topic
Agentic Coding
9 posts tagged Agentic Coding.
Claude Opus 5.5: Cheaper Agentic Coding Model and What It Means for Builders
Anthropic's Opus 5.5, the first model in the Claude 5.5 family, costs less to run than Opus 5 and is aimed at agentic coding. For anyone running LLM-in-the-loop systems, the pricing and safety claims both need a closer look.
- claude
- anthropic
- agentic-coding
- llm-pricing
- ai-safety
What a Cartoon Pelican Reveals About Picking Your Next Coding Model
Simon Willison's long-running 'pelican riding a bicycle' SVG test just compared GPT-6 Astra against three GPT-5.6 siblings — and the reasoning-level breakdown says more about model economics than the drawings do.
- ai-models
- llm-benchmarks
- vibecoding
- agentic-coding
- gpt-6
Claude Fable 5.1: Cheaper Agent Runs, a Real Science-Benchmark Jump
Anthropic's new model more than doubles its predecessor on a fresh scientific-reasoning benchmark and cuts cache-read pricing 75% — the second number matters more for anyone running long agentic coding sessions.
- claude-fable-5-1
- anthropic
- agentic-coding
- vibecoding
- llm-benchmarks
Claude Code Makes Auto Mode the Default — What Builders Need to Know
Starting August 14, Anthropic flips Claude Code's permission default from prompt-every-step to a classifier-gated auto mode for Pro, Max, and Team users — betting that confirmation fatigue, not agent capability, is the real safety gap.
- vibecoding
- claude-code
- ai-agents
- agentic-coding
- dev-tooling
One Prompt, Two Agents: Codex's Sub-Agents Out-Build Claude at Vibecoding
Simon Willison gave the same four-year-old game prompt to Claude Fable 5 and to Codex Desktop running GPT-5.6 Sol Ultra. The sub-agent-heavy Sol Ultra run shipped the more complete game — and published its exact cost.
- vibecoding
- agentic-coding
- codex
- claude-code
- ai-dev-tools
Datasette Apps 0.2a0: An AI Agent That QA-Tests Its Own UI, Invisibly
Simon Willison's latest Datasette Apps release gives its AI agent two new tools to build, list, and — critically — silently test the apps it writes, closing a loop most agentic coding tools still leave open.
- vibecoding
- ai-agents
- datasette
- dev-tooling
- agentic-coding
Claude Opus 5: Anthropic Halves the Cost of Frontier Coding Intelligence
Anthropic's new flagship prices near-Fable-5 capability at Opus 4.8 rates, tops agentic-coding benchmarks, and narrows (without closing) a key AI-security gap.
- claude-opus-5
- anthropic
- vibecoding
- agentic-coding
- ai-security
GPT-5.6's Three Tiers Show Why 'Best Agent' Isn't 'Best Coder'
OpenAI's Luna/Terra/Sol lineup undercuts Claude on price and wins a flagship agent benchmark — but loses badly on raw coding tasks, which is the number builders should actually be watching.
- gpt-5.6
- openai
- agentic-coding
- vibecoding
- llm-pricing
Claude Fable 5 Is Back: Inside Anthropic's 18-Day Export-Control Standoff
A jailbreak demo built around reading a codebase and patching its flaws triggered a US export-control order that pulled Fable 5 and Mythos 5 offline for 18 days — here's what happened and what it means for teams building on frontier models.
- anthropic
- claude
- ai-policy
- export-controls
- agentic-coding