Which AI tools and models are worth paying for, and which are not.
Reviews, verified pricing and head-to-head comparisons of AI models, agents, coding assistants and image, video and voice tools, from running them in production rather than a demo. Prices checked the week each piece goes out; new pieces most days.
Latest articlesWhat shipped, what broke, and what it really cost — from running production AI systems.

Kimi vs Claude
Kimi vs Claude for coding, agents and long documents: current models, context limits, hosting choices and when switching to K3 makes sense.Oct 19, 2026AI
Claude vs Copilot: Microsoft 365 for Daily Work
Choose Claude or Microsoft 365 Copilot for documents, email, meetings and analysis, with verified access controls and three worked business jobs.Oct 19, 2026AI
Chinese AI Models 2026: DeepSeek, Qwen, Kimi, GLM and MiniMax
Compare Chinese AI models by lab, license, API access and data terms. DeepSeek, Qwen, Kimi, GLM, MiniMax and ByteDance for business buyers.
Oct 19, 2026AI
Claude Cowork vs Claude Code
Choose Claude Cowork or Claude Code for reports, spreadsheet cleanups and bug fixes, with the app merge, rollout and access boundaries explained.Oct 19, 2026AI
Codex vs ChatGPT
Choose ChatGPT for explanations and Codex for repository changes. Compare environments, models, included access and the work each leaves to you.Oct 19, 2026AI
Sintra AI Review
Sintra's twelve helpers, Brain AI, integrations and a worked shop week, compared with Marblism, Viktor and Claude.Oct 18, 2026AI
Codex App: Worktrees, Automations and Your First Commit
Use the Codex app for parallel worktrees, scheduled tasks and Git review. Compare the CLI and IDE, then take two threads to reviewed commits.Oct 18, 2026AI
AI Agent vs Chatbot: What Changes When AI Can Act
Compare AI agents and chatbots through support, sales and operations examples, then use a vendor checklist to verify actions, risks and billing.Oct 18, 2026AI
Claude Opus vs Sonnet: Which 5.5 Model Fits Your Work?
Choose Sonnet 5.5 for routine work or Opus 5.5 for harder decisions. Compare writing, coding, research, settings, limits and verified API prices.Oct 18, 2026AI
DeepSeek vs Gemini
DeepSeek vs Gemini for coding, long documents, search agents and multimodal input. Compare deployment choices and decide which API fits your product.Oct 18, 2026AIThe other lanes.Pick the one you came for.
278 pieces
Build
Ship software with AI, whether or not you write code: coding agents, app builders, automation, MCP and the infra under it.120 piecesDesign
AI as a craft tool for designers, brand owners and creative directors: image, video, type, and the prompts behind the work.200 piecesBusiness
Voice and phone agents, customer service, sales and marketing, operations and AI search visibility, for the people who run a business.8 piecesPlaybooks
AI for your niche: the workflows that actually move, tool by tool, priced52 piecesExplained
What shipped, explained: every real release, decoded for the people who use it0 piecesLab
The agent journey, entry by entry: what shipped, what broke, what was decided, in the ventures I run228–228 / 228
Prefer this site in Google
Mark omidsaffari.com as preferred and Google lifts it in Top Stories, AI Overviews and AI Mode for you.
Newsletter
One letter, every Sunday.Working systems, not hot takes.
Weekly. No spam. Unsubscribe anytime.

