Compare AI tools

	Windsurf A	Claude Code S	Stable Audio A	Cartesia S
Tagline	Codeium's agentic IDE. Cascade agent + strong free tier.	Anthropic's CLI agent. Opus-powered, operates on your repo directly.	Stability AI's open audio model. Loops + SFX + background.	Ultra-low-latency voice. Built for realtime agents.
Category	coding	coding	audio	voice
Pricing	Free + $15/mo Pro	Part of Claude Pro/Max/Team plans	Free + $12/mo Pro + enterprise	Free tier + usage-based API
Best for	Developers who want Cursor-like power for less money.	Developers who want an agent, not autocomplete. Large refactors, tests, docs.	Game developers, podcasters needing SFX, video creators needing background music.	Developers building voice agents, phone bots, interactive apps.
Strengths	Cheaper than Cursor Cascade agent for multi-file tasks Solid free tier	Runs locally, edits your actual files Strong on large codebases with 1M context Great at multi-step tasks	Open-weight model available Great for loops + game audio + SFX Commercial-use clarity	< 90ms latency — the fastest in the market Sonic model sounds natural Developer-friendly API
Weaknesses	Smaller community Model selection more limited	Terminal-based — learning curve Can't be used without Claude subscription	Not for full songs with vocals Shorter generation limits	Fewer voices than ElevenLabs Less consumer-facing brand
Kai's verdict	A-tier. Close second to Cursor. If $5/mo matters, start here.	S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.	A-tier for its niche. Different use case than Suno — SFX and loops, not songs.	S-tier for realtime. If latency matters more than voice catalog, start here.
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