GLM 5.3, GPT 5.6 Luna, Claude Opus 5, Grok 4.6, DeepSeek V4, Kimi K3, and a cloud browser for agents - all FREE.
DuckDuckGo: GPT 5.6 Luna and older models, no signup: LM Arena: free side-by-side, Opus 5, GPT-5.6 Sol, Grok 4.6, Qwen 3.8 Max:
Claude Opus 5 built this school of manta rays in p5.js
It’s a single HTML file with no textures or premade models. All the geometry is recalculated from scratch every frame The wings are built along their own arc length, so they don’t stretch while flapping. A traveling wave
Claude fable 5.1 is here
Terminal-Bench 4.0: Fable 5.1 → 55.8% Opus 5 → 52.3% Fable 5 → 42.0% Cache reads: $1.00 → $0.25/MTok Anthropic says typical workloads cost ~25% less, and highly agentic ones up to ~45% less Agents just got a serious upgrade
A bug nobody could explain for five years
Claude fable 5.1 found it in one session Anthropic shipped Fable 5.1 and Mythos 5.1 today same model, different safeguards it leads on all 7 benchmarks tested - ahead of Fable 5, Opus 5, and GPT-5.6 Sol on every one:
You have reached the end of the archive
All of Claude Opus 5