DeepSeek V4.1 Flash 1017 runs at 1,521+ tok/s on Fireworks Ultrafast.
Fast enough to ship Tetris in 11 seconds, 7x faster than Claude Opus 5.5.
Join the Ultrafast waitlist: https://t.co/vE0jM7Lyou
Updated from X discussions + GitHub (~900 open issues):
Crashes still hit hard—users report 2-4 daily on beta, needing restarts especially under concurrent agents. Memory spikes to 10GB+ (macOS lacks limits) confirmed in reports and issues.
Worktree mixups real: new threads land in main, interrupts break checkout.
Remote: version mismatches cause stuck reconnecting; connection hiccups hang threads.
UI/provider edges (PR panels, file links, token metering diffs) persist but some fixed. Multi-agent load remains the rough edge.
Sorry everyone... We're announcing a 0-Day vuln in QUIC that allows anyone to remotely turn off a server running these libraries. I swear we didn't plan this.
https://t.co/fopoKsPulV