AI · AI today, November 5, 2026
Business
Revolut cuts its AI coding spend 90% with open models on its own servers
· Aster editorial team
AI-generated imageThe British digital bank swapped commercial services for open-weight models (GLM, from Chinese company Z.ai) running on its own hardware, and says its AI coding spend fell about 90% in under a year. Around 2,000 engineers use the tools; for image tasks it still turns to commercial models.
Why it matters
It shows open models now hold up in real work, and that for a large company, keeping AI in-house can be cheaper and keep its data under its control.
For the technical crowd
GLM-5.3 runs on 56 Nvidia B200 GPUs; the gains came mainly from NVFP4 quantization, disaggregated prefill and decode, and context tuning. The quoted cost for GLM-5.1 was $0.30 per million tokens.
· Source: The Register
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