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OpenAI DevDay: GPT-6.1 Sol, a Decisions API and Computer Use
At DevDay on 29 September OpenAI shipped GPT-6.1 Sol at $2/$10 with $0.10 cached input, a Decisions API on Luna and computer use in the Agents API. What to change in your stack.
Emma Watson
Growth at NeedBase
ChatGPT Users Can Now Spend Their Plan Inside Other Apps
OpenAI's DevDay opened ChatGPT Plus and Pro allowances to 16 partner apps, including Notion, Vercel and Devin. What 'Use your ChatGPT plan' means for pricing AI features in your SaaS.
Stripe's New Terms Make You Liable for Everything Your AI Agent Does
Stripe's 28 September agreement update says users are 'solely responsible' for AI agent actions. It binds existing users from 6 January 2027; Connect platforms must notify accounts by 7 November.
OUSD Launched Today and Is Now the Default Stablecoin on Stripe
Open USD went live on 30 September, issued by Stripe-owned Bridge and backed by Visa, Mastercard, Coinbase and Shopify. What it changes for SaaS teams paid in, or paying out in, stablecoins.
SaaS Valuation Multiples Nearly Halved in the First Half of 2026
The Forvis Mazars and PitchBook H1 2026 State of SaaS report puts median EV/EBITDA at 11.7x, down from 20.4x, while M&A hit a decade-high $439.7B. What it means for founders.
Claude Sonnet 5.5 Nearly Matches Opus 5.5 at Half the Price
Anthropic's Sonnet 5.5 keeps the $2/$10 price, has a 1M context window and comes close to Opus 5.5 on its launch benchmarks. How small SaaS teams should route and migrate.
Jeff Is an Open, Self-Hosted Jev Alternative at 0.8B Parameters
Jeff is a free, Apache-licensed 0.8B model that copies Jev's decision API and, per its README, answers in about 28 ms on a Mac. When a SaaS team should self-host classification.
MicroLLM Lab: What Tiny In-Browser LLMs Can Do for SaaS
A Hacker News demo runs seven tiny language models in a browser tab. What 26M to 360M parameter models are good for in a SaaS product, and what they are not.
OpenAI Reopens ChatGPT Pro $200, but With Half the Usage
OpenAI is reopening its $200 ChatGPT Pro plan after a September pause, but each subscription now buys roughly half the API-equivalent usage. What founders should do.
Pac-Bench Asked 30 AI Coding Setups to Build Pac-Man From One Line
Pac-Bench gave 30 model and harness setups one sentence and scored the Pac-Man games they built. What the results tell you about choosing a model, and how to run your own bake-off.
The WordPress Core Flaw CISA Says Is Already Being Exploited
CVE-2026-87902 lets an unauthenticated attacker make WordPress include a PHP file outside the theme, and on some servers run code. Every version since 4.7 is affected.
OpenAI and Anthropic Both Cut Flagship Prices on 22 September
GPT-6 Sol and Luna launched at half the price of GPT-5.6, and Claude Opus 5.5 arrived 20% cheaper than Opus 5 on the same day. What the new rate cards mean for your margins.
An AI Agent Memory Package Was Poisoned on npm and PyPI
On 23 September, MemTensor releases on npm and PyPI shipped a Go credential stealer that also read agent prompts. Which versions are bad and what to rotate if you installed one.
Vercel's Free Tier Now Keeps Only Three Production Deployments
Since 16 September, Vercel Hobby projects keep just three recent production deployments, down from ten, and extra ones are deleted immediately once you pass 10GB of storage.
Google's Fourth Spam Update of 2026 Could Run Into October
Google started the September 2026 spam update on 24 September with a rollout window of up to two weeks, far longer than the three earlier 2026 spam updates took to finish.
An AI Infrastructure Startup Just Raised $3.9 Billion
Crusoe's Series F values it at $30.9 billion and comes with $140 billion in contracted bookings. What the round says about who is actually capturing AI infrastructure spending right now.
