The SaaSCity blog
Guides, insights, and resources for SaaS builders. Learn how to launch, grow, and sell your software business.
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Build with AI
59% of AI Agent Tokens Go to Code Review, Not Code Generation — New Research
A new study tracked exactly where tokens go in agentic software engineering. The biggest cost isn't writing code — it's the automated review loop eating 59.4% of every token budget.
News
Anthropic Already Trained Mythos 6 While Its Most Powerful Models Sit Banned by the US Government
Fable 5 and Mythos 5 remain suspended under a US export control order. According to AI analyst Andrew Curran, a stronger successor is already done — and the compute freed by the ban likely sped it up.
Build with AI
10 Open-Source Claude Code GitHub Repos Worth Cloning in 2026 (Frameworks, Skills & Workflows)
The Claude Code repos actually worth cloning in 2026 — the official tool, the agentic frameworks that encode real engineering discipline, the skill libraries, and the context tools. With real, verified star counts and an honest must-clone vs nice-to-have tier list.
News
OpenAI Custom Chip Jalapeño: 50% Cheaper AI Inference and What It Does to Your SaaS Margins
OpenAI and Broadcom just unveiled Jalapeño — a 3nm custom inference ASIC built in nine months that claims 50% lower cost per token than current GPUs. Here's what the specs mean and why SaaS founders should be paying attention.
News
Mythos Model Alternatives From Asia Are Already Outscoring Claude on Benchmarks
While Anthropic's export ban drags into its third week, Sakana AI's Fugu Ultra scored 73.7 on SWE-Bench Pro versus Claude Opus 4.8's 69.2 — and China's 360 walked straight into the vulnerability-discovery market that Mythos owned.
SaaS Business
Fintech Engineering Patterns: The Handbook Every SaaS Builder Needs Before Touching Money
Money bugs don't get filed in Jira — they get filed with regulators. Jacek Piłat's Fintech Engineering Handbook is the clearest distillation of fintech engineering patterns that prevent those bugs from shipping.
News
GPT-5.6 Sol: OpenAI's Next-Gen Model and What Three Tiers Mean for SaaS Founders
Twenty companies got access to GPT-5.6 Sol yesterday. The US government picked them. Here's what OpenAI's new three-tier model family — Sol, Terra, and Luna — means for your AI token costs and stack decisions.
Build with AI
App Store Connect 'In-App Purchases and Subscriptions' Section Missing? The Complete Fix for Guideline 2.1 IAP Rejections (2026)
Your first subscription has to ship with the binary — but the section that links them has vanished from your version page, and Apple keeps rejecting you for 'no plans available.' Here's exactly why it happens and the step-by-step fix that actually works.
News
The 'Papers, Please' Era of the Internet: What Age Verification Laws Mean for SaaS Founders
Twenty-five US states now require identity verification to access parts of the internet. Not the dark web — the normal internet. Here's what the global push for online age verification means for SaaS founders building products with social features, UGC, or public communities.
Build with AI
Best MCP Servers for Claude Code in 2026 (+ Exact Setup Commands)
The MCP servers actually worth connecting to Claude Code — GitHub, Context7, Playwright, databases, and more — with the exact, docs-verified claude mcp commands to add them, a starter stack, and how to keep many servers without blowing up your context.
Build with AI
Claude Code Projects in 2026: Real Shipped Builds, Project Structure & the Shift to Agent Loops
The builder's reference for Claude Code projects in 2026 — how real products actually get shipped: the .claude/ project structure that scales, when to use skills vs MCP, real builds people launched, and the shift from prompting to writing agent loops.
News
EU AI Act Goes Live August 2026: What SaaS Founders Actually Need to Know
August 2 is 40 days away. If your SaaS serves EU users and has any AI feature — a chatbot, a suggestion engine, AI-generated content — you have 40 days to be compliant. Here's what the EU AI Act actually requires, and what most founders get wrong.
Launch & Growth
Their React Form Was Pulled After 3 Days. The HTML-First Rebuild Doubled Completions.
