AI · alternatives · 2026
24 alternatives to Grok Voice Agent API
Bringing the power of Grok Voice to all developers
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier.
- 1
Our most capable voice agent is now available via API
Apr 2026 · x.ai · its alternatives →
- 2
- 3
Grok 3 API▲191Real-time multi-agent AI that debates itself to find truth.
2025 · docs.x.ai · its alternatives →
- 4
Conversational AI for understanding the universe
2023 · x.ai · its alternatives →
- 5
The open-source framework for real-time AI voice
2025 · videosdk.live · its alternatives →
- 6
Voice Agent API▲118One API to build production-ready voice agents
Apr 2026 · assemblyai.com · its alternatives →
- 7
Grok 4.2▲274Hi HN, I’ve been tracking the recent surge in Grok’s AI capabilities. According to the latest search data, "Grok Imagine 1.0" is seeing breakout growth, but there is a massive (+180%) spike in developer interest for the API side, specifically for video. I built grokimagine2.net to serve as a hub for what’s coming next in the Grok ecosystem. It focuses on the transition from image generation to high-fidelity video (which is currently the #1 trending topic in the niche). I'd love to get your thoughts on: The feasibility of Grok’s video model compared to Sora 2 or LTX. What you’d like to see in…
Feb 2026 · grok.com · its alternatives →
- 8
- 9
- 10
Grok's Text to Speech API is now available.
Mar 2026 · x.ai · its alternatives →
- 11
- 12
Bring the power of Grok into your terminal
2025 · github.com · its alternatives →
- 13
2024 best model from xAI, now open source.
2025 · huggingface.co · its alternatives →
- 14
Super Grok▲142Voice, custom prompts, languages and more
2025 · chromewebstore.google.com · its alternatives →
- 15
Tighter instruction adherence in speech agents
Feb 2026 · developers.openai.com · its alternatives →
- 16
Retell AI▲300API that helps developers build human-like voice agents
2024 · retellai.com · its alternatives →
- 17
Build conversation actions for Google Home and more
2016 · its alternatives →
- 18
- 19
- 20
Voice agents powered by Simba 3.2 the world's #1 voice model
Jul 2026 · speechify.ai · its alternatives →
- 21
OpenBotfree▲362Grok Bot alternative: free, local, open-source, multiplayer
22d ago · openbot.run · its alternatives →
- 22
Voicebun▲189Hey HN, I built Voicebun as a pet project because I was frustrated with how locked-down and rigid voice agents still are—many tools are either closed platforms, lack deep customization, or charge a lot just to test ideas. I wanted a way to quickly spin up AI voice agents that I could fully control—from the voice itself to the logic behind every word. Voicebun is an open-source voice agent builder. You can: - Clone voices and generate audio using your own scripts and prompts - Dynamically change prompts based on user input - Add custom logic through functions and webhooks (e.g. hit an API,…
2025 · voicebun.com · its alternatives →
- 23
- 24
Daily Bots▲223Build voice-to-voice AI agents with any LLM with Open Source
2024 · daily.co · its alternatives →
Also compare
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →