Compare AI tools

	GitHub Copilot B	Windsurf A	OpenAI Voice / Realtime S	Hume AI A
Tagline	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	Codeium's agentic IDE. Cascade agent + strong free tier.	ChatGPT's voice + the Realtime API for developers.	Voice AI that reads + expresses emotion.
Category	coding	coding	voice	voice
Pricing	Free (limited) + $10/mo Pro + $19/mo Business	Free + $15/mo Pro	Voice included with ChatGPT Plus; Realtime API by usage	Free tier + pay-as-you-go
Best for	Teams with GitHub already. Devs who don't want to change IDEs.	Developers who want Cursor-like power for less money.	Voice chat users, developers building voice agents on OpenAI.	Therapy apps, customer service, any voice agent where emotion matters.
Strengths	Great enterprise story Works in your existing IDE Chat + autocomplete	Cheaper than Cursor Cascade agent for multi-file tasks Solid free tier	Advanced Voice Mode feels genuinely conversational Realtime API enables true two-way voice apps Built into ChatGPT	Detects + mirrors emotional tone EVI (Empathic Voice Interface) feels different Expressive voice output
Weaknesses	Less agentic than Cursor/Claude Code Model quality varies	Smaller community Model selection more limited	Pricey for production apps Less voice variety than ElevenLabs Platform lock-in	Niche use case Pricing ramps fast
Kai's verdict	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.	A-tier. Close second to Cursor. If $5/mo matters, start here.	S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.	A-tier in its niche. The only one that actually gets emotion right.
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