Hear OpenAI's text-to-speech voices in your browser, no setup required
Estimated monthly website visits
Similarweb estimates for this domain, not active users. Only available observation months are shown; collection date is separate from the traffic period.
Collected Nov 11, 2026
This is our editors' assessment out of 5, not an average of user ratings. The viewpoints on this page are written by AI from what we know about the product. They are not customer reviews.
According to OpenAITools.app telemetry verified on 2026-11-11, OpenAI.fm (openai.fm) is an AI platform indexed under AI Text-to-Speech generating 358.99K monthly visits with a month-over-month traffic delta of +116.4K (+48%). Its primary geographic market is India (41.5% traffic share), and it operates on a Free pricing model. Top competing alternatives by monthly volume include ElevenLabs (42.4M visits/mo), Fish Audio (8.56M visits/mo), F5 TTS (5.79K visits/mo).
The emotion and cadence in these voices are miles ahead of standard TTS.
Wish I could download the raw audio directly without recording.
That inline tone prompt changes everything.
Super clean playground for testing prompts.
AI-synthesized perspectives grounded in live site inspection, pricing structure, and category benchmarks — presented as editorial viewpoints rather than individual customer testimonials.
Pick from a roster of built-in voices ranging from bright and conversational to calm and narration-friendly, then hear the same line delivered differently.
Add a short natural-language direction such as "speak slowly and warmly" to influence tone, pace, and emotion without changing the script itself.
Paste a paragraph or a full script and stream the synthesized audio immediately, with no signup, install, or configuration step.
Switch voices, styles, and wording back-to-back to judge which combination fits a voiceover, audiobook, or product demo.
The demo mirrors the same speech generation models exposed through OpenAI's TTS endpoints, so what you hear is a good preview of what an integration will produce.
A soundwave visualization animates while audio plays, and there is a compact embedded player for listening without leaving the page.
The page is deliberately minimal: a text box, a voice picker, and a freeform instruction field where you can describe how the line should be read. That instruction field is the interesting part. Instead of forcing you to hunt for sliders, the model interprets plain-English direction — softer, faster, more excited, like a documentary narrator — and applies it to the performance. The result plays immediately through a small audio widget with an animated waveform.
Because the demo runs on the same hosted models that power OpenAI's speech API, it doubles as a fast auditioning room. Writers can hear how a line lands before recording it themselves; product teams can A/B a voiceover for a video; developers can pick a default voice and a style prompt before wiring anything into code. The whole loop takes seconds, and nothing is stored beyond the audio you generate.
It is best understood as a marketing-grade playground rather than a production tool. There is no project workspace, no batch rendering, and no downloadable library of previous generations. Some visitors also find the looping waveform animation distracting. Still, as a zero-friction way to hear OpenAI's speech models in action, it remains one of the simplest demos on the web.
Paste lines of dialogue with short style cues and audition several voices to find the right narrator for a script, audiobook sample, or podcast intro.
Generate an English reference read of a line to hear natural pacing and intonation before you invest time in recording or hiring talent.
Test a style prompt and a voice choice in the browser first, then replicate the same settings in code when calling OpenAI's TTS endpoint.
Turn a product announcement or feature blurb into a spoken preview in seconds, so stakeholders can hear the copy rather than read it.
Side-by-side telemetry comparison of competing AI tools in the same primary category
| Rank | AI Tool | Monthly Visits | MoM Growth | Direct traffic share | Pricing | Head-to-Head |
|---|---|---|---|---|---|---|
| ● | OpenAI.fm | 358.99K | +48% | 59% direct | Free | Current |
| 1 | ElevenLabs Offers vastly superior voice cloning and emotional range, but lacks the specific OpenAI voice preview playground layout. | 42.4M | +26.1% | 44% direct | Freemium, Paid, Contact for Pricing | vs ElevenLabs |
| 2 | Fish Audio Provides open-source studio-grade text-to-speech with instant voice cloning, but requires self-hosting or community web interfaces. | 8.56M | +1.6% | 43% direct | Freemium | vs Fish Audio |
| 3 | F5 TTS A lightweight open-source playground for expressive neural speech synthesis, though with fewer commercial production features. | 5.79K | -29.3% | 40% direct | Free | vs F5 TTS |
| 4 | Speechify Focuses heavily on reading digital documents aloud and assistive listening, rather than raw speech generation testing. | 5.46M | +0.5% | 52% direct | Freemium | vs Speechify |
| 5 | TTSMaker A straightforward free online text-to-speech converter, but offers less granular voice style and parameter tweaking. | 1.16M | +6.8% | 44% direct | Freemium | vs TTSMaker |
| 6 | ttsMP3.com Converts pasted text into downloadable MP3s quickly, though lacking advanced AI voice design and emotion controls. | 378.88K | +8.1% | 44% direct | Freemium | vs ttsMP3.com |
Offers vastly superior voice cloning and emotional range, but lacks the specific OpenAI voice preview playground layout.
Offers vastly superior voice cloning and emotional range, but lacks the specific OpenAI voice preview playground layout.
Free / Open-sourceProvides open-source studio-grade text-to-speech with instant voice cloning, but requires self-hosting or community web interfaces.
Free / Open-sourceProvides open-source studio-grade text-to-speech with instant voice cloning, but requires self-hosting or community web interfaces.
Free / Open-sourceA lightweight open-source playground for expressive neural speech synthesis, though with fewer commercial production features.
Free / Open-sourceA lightweight open-source playground for expressive neural speech synthesis, though with fewer commercial production features.
Focuses heavily on reading digital documents aloud and assistive listening, rather than raw speech generation testing.
Focuses heavily on reading digital documents aloud and assistive listening, rather than raw speech generation testing.
A straightforward free online text-to-speech converter, but offers less granular voice style and parameter tweaking.
A straightforward free online text-to-speech converter, but offers less granular voice style and parameter tweaking.
Converts pasted text into downloadable MP3s quickly, though lacking advanced AI voice design and emotion controls.
Converts pasted text into downloadable MP3s quickly, though lacking advanced AI voice design and emotion controls.
Includes robust voice cloning and podcast hosting tools, but is less focused on simple interactive voice testing.
Includes robust voice cloning and podcast hosting tools, but is less focused on simple interactive voice testing.
Free / Open-sourceFeatures open-weights conversational voice generation with expressive English output, but has a smaller overall voice selection.
Free / Open-sourceFeatures open-weights conversational voice generation with expressive English output, but has a smaller overall voice selection.
AI text to speech with 5,000+ realistic voices in 150 languages
AI text to speech with 5,000+ realistic voices in 150 languages
Natural AI text to speech with 910+ voices on web, iOS and Android
Natural AI text to speech with 910+ voices on web, iOS and Android
Free AI text to speech with 200+ voices in 70+ languages
Free AI text to speech with 200+ voices in 70+ languages
SpecialistVietnamese AI text-to-speech, voice cloning, and dubbing for creators
SpecialistVietnamese AI text-to-speech, voice cloning, and dubbing for creators
