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The Agentvendo AI Brief is a free newsletter on AI and tech for founders and operators. The launches, prices and research that matter, checked at the source, in five minutes.

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What's inside every issue

✓ The stories that matter

New models, prices, launches and research from the AI labs, filtered for people who build or run a business.

✓ Checked at the source

Every story links to the primary source: the lab's post, docs, paper or repo. No rumours dressed up as news.

✓ Open source worth trying

Trending GitHub repos and open-weight models, with what they're good for and any licence catches.

✓ A takeaway for founders

Each issue ends with what to actually do about it: pricing, tooling, risks, opportunities.

Read a sample issue

This is the start of issue #1. Every issue is also published on the site.

Issue #1 ·

Faster Claude, cheaper Gemini, and open weights everywhere

Welcome to the first Agentvendo AI Brief. Three times a week we pick the AI and tech news that actually matters if you build or run a business, check it against the original source, and explain it in plain words. Here is what moved in the last 48 hours.

Top stories

1 · Models

Claude Opus 5.5 Fast Mode is out of preview

Anthropic dropped the waitlist and beta header for Fast Mode on Opus 5.5. You get up to 2.5× faster output, priced at $8 per million input tokens and $40 per million output tokens. It is live on Azure Foundry, with Google Cloud listed as coming soon.

Why it matters: Speed now has a clear price tag. Use Fast Mode for the steps a customer is waiting on, and keep slow, standard calls for batch jobs that run overnight.

Source: Fast Mode docs · Release notes

2 · Models

Gemini 4 Argon reaches AI Studio, with a discount that ends Nov 30

Google's Gemini 4 Argon is now in AI Studio Build and Playground for Google AI Pro subscribers, and it is rolling out in the Antigravity coding tool with its own weekly quota. API pricing starts at an introductory $2 input / $10 output per million tokens until November 30, then doubles to $4 / $20.

Why it matters: Test it now while it is cheap, but put the December price in your spreadsheet before you build a product margin on it.

Source: Argon developer guide · Gemini API pricing

3 · Open weights

DeepSeek ships V4.1-Flash-1017 and a search API

DeepSeek released V4.1-Flash-1017 with open weights on Hugging Face, and it is already live in their app and API. The update focuses on shorter answers and finishing tasks faster. They also launched Search and Fetch APIs at $0.75 per 1,000 calls.

Why it matters: Cheap web search plus an open-weight model is the raw material for research and monitoring agents that cost cents per day to run.

Source: DeepSeek announcement

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Three times a week: Monday, Wednesday and Friday at 08:00 Bucharest time (07:00 CET, 01:00 New York). Each issue takes about 5 minutes to read.

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AI news moves fast, but most of it doesn't need your attention the same day. Three issues a week lets us verify every story, cut the noise and keep each issue short enough to finish.

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Adrian Cristache and the Agentvendo team, with AI agents helping research. A human-set rule: nothing goes in without a primary source.

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