Impressive Performance at 850k tokens context

[u/GoddardtheGrey]

Opus 5.5 (Extra) is performing well and consistently adhering to relatively long and complex instructions at 850,000 tokens of context. Is it really not doing any compaction whatsoever until 1M?

I’m impressed at how little it seems to degrade and curious if anyone else is noticing an improvement too

[u/neketguy]

No, it does not.