Welcome back to Agentic Coding Weekly. Here are the updates on agentic coding tools, models, and workflows for the week of Jun 7-13, 2026.
Executive Summary:
Anthropic released Claude Fable 5 and Mythos 5. Scored 80.3% on SWE-bench Pro and 88.0% on Terminal-Bench 2.1.
Access did not last long. On June 12, Anthropic pulled access after a US government request to suspend access for foreign nationals.
Moonshot AI released a coding model, Kimi K2.7 Code. Did not publish agentic coding benchmark numbers.
Zai released GLM 5.2 on its coding plan. Weights coming in a week. No benchmarks yet.
Xiaomi launched MiMo V2.5 Pro UltraSpeed and released MiMo Code, a fork of OpenCode.
Worth reading: a short post on how to show consideration for teammates while sending AI generated content, a career reflection from a senior engineer, and an HN thread on personal tools built with AI.
Meanwhile, a giant star may have destroyed itself in one of the universe's rarest explosions. No, I'm not talking about Fable 5.
1. Tooling and Model Updates
Claude Fable 5 and Mythos 5
Anthropic finally released Mythos class model publicly last week on June 9th. Mythos 5 is same model as Fable 5 but with less safeguards and only available to select customers.