An overseas contractor shipped a React form for a regulated utility company. Three days later it was pulled — broken accessibility, loading spinners, localStorage storing upload files. The HTML-first rebuild that replaced it doubled form completion rates. Here's why that happened and what it means for your SaaS.
Build with AI
Oak VCS: The Git Alternative Built for AI Agents (And Why It Changes How You Think About Version Control)
Git was designed for humans working sequentially. Oak was designed for agents working in parallel — with lazy mounts, branch-per-task isolation, machine-readable JSON output, and up to 95% faster snapshots. Here's what it is, how it works, and whether it belongs in your stack.
Build with AI
Claude Code for Beginners: Install, Your First Project, and the Habits That Matter (2026)
A no-fluff getting-started guide to Claude Code: the exact install commands for every OS, what to type in your first ten minutes, and the four habits that separate people who get great results from people who fight the tool.
Build with AI
Claude Code Project Ideas: 15 Builds With Copy-Paste Prompts (Beginner → Advanced)
Fifteen things actually worth building with Claude Code, sorted from first-weekend-easy to ship-it-as-a-product, each with a real starter prompt you can paste in right now. Plus real projects people already shipped.
Reviews
Your Website Has Visitors. They Just Can't See Each Other — TownSquare Fixes That.
TownSquare drops a single script tag onto your site and makes strangers visible to each other in real time — no accounts, no cookies, no surveillance. A Show HN hit that asks a question the modern web stopped asking: what if your site felt alive?
SaaS Business
10 Micro SaaS Ideas Worth Building in June 2026 (While AI Wrappers Die)
90% of AI wrapper startups will fail before 2027. Meanwhile a quieter cohort is hitting $5K–$50K+ MRR by solving one specific problem for one specific niche. Here are 10 well-timed, defensible, solo-buildable micro SaaS ideas for June 2026 — plus the playbook to ship one.
News
GPT-5.5 Hallucinates 3x More Than MIT-Licensed GLM-5.2 — Here's What the Benchmarks Actually Show
Independent benchmarks reveal GPT-5.5 hallucinates 3x more than the open-source GLM-5.2. If you're building an AI product, this changes your model selection math.
News
Epic Games Just Open-Sourced Lore: The Free Perforce Alternative Studios Have Waited Decades For
On June 17 2026 at State of Unreal, Epic open-sourced Lore — an MIT-licensed, Rust-written version control system built for game-scale binaries. Not a Git extension. Not Perforce repainted. Here's the architecture, the honest pre-1.0 status, and who should actually care.
News
The Company That Invested $13 Billion in Anthropic Just Triggered Its Government Shutdown
Amazon CEO Andy Jassy called Treasury Secretary Scott Bessent on June 12 to report a jailbreak in Claude Fable 5. The next day, the US government shut it down. Amazon is Anthropic's biggest investor, cloud provider, board member, and direct competitor.
Build with AI
StackScope Crawled 40,000 Indie Launches. Here's What Founders Actually Ship With.
Real data from StackScope on what founders actually build and deploy — not what they tweet about. One-third of all indie launches run on Vercel. Tailwind is on 54% of everything. React isn't as dominant as you think once you control for hosting.
News
US Government Orders Anthropic to Kill Fable 5 and Mythos 5 — And the Jailbreak That Triggered It Was Already in GPT-5.5
At 5:21 p.m. on a Friday, the US government ordered Anthropic to pull global access to Claude Fable 5 and Claude Mythos 5. This is the first time a commercial frontier AI model has been treated as an export-controlled national security asset.
News
Kimi-K2.7-Code Drops: Moonshot AI's Strongest Open-Source Coding Model Yet (+21.8% on Kimi Code Bench v2)
Moonshot AI just released and open-sourced Kimi-K2.7-Code, its most capable coding model. +21.8% on Kimi Code Bench v2, 30% fewer reasoning tokens, better long-horizon performance, and 6x High-Speed Mode coming soon. Available now via API and Kimi Code.