> ## Content Index > Fetch the complete content index at: https://www.thenewway.ai/llms.txt > Use this file to discover other available public pages before exploring further. # Anthropic keeps Fable 5 in your Claude plan — the model war forced its hand - URL: https://www.thenewway.ai/anthropic-keeps-fable-5-in-your-claude-plan-the-model-war-forced-its-hand/ - Published: 2026-07-20T14:45:30.000Z - Updated: 2026-07-29T19:44:02.000Z - Description: Anthropic reverses and keeps Fable 5 in Max; Kimi K3 tops a coding leaderboard then sells out; Qwen 3.8 ships; OpenAI quietly cuts Codex’s context window; and Claude Code swaps its runtime. - Author: The New Way The model war ate the week. Anthropic reversed course and kept Fable 5 inside its subscription plans; Moonshot’s Kimi K3 climbed to the top of a coding leaderboard and promptly ran out of capacity; Alibaba’s Qwen 3.8 landed calling itself “second only to Fable 5.” Underneath the leaderboard theatre, two quieter changes actually move your day: OpenAI trimmed Codex’s context window, and Claude Code swapped the engine under its own hood. The daily pulse of AI coding tools — what shipped, what matters, what’s next. 📌 **In this issue** • [Anthropic keeps Fable 5 in Max — at 50% of the limits](https://www.thenewway.ai/anthropic-keeps-fable-5-in-your-claude-plan-the-model-war-forced-its-hand/#anthropic-backtracks-fable-5-stays-in-max-and-team-premium-%E2%80%94-at-half-the-usage-limits) • [Kimi K3 tops a coding leaderboard, then runs out of capacity](https://www.thenewway.ai/anthropic-keeps-fable-5-in-your-claude-plan-the-model-war-forced-its-hand/#kimi-k3-tops-a-coding-leaderboard-over-fable-5-and-gpt-56-%E2%80%94-then-runs-out-of-capacity) • [Qwen 3.8 ships — 2.4T params, “second only to Fable 5”](https://www.thenewway.ai/anthropic-keeps-fable-5-in-your-claude-plan-the-model-war-forced-its-hand/#alibaba-ships-qwen-38-%E2%80%94-24t-parameters-and-it-calls-itself-%E2%80%9Csecond-only-to-fable-5%E2%80%9D) • [Theo: Fable 5 vs GPT-5.6 Sol — same tier, very different](https://www.thenewway.ai/anthropic-keeps-fable-5-in-your-claude-plan-the-model-war-forced-its-hand/#theo-breaks-down-fable-5-vs-gpt-56-sol-%E2%80%94-%E2%80%9Cthe-biggest-and-best-but-very-different%E2%80%9D) • [OpenAI quietly cut Codex’s context window 372K → 272K](https://www.thenewway.ai/anthropic-keeps-fable-5-in-your-claude-plan-the-model-war-forced-its-hand/#openai-quietly-cut-codex%E2%80%99s-context-window-from-372k-to-272k-tokens) • [Claude Code now runs on Bun rewritten in Rust](https://www.thenewway.ai/anthropic-keeps-fable-5-in-your-claude-plan-the-model-war-forced-its-hand/#claude-code-now-runs-on-bun-rewritten-in-rust-%E2%80%94-10-faster-startup-and-nobody-noticed) • [A dev team’s 7 recurring fixes in AI-built apps](https://www.thenewway.ai/anthropic-keeps-fable-5-in-your-claude-plan-the-model-war-forced-its-hand/#a-dev-team%E2%80%99s-7-recurring-fixes-in-ai-built-apps-%E2%80%94-starting-with-secrets-in-the-frontend) --- ## The model war ### Anthropic backtracks: Fable 5 stays in Max and Team Premium — at half the usage limits Two weeks after signalling it would pull its best model behind API-only pricing, Anthropic reversed. From today (July 20), the @claudeai account says Fable 5 is included in all Max and Team Premium plans “at 50% of limits,” while Pro and Team Standard keep access through usage credits plus a one-time $100 credit. Simon Willison reads it as competitive pressure — with GPT-5.6 Sol and Kimi K3 in the market, charging $100–200/month for a plan that excludes your flagship model stopped being tenable. The catch worth stating plainly: staying in the plan isn’t staying unlimited — it’s half the limits up top, metered credits below. > Beginning July 20, Claude Fable 5 will be included in all Max and Team Premium plans, at 50% of limits. > > Pro and Team Standard users will continue to have access to Fable via usage credits, and will receive a one-time $100 credit. > > Demand for Fable has been challenging to… > > — Claude (@claudeai) [July 18, 2026](https://x.com/claudeai/status/2078302415804379218?ref%5Fsrc=twsrc%5Etfw&ref=thenewway.ai) --- ### Kimi K3 tops a coding leaderboard over Fable 5 and GPT-5.6 — then runs out of capacity Moonshot’s Kimi K3 took the #1 spot on the Frontend Code Arena, ahead of Fable 5 and GPT-5.6 Sol — the r/LocalLLaMA thread (2,000↑) is where the crowing is loudest (“beat frontier models that were ‘too dangerous’ for public use”). Then demand caught up: Moonshot posted it is [“temporarily pausing new subscriptions”](https://x.com/kimi%5Fmoonshot/status/2078855608565207130?ref=thenewway.ai) after 48 hours pushed it “close to the limits of our current capacity,” and r/vibecoding hit an actual “Sold out” screen. Read it two ways at once — a leaderboard win is one benchmark, not a verdict, but “too much demand to onboard you” is a harder-to-fake signal about who’s actually reaching for it. > [KIMI K3 Beats Claude Fable and GPT 5.6 sol in arena.ai!!!](https://www.reddit.com/r/LocalLLaMA/comments/1uydii0/kimi%5Fk3%5Fbeats%5Fclaude%5Ffable%5Fand%5Fgpt%5F56%5Fsol%5Fin/?ref=thenewway.ai) > by [u/Gohab2001](https://www.reddit.com/user/Gohab2001/?ref=thenewway.ai) in [LocalLLaMA](https://www.reddit.com/r/LocalLLaMA/?ref=thenewway.ai) --- ### Alibaba ships Qwen 3.8 — 2.4T parameters, and it calls itself “second only to Fable 5” Alibaba’s Qwen team announced Qwen 3.8 at a stated 2.4 trillion parameters, describing it as “one of the most powerful models available today… second only to Fable 5” — an unusually candid self-ranking. Open weights are promised “soon,” but aren’t out yet. Give it the skepticism Kimi K3 earned last week: the model ships first and the weights follow later (and in Kimi’s case the open-weights line briefly vanished from the docs). Judge it when you can run it. > Qwen3.8 is launching and going open-weight soon!