Three new models landed in Notion:
☀️ GPT-5.6 Sol — for days-long tasks and self-improving agents
🌍 GPT-5.6 Terra — GPT-5.5 workloads at ~half the cost
🌙 GPT-5.6 Luna — speed for the small stuff (available for Custom Agents)
Notion announced three GPT-5.6 models on 2026-07-09
Brief
Notion rolled out three GPT-5.6 variants on 2026-07-09: Sol for extended, multi-day workflows and self-improving agents; Terra offering the performance of GPT-5.5 at roughly 50% lower cost; and Luna optimized for fast, lightweight tasks, available specifically for Custom Agents.
Why it matters
Notion announced three GPT-5.6 models on 2026-07-09: GPT-5.6 Sol, Terra, and Luna (posted by @NotionHQ).
Key details
- GPT-5.6 Sol targets days-long tasks and self-improving agents; GPT-5.6 Terra matches GPT-5.5 workloads at about half the cost; GPT-5.6 Luna prioritizes speed for small tasks and is available for Custom Agents.