Compare AI tools

	GitHub Copilot B	OpenAI Voice / Realtime S	OpenRouter S	Replicate S
Tagline	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	ChatGPT's voice + the Realtime API for developers.	One API, every model. Pay-as-you-go, no subscriptions.	Run any open-source AI model with an API call.
Category	Coding	Voice	Dev Platform	Dev Platform
Pricing	Free (limited) + $10/mo Pro + $19/mo Business	Voice included with ChatGPT Plus; Realtime API by usage	Pay per token — model-dependent	Pay per second of compute
Best for	Teams with GitHub already. Devs who don't want to change IDEs.	Voice chat users, developers building voice agents on OpenAI.	Developers experimenting across models. Apps that want fallback logic.	Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths	Great enterprise story Works in your existing IDE Chat + autocomplete	Advanced Voice Mode feels genuinely conversational Realtime API enables true two-way voice apps Built into ChatGPT	300+ models from one endpoint Automatic fallbacks between providers No subscription — just pay what you use	Tens of thousands of models (image, video, audio, LLMs) One-line API for any model Cog framework for custom model deploy
Weaknesses	Less agentic than Cursor/Claude Code Model quality varies	Pricey for production apps Less voice variety than ElevenLabs Platform lock-in	Slight markup over direct API Some provider features not exposed	Cold starts on less-popular models Pricing gets real at scale
Kai's verdict	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.	S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.	S-tier for model-shopping. I use this for every prototype before committing.	S-tier for open-source model APIs. The default in this space.
Link	Open →	Open →	Open →	Open →