🌐 > > With a massive 2.4T parameters, this model is continuously evolving. We believe it’s one of the most powerful model available today, compatible to leading frontier AI models , second only to Fable 5. > > You don't have to wait to… [pic.twitter.com/JS3ID73IYS](https://t.co/JS3ID73IYS?ref=thenewway.ai) > > — Qwen (@Alibaba\_Qwen) [July 19, 2026](https://x.com/Alibaba%5FQwen/status/2078759124914098291?ref%5Fsrc=twsrc%5Etfw&ref=thenewway.ai) --- ### Theo breaks down Fable 5 vs GPT-5.6 Sol — “the biggest and best, but very different” With the leaderboards reshuffling by the day, Theo’s head-to-head is a practitioner counterweight to the benchmark headlines: both are frontier models, he argues, but they behave differently enough in real use that the “which is best” question is the wrong one. Worth a watch before you switch your daily driver on the strength of one arena result. --- ## Shipping with AI: what works, what breaks ### OpenAI quietly cut Codex’s context window from 372K to 272K tokens A metadata backport merged into Codex’s 0.144 release line ([PR #33972](https://github.com/openai/codex/pull/33972/files?ref=thenewway.ai), merged July 18) drops GPT-5.6’s context\_window and max\_context\_window from 372,000 to 272,000 tokens — a 100K cut that reaches stable clients in the next hotfix. No changelog line announced it; it’s in the diff. If you’ve been counting on Codex to hold a large repo in context, that headroom just shrank by a quarter. (It lands amid the usage-limit resets people are tracking at codex-resets.com.) --- ### Claude Code now runs on Bun rewritten in Rust — 10% faster startup, and nobody noticed Since v2.1.181 (June 17), Claude Code has shipped on the Rust port of Bun — quietly. Bun’s creator Jarred Sumner: “Startup got 10% faster on Linux but otherwise, barely anyone noticed. Boring is good.” Simon Willison confirmed it on his own install; the embedded runtime reports Bun v1.4.0, a version Bun hasn’t formally released yet (it’s out as a canary). Nothing you need to do — but a reminder of how much infrastructure churns silently under the tools you run every day. (The embed shows a one-liner to check your own install.) > you can also just preload a tiny script to print the bundled Bun version: > > cat > /tmp/bun-version.ts <<'EOF' > console.log("embedded bun:", Bun.version); > process.exit(0); > EOF > > BUN\_OPTIONS="--preload=/tmp/bun-version.ts" claude --version > > this shows 1.4.0, which is the Rust version… > > — AjanRaj (@ajanraj25) [July 19, 2026](https://x.com/ajanraj25/status/2078825794701242697?ref%5Fsrc=twsrc%5Etfw&ref=thenewway.ai) --- ### A dev team’s 7 recurring fixes in AI-built apps — starting with secrets in the frontend A developer whose team spends much of the year turning AI-built prototypes into production apps (r/vibecoding, 1,300↑) lists the same seven failures they hit every time — and the top two are security. Secrets committed to the repo or shipped in the frontend: “search your own code for sk- and secret… if real values come up, rotate them today, not after launch.” And UI-only access control — admin buttons hidden from non-admins while the API happily answers anyone who calls it directly. If an AI wrote most of what you’re about to ship, this is the pre-flight checklist. > [I've cleaned up a dozen vibe-coded apps this year. The same 7 problems show up every single time](https://www.reddit.com/r/vibecoding/comments/1uypcye/ive%5Fcleaned%5Fup%5Fa%5Fdozen%5Fvibecoded%5Fapps%5Fthis%5Fyear/?ref=thenewway.ai) > by [u/yagnik\_thanki](https://www.reddit.com/user/yagnik%5Fthanki/?ref=thenewway.ai) in [vibecoding](https://www.reddit.com/r/vibecoding/?ref=thenewway.ai) --- ## Also worth your time [Hugging Face security incident report](https://huggingface.co/blog/security-incident-july-2026?ref=thenewway.ai) — the disclosure’s sharpest line: “the attacker was bound by no usage policy, while our own forensic work was blocked by the guardrails.” (r/LocalLLaMA 1,215↑) [“I found a $500K WordPress RCE with GPT-5.6 and $25”](https://slcyber.io/research-center/exploit-brokers-pay-500000-for-a-wordpress-rce-i-found-one-with-gpt5-6/?ref=thenewway.ai) — a security researcher’s writeup; dual-use, single-source, worth a skeptical read. (HN 254↑) [What AI did to Stack Overflow, in one graph](https://data.stackexchange.com/stackoverflow/query/1953768?ref=thenewway.ai#graph) — question volume over time. (HN 471↑) --- The New Way is human-curated — a person picks every story. The summaries are written with AI (Claude) and reviewed before we hit send.