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AI Coding Agents

404 summarised stories about AI Coding Agents, each linking back to the original source. Browse all topics →

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Saturday, 5 September 2026

Claude Mythos 5.1 and Fable 5.1: Capabilities

Zvi (Don't Worry About the Vase) 1 month ago 24 ● 5 sources

Claude Fable 5.1 was released alongside discussion of its relative capabilities versus other leading models like GPT-6 Astra. Cache reads on Fable 5.1 are priced at $0.25 per million tokens, down from $1. As a result, users get lower per-token costs, fewer safeguard interventions, optional zero data retention for eligible customers, and improved performance across multiple coding and agentic benchmarks.

GitHub Introduces Project HydraFusion: Runtime Multi-Model Orchestration That Builds a Workflow Per Coding Task in Copilot CLI

MarkTechPost 1 month ago 49

GitHub released Project HydraFusion, a research-preview system in Copilot CLI that selects an execution workflow per coding request instead of using a single model. It reported on TerminalBench an estimated cost of 67% lower with verified task quality up 4.9 points versus Claude Opus 5. As a result, tasks may be solved in a single call, or drafted then critiqued/escalated via quality-gate checks, with billing based on the tokens consumed by the workflow’s underlying models.

Using Blender with coding agents on macOS

Simon Willison’s Weblog 1 month ago 20

A writer used Blender on macOS through ChatGPT Codex to control Blender renders with prompts. They described running the prompt using the macOS app path /Applications/Blender and iterating with two follow-up prompts. As a result, they generated a new image using Blender’s Python API after adding a background and increasing the scene’s flair.

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