The provider is a massive issue. People moving off Claude tend to assume this is solved.

Claude's uptime is terrible. The uptime of most other providers is even worse...and you get all the quantization, don't know what model you are actually getting, etc.

Kimi 2.5 was like using Sonnet 4 on a flaky ADSL line. I haven't tried K2.6 yet, but the physical unreliability of the connection was too off-putting.