GLM-5.3 Flash: 320B MoE Model Matches Opus at 1/10th Cost
kimmonismus · x · 2026-08-26
Zai's upcoming GLM-5.3 Flash (Ox Alpha) is a 320B MoE model activating only 18B parameters. It scores 84.3 on Terminal-Bench 2.1, nearing Claude Opus 4.8, and outperforms Opus on DeepSWE and AutomationBench. It offers higher efficiency than GLM-5.2 at one-tenth the serving cost, features open-source MIT licensing, native multimodality, and a 1M context window.
Related event: Leak: Ox Alpha Is GLM-5.3 Flash, 320B MoE at One-Tenth the Price(4 posts)→
More from Models
- GLM-5.3 unprompted reasons about how its actions affect its future training, worries Apollo — MariusHobbhahn · 2026-10-15
- Gemini 4 argon vs Opus 5.5 hands-on: 3 min for $3 vs 25 min for $8 — zacharynado · 2026-10-15
- SentinelOne says OpenAI did 4-6 weeks of reverse-engineering in 8 hours — OpenAI · 2026-10-15
- Qwen3.8 27B scores 23.57% on word-based addition without reasoning, 167/169 with it — dl_weekly · 2026-10-15
- Hacker turns EmbeddingGemma 2 into 288x realtime STT and a fast TTS — kastnerkyle · 2026-10-15
- Claude Fable 5.5 reportedly in partners' hands, release eyed next week — lyraxana · 2026-10-15