Per provider the defaults:
- Gemini — Flash for speed
- Groq — Llama 3.3 70B
- Cerebras — Llama 3.3 70B
- Cloudflare Workers AI — Llama 3.3 70B (FP8)
- GitHub Models — GPT-4o mini
- OpenRouter — GPT-OSS 120B (free tier)
All 70B models deliver comparable quality for social media content; differences are mainly in speed and availability.