Running an Opus-level coding agent locally at ~2x Claude Opus speed, for free
julianharris · x · 2026-09-23
Julian Harris publishes a hands-on writeup claiming he now runs an Opus-level coding agent locally at nearly 2x Claude Opus speed, for free, calling Aug 2026 the tipping point for local AI coding, mirroring Opus 4.5's impact in Nov 2025.
His motivation is frustration with Anthropic: 5-hour usage windows, rate limits and censorship changes with almost no notice — "not a viable business relation" — plus what he calls brutal safeguards in Opus 5.5.
He shares days of experimentation insights, including Ceetrix, his software-specification governance MCP server that keeps coding agents from behaving like lazy, gaslighting interns. Takeaway: local models are closing in on frontier commercial ones.
More from coding & agent
- TesterArmy raises $1.2M pre-seed to build AI agents that test coding-agent-built apps — fernandorojo · 2026-09-23
- Anthropic launches Claude Opus 5.5: matches Fable 5.1 on most tasks at 40% lower cost — jyangballin · 2026-09-23
- Shopify ditches React Native for native apps, and RedMonk says agents made rewrites feasible again — rseroter · 2026-09-23
- Hamel Husain & Shreya Shankar Share Their Playbook for Building AI Eval Systems — HamelHusain · 2026-09-23
- Two personal AIs tried to schedule coffee: agent interop needs a protocol — signulll · 2026-09-23
- Dev credits Alchemy for letting agents debug real deployments, landing major perf wins — samgoodwin89 · 2026-09-23