Blog

On Cursor's own benchmark, Opus 5.5 beats every Grok 4.7 setting for less, and Composer 2.5 is the cheap editor. Prices, plan burn and the break-even.

• cursor
• model-routing
• benchmarks
• ai-coding-tools

Commit on green, keep every caller with its change, and stack small pull requests. The diff-size numbers behind it, and the hooks that enforce it.

• coding-agents
• claude-code
• code-review
• workflows

Memory is what an agent noted and a plugin replays. Documentation is what you wrote, reviewed and committed. How each loads, and what to write down.

• context-engineering
• agents-md
• claude-code
• coding-agents

ds4 runs big MoE models on 96 GB Macs, Magnitude tunes kernels to your device, Strata puts one model on a gaming PC. Every speed claim is self-reported.

• local-ai
• open-source
• benchmarks
• coding-agents

fast-jev-compaction prunes in a second, not 30. At its default threshold it keeps almost no tool results, and a scorer that always says no cuts as much.

• compaction
• context-engineering
• jev
• claude-code

The agent writes the film as code, headless Chromium captures each frame, FFmpeg encodes. LaunchVideo spends 100k tokens a film; a 14-agent reel cost $30.46.

• coding-agents
• claude-code
• video
• ffmpeg

A durable harness commits every step of an agent run to storage, so a crash resumes mid-turn. What Pi Durable shipped on 1 October, and what is only claimed.

• harnesses
• coding-agents
• ai-agents
• durable-execution

GitHub was the most added tool on Stackness in September 2026. Supabase and Cloudflare went from no profiles to 6 and 5. The table and an npm check.

• monthly-roundup
• trends
• ai-coding-tools

Sonnet 5.5 costs half of Opus 5.5 per token, but cache reads cost $0.20 on both. Which model plans, which one edits, and what one metered run saves.

• claude-code
• coding-agents
• model-routing
• benchmarks

A frozen eval panel is the only rerunnable way to tell whether a hosted model got worse. What livenerf measures on Opus 5.5, and how to size your own.

• benchmarks
• evals
• claude-code
• coding-agents

You can get Jev-style typed decisions from an ordinary LLM by forcing one output token and reading its logprobs. Where that matches Jev, and where it loses.

• system-one-models
• jev
• calibration
• logprobs

An ADE is an app built around tasks that coding agents run, not files you edit. What JetBrains Air shipped, and whether an ADE replaces your IDE.

• coding-agents
• harnesses
• ai-coding-tools
• ides

Facts every session needs go in AGENTS.md, procedures go in skills, and rules that must hold go in hooks. How to share one handbook across six agents.

• agents-md
• claude-code
• context-engineering
• agent-skills

Opus 5.5 sends its between-tool notes as empty thinking blocks and ends some turns early. What breaks in an agent harness, and the documented fixes.

• claude-code
• coding-agents
• harnesses
• prompt-engineering

To run a System One model locally, pick a runtime too: Ollaya serves ten open model families, laya-mlx runs Laya on Apple silicon, and llama.cpp needs a shim.

• system-one-models
• jev
• local-ai
• benchmarks

Model routing for coding agents in September 2026: a frontier model plans, a cheap one executes. The plan and price numbers developers measured.

• coding-agents
• ai-coding-tools
• model-routing
• claude-code

A Claude Code mod is a plugin whose TypeScript hooks module runs inside Claude Code. What shipped in 2.1.277, what is only announced, and when to use one.

• claude-code
• coding-agents
• harnesses
• plugins

JevBench scores System One models on accuracy, calibration, speed and cost, and puts Jev first at 63.3. Why calibration still needs your own data.

• system-one-models
• jev
• benchmarks
• calibration

Since 2.1.277, Claude Code reads AGENTS.md only when no CLAUDE.md or CLAUDE.local.md is on the path. Before 2.1.281, telemetry off skipped it silently.

• claude-code
• agents-md
• coding-agents
• context-engineering

A harness is everything in a coding agent except the model. On strong models, two September 2026 studies found it moves the bill more than the pass rate.

• coding-agents
• harnesses
• claude-code
• context-engineering