Umans GLM 5.2 NVFP4 Playground Retired
playground experiment; the test window ran Jun 29 to Jul 2, 2026
189.5tok/s
throughput · p50 · whole period
1.57s
TTFT · p50 · whole period
100.00%
uptime · whole period
Experimental NVFP4-quantized build of GLM 5.2 - offered for testing only. The published NVFP4 results look very flattering, but we're skeptical of its real quality and performance: this checkpoint was NOT QAT post-trained for NVFP4 (the QAT-on-NVFP4 models are where we've seen the best quality), so treat the benchmarks with caution. Play with it, push it, and see how far it gets you - for production work we recommend the fp8 `umans-glm-5.2`. It runs on a single low-capacity GPU with no fallback, so expect it to go down under load: crash it, let it restart, and play again.
Trends
Speed over its final 90 days
peak 220.6 tok/s · Jun 30final 178.7 tok/s
Jun 27, 2026retired Jul 2, 2026Jul 4, 2026
best 1.27s · Jun 28final 1.44s
Jun 27, 2026retired Jul 2, 2026Jul 4, 2026
Changelog
Events for Umans GLM 5.2 NVFP4
Jul 22026
Playground closed: Umans GLM 5.2 NVFP4 Testing
The short NVFP4 test window ended after four days. Thanks to everyone who pushed it and shared findings.
Jun 292026
Playground opened: Umans GLM 5.2 NVFP4 Testing
umans-glm-5.2-nvfp4 entered the playground for a short, low-capacity test window. Experimental and temporary; not for production.