The AI Model Frontier

Understand Claude and every major AI model, daily

Curated news, benchmarks, and hands-on guides for Claude, GPT, Gemini and more - keep up with the AI model frontier in one place.

Browse latest articles Call models via onehop →

Anthropic launch artwork for Claude Sonnet 5 showing flowers and leaves forming the number 5

News

Claude Sonnet 5 Is Official: API ID, Pricing, Context Window, and What to Test First

Anthropic has officially released Claude Sonnet 5. Here is what changed for developers: claude-sonnet-5, intro pricing, 1M context, agents, coding, and migration checks.

June 30, 2026 · 12 min read

News Benchmarks Guides Analysis Comparisons Ecosystem

Latest articles

View all →

Claude Code loop engineering control system illustration

EcosystemJune 20, 2026 · 8 min read

Claude Code Loop Engineering: How to Build an Agent That Actually Finishes

A practical breakdown of Claude Code loop engineering: goals, hooks, subagents, context, verification, and the limits of autonomous coding agents.

Cream-background editorial cover showing a developer terminal connected by terracotta lines to three labeled concept nod

GuidesJune 17, 2026 · 24 min read

Use Groq GPT-OSS 120B with the OpenAI SDK: Base URL, Pricing, and Caching

Swap one OpenAI SDK base URL to run GPT-OSS 120B on Groq, estimate cached token costs, and avoid tool billing surprises.

Cream-background editorial illustration of three abstract coding model cards racing across a polyglot test grid, with te

BenchmarksJune 17, 2026 · 20 min read

GPT-5 vs Gemini 2.5 Pro vs Claude Opus 4 on Aider Polyglot Coding

A data-first comparison of GPT-5, Gemini 2.5 Pro, and Claude Opus 4 on Aider Polyglot coding.

Cream-background editorial cover showing three abstract terminal windows as stacked charcoal cards, each connected to a

BenchmarksJune 16, 2026 · 21 min read

Gemini 3.1 Pro vs GPT-5.2 vs Claude Opus 4.6 on Terminal-Bench 2.0

Gemini 3.1 Pro leads the shared Terminal-Bench 2.0 harness, but harness choice changes the CLI coding story.

Cream-background editorial cover showing a developer terminal window connected by terracotta lines to a Grok model card

NewsJune 16, 2026 · 20 min read

Using Grok Build in Warp with a SuperGrok or X Premium Subscription

xAI now lets Warp users connect Grok or X Premium and run grok-build-0.1 inside terminal agent workflows.

A cream-background editorial illustration of a developer workspace inside a transparent sandbox cube, with file trees, t

EcosystemJune 16, 2026 · 25 min read

OpenAI Agents SDK Native Sandbox and Manifest Guide

How OpenAI’s Agents SDK sandbox and Manifest let developers build safer file-working agents without custom orchestration.

A warm editorial cover showing a developer workflow split into two clean paths: “Claude Fable 5” primary lane and “Opus

NewsJune 15, 2026 · 23 min read

Claude Fable 5 API Safeguards: How Opus 4.8 Fallback Changes Developer Workflows

Fable 5’s Opus 4.8 fallback changes API testing, billing, caching, and reliability assumptions for developer teams.

A cream-background editorial illustration of two terminal windows side by side: the left labeled visually by fading comm

EcosystemJune 15, 2026 · 24 min read

Google Antigravity CLI vs Gemini CLI: What Developers Need to Migrate Before June 18, 2026

Gemini CLI consumer access ends June 18, 2026. Here’s what changes, who is affected, and how to migrate terminal workflows.