explainx / blog
OpenRouter Fusion offers Fable-level intelligence at half the price. Still a strong alternative now that Fable 5 is live July 1 — for cost, multi-model panels, and no vendor lock-in.
Jun 15, 2026
OpenRouter Fusion shipped June 12. By June 14, the developer X feed was split: some called it a breakthrough compound model, others noted MoA has existed since 2024, a third group pointed out DRACO benchmarks cover zero coding tasks. Here's what the community debate actually surfaces about compound models, real costs, and where AI system design is heading.
Jun 30, 2026
Claude Sonnet 5 launched June 30, 2026. Default on Free and Pro. API: claude-sonnet-5. Intro pricing $2/MTok input, $10/MTok output through Aug 31.
Jul 27, 2026
Project Pilot asks whether frontier models can locate-and-follow with a cheap office drone. Fable 5 clears four of five Drone-Bench tasks; Reconstruct is the missing piece — and the governance warning.
