Compare AI tools

	Cartesia S	Hume AI A	Claude Code S	Fathom S
Tagline	Ultra-low-latency voice. Built for realtime agents.	Voice AI that reads + expresses emotion.	Anthropic's CLI agent. Opus-powered, operates on your repo directly.	Meeting notes, free forever for individuals.
Category	Voice	Voice	Coding	Meetings
Pricing	Free tier + usage-based API	Free tier + pay-as-you-go	Part of Claude Pro/Max/Team plans	Free for individuals + $15-$29/user/mo teams
Best for	Developers building voice agents, phone bots, interactive apps.	Therapy apps, customer service, any voice agent where emotion matters.	Developers who want an agent, not autocomplete. Large refactors, tests, docs.	Solo operators, freelancers, small teams on a budget.
Strengths	< 90ms latency — the fastest in the market Sonic model sounds natural Developer-friendly API	Detects + mirrors emotional tone EVI (Empathic Voice Interface) feels different Expressive voice output	Runs locally, edits your actual files Strong on large codebases with 1M context Great at multi-step tasks	Unlimited free tier for solo use Strong summaries + action items Works in Zoom, Meet, Teams
Weaknesses	Fewer voices than ElevenLabs Less consumer-facing brand	Niche use case Pricing ramps fast	Terminal-based — learning curve Can't be used without Claude subscription	Bot-joining model Team features gated
Kai's verdict	S-tier for realtime. If latency matters more than voice catalog, start here.	A-tier in its niche. The only one that actually gets emotion right.	S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.	S-tier for solo + free. The best free option, hands down.
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