long passages of text into speech, with support for up to 50,000 characters.
11
Also covers speech and speech synthesis · same kind of online tool
beepbooply converts text to speech using more than 900 voices across 80 languages and lets users download the generated audio.
12
Dubverse
dubverse.aiAlso covers speech and speech synthesis · same kind of online tool
Dubverse provides video dubbing, text-to-speech, automatic subtitles, and an API for multilingual content production.
13
ElevenReader
elevenreader.ioAlso covers speech and speech synthesis · same kind of online tool
ElevenReader reads text, ebooks, PDFs, and audiobooks aloud with text to speech voices.
14
Text To Speech Client
huggingface.co/spaces/Xenova/text-to-speech-cl…Also covers speech and speech synthesis · same kind of online tool
This web app converts entered text into spoken audio for immediate listening.
15
VoicePal
voicepal.orgAlso covers speech and speech synthesis · same kind of online tool
VoicePal reads documents, text and web articles aloud using offline voices in multiple languages, with apps listed for Windows, Mac and Android.
16
VanillaVoice
vanillavoice.comAlso covers speech and speech synthesis · same kind of online tool
VanillaVoice reads text aloud using a selection of human sounding voices.
17
AI Voice Generator
aivoicegenerator.orgAlso covers speech and speech synthesis · same kind of online tool
A free AI voice generator that generates natural sounding text-to-speech voice overs.
18
Voxify
voxify.aiAlso covers speech and speech synthesis
Voxify generates speech from text with more than 450 voice options and controls for pitch, speed and emotion.
19
WellSaid
wellsaid.ioAlso covers speech and speech synthesis
WellSaid generates voiceovers with AI voices in different dialects and production styles.
20
Also covers speech and speech synthesis · free
Balabolka offers freeware text to speech software for converting written text into spoken audio.
21
Voice Dream
voicedream.comAlso covers speech and speech synthesis
Voice Dream Reader uses text-to-speech to read PDFs, web pages, and books aloud.
22
VoiceCraft
github.com/jasonppy/VoiceCraftAlso covers speech and speech synthesis
VoiceCraft supports zero-shot speech editing and text-to-speech generation.
23
Text To Speech
huggingface.co/spaces/deep-div/Text-To-SpeechAlso covers speech synthesis · same kind of online tool
This demo turns entered text into speech and provides an audio file for playback.
24
Text To Speech
huggingface.co/spaces/amphion/Text-to-SpeechAlso covers speech synthesis · same kind of online tool
This demo converts entered text into spoken audio with selectable voice options.
No alternatives match this filter.
Alternatives to similar tools
Text To Speech Client24 alternativesVoice.ai24 alternativesVoice Dream24 alternativesZonos224 alternativesTTS Online24 alternativesElevenReader24 alternatives
What is the best alternative to OpenAI.fm?
Based on features, tags and platforms, the closest alternatives to OpenAI.fm are Cartesia, Zonos2, and CereProc.
Is there a free alternative to OpenAI.fm?
Yes. TTS Online, Voice.ai, and Ondoku are free or offer a free plan.
Are there open-source alternatives to OpenAI.fm?
Yes: Zonos2.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative