# Revolut cuts AI coding costs 10x by self-hosting GLM-5.3 instead of Claude

Digest AI · Hardware & Compute · published 2026-11-03T12:07:00Z

Canonical: https://digestai.news/story/revolut-cuts-ai-coding-costs-10x-by-self-hosting-glm-5-3-instead-of-cl

## Summary

Revolut reduced its AI coding inference costs by about 90% in under a year by shifting from commercial services like Anthropic’s Claude Code to self-hosted models. The fintech now uses GLM-5.3, powered by 56 Nvidia B200 GPUs, after initially testing GLM-5.1 and earlier models like Gemini and Claude Code. Engineers’ monthly token spend dropped from thousands of dollars to pennies, freeing them to use AI for debugging and Jira tasks without budget constraints.

David Abitbol, Revolut’s ops and infrastructure lead, reported a 60% speedup in coding and a 70% reduction in lead time for its 2,000 engineers. Throughput of 200 tokens/second meets engineers’ needs, though after-hours users hit 800 tokens/second. GLM handles text-only tasks; vision queries still route to models like Gemini or GPT Luna.

## Key points

- Revolut slashed AI coding costs by ~90% in under a year by self-hosting GLM-5.3 instead of Claude Code
- Engineers’ coding time improved by 60% and lead time by 70% with cheaper, unlimited token access
- GLM-5.3 runs on 56 Nvidia B200 GPUs, optimized for 256K-token context and 200 tokens/sec throughput

## Why it matters

Self-hosting cheaper open models like GLM-5.3 could let other companies cut AI costs without vendor lock-in, though privacy risks remain for Chinese models.

## Sources

1. [British fintech Revolut slashes AI coding costs 10x by cutting out Claude and going self-hosted](https://theregister.com/ai-and-ml/2026/11/03/british-fintech-revolut-slashes-ai-coding-costs-10x-by-cutting-out-claude-and-going-self-hosted/5307345) (theregister.com, 2026-11-03)

## Cite

Digest AI, "Revolut cuts AI coding costs 10x by self-hosting GLM-5.3 instead of Claude", 3 November 2026, https://digestai.news/story/revolut-cuts-ai-coding-costs-10x-by-self-hosting-glm-5-3-instead-of-cl

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