Compare AI tools

	GitHub Copilot B	Symphony A	Hume AI A	Ollama S
Tagline	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	OpenAI's open-source daemon that turns your Linear board into an always-on coding agent factory — tickets go in, pull requests come out.	Voice AI that reads + expresses emotion.	Run LLMs locally. One-line install, GUI optional.
Category	Coding	Agents	Voice	Dev Platform
Pricing	Free (limited) + $10/mo Pro + $19/mo Business	Free (open-source)	Free tier + pay-as-you-go	Free + open source
Best for	Teams with GitHub already. Devs who don't want to change IDEs.	Engineering teams already using Linear + OpenAI Codex who want to stop babysitting agent sessions and instead let the issue tracker drive autonomous coding at scale.	Therapy apps, customer service, any voice agent where emotion matters.	Devs wanting offline/local LLMs for privacy or experimentation.
Strengths	Great enterprise story Works in your existing IDE Chat + autocomplete	Fully autonomous ticket-to-PR pipeline: every open Linear issue gets its own isolated Codex agent without manual supervision Fault-tolerant Elixir/OTP architecture automatically restarts crashed agents and manages hundreds of concurrent runs WORKFLOW.md keeps all orchestration policy version-controlled inside the repo, so agent behavior is reproducible and reviewable like code Proven internal results: OpenAI reported a 500% increase in landed PRs on some teams within three weeks Open spec encourages community re-implementations in any language, not just Elixir	Detects + mirrors emotional tone EVI (Empathic Voice Interface) feels different Expressive voice output	Run Llama, Mistral, Qwen, etc. on your laptop Simple CLI + API Hardware-aware (picks the right quant)
Weaknesses	Less agentic than Cursor/Claude Code Model quality varies	Currently only supports Linear as an issue tracker — GitHub Issues and Jira integrations are not yet official Only OpenAI Codex is officially supported as the agent runtime; other model integrations are community-contributed and incomplete Self-hosted, Elixir-dependent engineering preview with no built-in sandboxing — not suitable for untrusted or production environments out of the box	Niche use case Pricing ramps fast	Needs beefy laptop for larger models Speed way behind cloud APIs
Kai's verdict	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.	Symphony is the most architecturally serious 'issue tracker as control plane' approach yet — 15K GitHub stars in weeks confirms the idea resonates — but it's still a rough, self-hosted engineering preview that demands Elixir chops and a Linear-only workflow. (Verdict pending Phi's full review.)	A-tier in its niche. The only one that actually gets emotion right.	S-tier for local inference. If you care about privacy or want to tinker, install this today.
Link	Open →	Open →	Open →	Open →