gpt-realtime-1.5 by OpenAI vs Voiceflow: Which Should You Choose in 2026?
Choosing between gpt-realtime-1.5 by OpenAI and Voiceflow comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
By Toolradar Team · Last updated February 28, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
gpt-realtime-1.5 by OpenAI
Enable low-latency, multimodal AI interactions for voice agents and real-time audio transcription.
Best for you if:
- • You need transcription features specifically
- • Enables low-latency speech-to-speech and multimodal AI interactions.
- • Supports building voice agents in browsers, server-side, and VoIP telephony.
Voiceflow
No-code platform for building AI chat and voice agents
Best for you if:
- • You want the higher-rated option (7.8/10 vs 0.0/10)
- • You want to try before committing
- • You need ai agents features specifically
- • No-code visual agent builder
- • Chat and voice support
| At a Glance |  gpt-realtime-1.5 by OpenAI |  Voiceflow |
|---|---|---|
Price | Paid | Free + Paid |
Best For | Transcription | AI Agents |
Rating | —/100 | 78/100 |
| Feature | gpt-realtime-1.5 by OpenAI | Voiceflow |
|---|---|---|
| Pricing Model | Paid | Freemium |
| Editorial Score | — | 78 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 147 | 0 |
| Categories | TranscriptionAI Voice | AI AgentsWorkflow Automation |
How gpt-realtime-1.5 by OpenAI and Voiceflow Compare
gpt-realtime-1.5 by OpenAI
Enable low-latency, multimodal AI interactions for voice agents and real-time audio transcription.
Paid
Voiceflow
No-code platform for building AI chat and voice agents
Free tier available · 78/100 score
gpt-realtime-1.5 by OpenAI is a transcription tool. Voiceflow is in ai agents.
Who Should Use What?
On a budget?
Voiceflow has a free tier. gpt-realtime-1.5 by OpenAI is paid only.
Go with: Voiceflow
Want the highest-rated option?
Voiceflow scores 78/100. gpt-realtime-1.5 by OpenAI is unrated.
Go with: Voiceflow
Value user reviews?
Neither has user reviews yet.
Go with: Voiceflow
3 Questions to Help You Decide
What's your budget?
gpt-realtime-1.5 by OpenAI is paid. Voiceflow is freemium. Voiceflow lets you start free.
What's your use case?
gpt-realtime-1.5 by OpenAI is a transcription tool. Voiceflow is in ai agents. Pick the category that matches your needs.
How important are ratings?
Not all tools have been rated yet.
Key Takeaways
Voiceflow
- Higher score: 78/100 vs unrated
- Free tier available
- Our pick for this comparison
gpt-realtime-1.5 by OpenAI
- More community upvotes (147)
- Better fit for transcription
The Bottom Line
Voiceflow (78/100) is our pick.
Frequently Asked Questions
Is gpt-realtime-1.5 by OpenAI or Voiceflow better?
Voiceflow scores 78/100 in our evaluation. gpt-realtime-1.5 by OpenAI is paid and Voiceflow is freemium.
What are gpt-realtime-1.5 by OpenAI and Voiceflow used for?
gpt-realtime-1.5 by OpenAI: Enable low-latency, multimodal AI interactions for voice agents and real-time audio transcription.. Voiceflow: No-code platform for building AI chat and voice agents.
What does gpt-realtime-1.5 by OpenAI cost vs Voiceflow?
gpt-realtime-1.5 by OpenAI is a paid tool. Voiceflow is freemium (free tier + paid plans). Visit their websites for detailed pricing.