Cerebras is good on paper but all I can reasonably access is "GPT OSS 120b, Qwen 3.8 27B" which aren't very good for my use.

Openrouter on nitro gets me there. Although the TPS is 5X less still.

I have tried GPT OSS 120b on cerebras and it flies. But it's mostly wrong.

I was a subscriber of their now-unavailable coding plan. The 1000 TPS was very unique at the time, but nowadays their qwen 3.8 gets roflstomped by Mercury 3 at both cost and performance at similar TPS speed. There's not much reason to use them unless you're an enterprise with a custom deal.

GPT-5.6 Sol Ultrafast is running on Cerebras hardware.