AI text generators
9 picks we've reviewed.
Claude Sonnet 5
Anthropic's Sonnet-tier model — 'the best combination of speed and intelligence.' Near-frontier on coding and agentic work at roughly a third of Opus's price, with a 1M-token context and adaptive thinking on by default.
Claude Mythos
Claude Mythos is Anthropic's cybersecurity-focused, Mythos-class model — built to autonomously find and fix software vulnerabilities. Its rollout is restricted; a safeguarded public sibling, Fable 5, carries Mythos-class capability to the broader public.
GPT-5.6
OpenAI's next flagship after GPT-5 — announced June 26, 2026 as a preview and generally available since July 9, 2026 in three tiers (Sol, Terra, Luna) with published per-token pricing.
Qwen-AgentWorld
Alibaba's Qwen team open-sources AgentWorld — a language world model that simulates seven agent environments (MCP, Search, Terminal, SWE, Web, OS, Android) and is trained to predict how each environment responds to an action. Released June 24, 2026 under Apache 2.0.
Sakana Fugu
Sakana AI's multi-agent orchestration system — Fugu routes complex tasks across a network of specialized agents, all through a single model API endpoint.
GLM-5.2
Zhipu's open-weight coding flagship: a 753B mixture-of-experts model with a 1M-token context and MIT weights, claiming to edge past GPT-5.5 on coding benchmarks.
VibeThinker-3B
A 3-billion-parameter open reasoning model that claims to match systems hundreds of times its size on math and code — and has the AI world arguing about whether the benchmarks are real.
Claude Opus 4.8
Anthropic's most capable Opus-tier model, built for complex agentic coding and enterprise work — a 1M-token context, adaptive thinking, and 128K max output, hosted only via the Claude API.
Kortex for NotebookLM
A Chrome extension that bolts import/export, folders, a prompt library and bulk tools onto Google NotebookLM — the power-user layer NotebookLM doesn't ship with.