Cisco's Perfect-10 ISE Bug Is Already Being Exploited
CVE-2026-76460 lets an unauthenticated attacker bypass Cisco Identity Services Engine and run commands as root. CISA gave federal agencies until 19 September to patch.
A Zero-Click Flaw Hit Claude Code, Codex, Copilot and Gemini CLI
Plugin4Shell lets a malicious plugin update silently swap in attacker code with no click required. Two of the four affected tools will never get a fix - here is what to check today.
Salesforce Gave Its AI Agents Names, Job Titles and Long Memories
Agentforce's new lineup - Casey, Hunter, Marshall and four others - pairs personas with a runtime that lets one of them pursue goals for months. What the packaging says about selling AI features.
DeepSeek Quietly Swapped Its Flagship Model for a Cheaper One
From 14 September, every API call to deepseek-v4-pro is silently served by the new V4.1 Flash instead. What changed, what it costs, and why you should check your own integration this week.
GitLab's Maximum-Severity Flaw Is Already Being Scanned For
CVE-2026-85706 lets anyone read files off a self-managed GitLab server with one request. CISA gave federal agencies until 14 September to patch - here is what to check today.
Google's Biggest Search Change in 29 Years Just Hit the EU
Google rolled out DMA-mandated search changes on 8 September, calling it the largest quality cut in Search history. If you sell into the EU, your visibility rules just changed.
OpenAI Just Collapsed the Voice-Agent Stack Into One Model
GPT-Live-1 listens and speaks simultaneously in one model instead of a three-stage pipeline, priced at $0.05 a minute. What it changes for anyone building a voice product.
Mistral Just Raised Europe's Largest Tech Round Ever
Mistral AI raised €3 billion at a €21 billion-plus valuation in a Samsung-led round, Europe's largest tech equity raise on record. What it signals for anyone using Mistral's models.
France's E-Invoicing Mandate Now Covers Every VAT-Registered Business
From 1 September, every VAT-registered business in France, including foreign SaaS sellers, must be able to receive structured e-invoices. Penalties run up to €15,000 a year.
Apple's EU App Store Fees Change Again on 1 October
Apple is replacing its per-install Core Technology Fee with a transaction-based commission and a new rate card, effective 1 October. Here is what actually changes for your app.
Nvidia Just Bought the Repo Your Stack Depends On
Nvidia is paying $12.93 billion for Hugging Face, the hub 18 million developers and 3 million models run through. Here's what to check before the 2027 close.
Salesforce Just Rewrote How It Prices AI
Salesforce ditched per-product pricing for three bundled tiers with scaling Flex Credit pools, a live case study in pricing AI features without metering every action.
One Acquirer Bought Airtable and Miro in the Same Week
Bending Spoons bought Airtable and Miro six days apart, both at discounts to their historic peaks. What the roll-up means if you use or compete with either.
GitHub Copilot's Business Plans Switch to Upfront Billing
From 1 October, GitHub Copilot Business and Enterprise seats are billed upfront, and over-allowance usage may need a payment method on file. What to check first.
Claude Code Just Patched Permission Bypasses You Trusted
Claude Code 2.1.269 fixed four ways deny-rules on Edit, Write and Read could be silently bypassed. Update now and re-check any rule you rely on.
Anthropic Lets You Manage Claude Agents Like Infrastructure
ant apply brings version-controlled, diffable, lockfile-reproducible deploys to Claude agents, alongside a new server-side auto permission mode.
A Cheaper Multi-Model Swarm Beat Frontier Models on Benchmark
Sakana AI reports Fugu Ultra v2 scored 48.3 on Chartography versus 27.3 for Opus 5, using a swarm of smaller models instead of one frontier model.
One Stolen Dev Token Became Full Admin Access in Three Hours
Anthropic threat report shows a stolen developer token reaching full admin control in about three hours. Audit your token scope this week.
Two SonicWall Zero-Days Are Being Chained Into Full Server Takeover
SonicWall SMA1000 VPN appliances face two chained zero-days rated up to CVSS 10.0, already on CISA's exploited list. Patch now if yours faces the internet.
Redis's Own Security Team Disputes a 9.8 CVE Score. Patch Anyway
Redis disputed NVD's 9.8 rating for a TLS remote-code-execution bug, arguing 7.5 under CVSS v4. A public exploit now exists regardless of who is right.
The npm Worm From May Is Back, and It Slipped Past the Scanner
Four npm packages published in September 2026 carried the same payload as May's Shai-Hulud worm, and npm's own malware scanning missed it on republish.
Australia's New Scam Law Puts Your App in Scope From This Month
Australia's Scams Prevention Framework brought mandatory AFCA membership for digital platforms on 1 September 2026, with penalties up to AUD $50 million per contravention.
Ofcom's Platform Register Is Live, Next Deadline Is 2 October
Ofcom's categorised-platforms register went live 10 July 2026 at the 7 million UK user threshold, with a fraud-advertising consultation closing 2 October 2026.
The $38 Billion Settlement That Ends 'Honor All Cards'
A federal judge granted preliminary approval to a $38 billion Visa/Mastercard interchange settlement that cuts fees and ends mandatory acceptance of every card tier.
PayPal's US User Agreement Changes on 14 September
PayPal's updated US User Agreement, effective 14 September 2026, switches arbitration providers and applies retroactively to existing disputes over held funds or accounts.
Mastercard Doubled Its Cross-Border Fee in Canada
Mastercard's cross-border assessment fee in Canada rose to a unified 100 basis points on 20 July 2026, raising costs on foreign-currency transactions.
Search Console's AI Traffic Report Is Now Live for Every Site
Google's new Generative AI performance report shows clicks and impressions from AI Overviews and AI Mode separately, and a new toggle lets you opt out entirely.
Google Is Auto-Migrating Your Search Campaigns to AI Max This Month
Google is automatically converting Search campaigns still on Broad Match and Auto-Created Assets into AI Max throughout September 2026, whether advertisers opt in or not.
Shopping Ad Clicks Are Up 20%. Impressions Are Down. Here Is Why
Optmyzr and Smarter Ecommerce's Market Observer data shows Shopping ad click-through rate up 17-20% year-over-year even as impressions fall, and AI Overviews may be why.
ChatGPT Recommends Growing Brands 6x More Than Shrinking Ones
SOCi's 2026 Local Visibility Index finds AI assistants recommend a small fraction of a brand's locations compared with Google's local 3-Pack, and growth status matters.
Devin's Maker Just Raised $2B at a $48B Valuation
Cognition's Series E nearly doubled its valuation in four months, with run-rate revenue the company says grew from $492M to almost $900M. What the round signals for teams choosing a coding agent.
Microsoft's Biggest Patch Tuesday Ever Has Two Active Zero-Days
September's Patch Tuesday fixed roughly 970 flaws, Microsoft's largest release on record, including two zero-days CISA confirms are already under attack. Here is what to patch first.
ChatGPT, Claude and Grok All Went Down Within Hours of Each Other
Three separate AI providers had outages the same morning on 3 September, with no published shared root cause. If your product calls one model with no fallback, this is the week that got harder to justify.
Google Play's New Fees Reach Australia and Japan on 30 September
The US, UK and EEA got Google Play's split fee structure in June. On 30 September it extends to Australia and Japan, alongside a discount programme for smaller developers. Here is the actual math.
The UK Bill That Puts MSPs Under a 24-Hour Reporting Clock
The Cyber Security and Resilience Bill entered House of Lords committee stage on 1 September, bringing managed service providers into scope for the first time, with fines of up to £17 million.
Wonderful Doubled Its Valuation to $5B in Six Months
Wonderful raised $550M at a $5B valuation on 1 September, just six months after a $2B valuation. The round is a signal about where enterprise AI capital is concentrating, and what that means nearby.
A New AI Guardrail Runs on CPUs Instead of GPUs
Lasso Security raised $30M and launched LEAP, an AI guardrail that inspects model traffic without needing a GPU. For anyone paying to run safety checks, that is a real cost question worth asking your vendor.
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