# Thoughts on Personal Intelligence

Stories, best practices and ideas on how to use AI assistants for work and personal ops.

For the complete post catalog, see [the Vellum blog index](https://www.vellum.ai/blog/llms.txt).

## Latest posts

- [GPT-6 Astra Benchmarks Explained](https://www.vellum.ai/blog/gpt-6-astra-benchmarks-explained): Every GPT-6 Astra benchmark explained, and compared head to head with GPT-5.6 Sol, Claude Fable 5.1, Opus 5, and Gemini 3.8 Flash.
- [Agent Within Reach](https://www.vellum.ai/blog/agent-within-reach): Voice conversations run deeper than typed. The hard part is starting one.
- [Gemini 3.8 Flash & 3.8 Flash Cyber Benchmarks Explained](https://www.vellum.ai/blog/gemini-3-8-flash-benchmarks-explained): Every Gemini 3.8 Flash benchmark explained, and compared head to head with Claude Opus 5 and GPT-5.6 Sol.
- [Why Subscriptions > Credits for AI Products](https://www.vellum.ai/blog/why-subscriptions-beat-credits-for-ai-products): We built our first monetization path around credits because AI costs are variable. Customers taught us that accurate metering and a good buying experience are not the same thing.
- [Claude Fable 5.1 & Claude Mythos 5.1 Benchmarks Explained](https://www.vellum.ai/blog/claude-fable-5-1-mythos-5-1-benchmarks-explained): A breakdown of Anthropic's Claude Fable 5.1 and Mythos 5.1 benchmarks. Head-to-head scores against Fable 5, Opus 5, and GPT-5.6 Sol across scientific research, terminal coding, knowledge work, computer use, reasoning, business workflows, and coding, plus the safeguard zeros behind the table and the cache-read price cut that pulled Cognition's Devin traffic on launch day.
- [How Vellum Remembers](https://www.vellum.ai/blog/vellum-memory-system-breakdown): Learn how we built the Vellum Assistant's memory system to remember you, your context, and work.
- [GPT-5.6 Sol vs Terra vs Luna: Which Tier Should You Actually Use?](https://www.vellum.ai/blog/gpt-5-6-sol-terra-luna-explained): A tier-by-tier breakdown of GPT-5.6's three models: benchmarks, pricing, reasoning modes, and which one to route your work to.
- [Claude Opus 5 Benchmarks Explained](https://www.vellum.ai/blog/claude-opus-5-benchmarks-explained): A side-by-side read of Claude Opus 5 against Fable 5, Opus 4.8, and GPT-5.6 Sol on every benchmark Anthropic published, including the ARC-AGI 3 result that triples the next-best model.
- [How We Gave Your Assistant a Voice](https://www.vellum.ai/blog/vellum-assistant-ai-speech-pipeline-explained): How we made an AI speech pipeline feel like one continuous thing
- [2026 Marketer's Guide to AI Agents for Marketing Operations](https://www.vellum.ai/blog/complete-ai-agents-guide-for-marketing): Discover the 15 AI agents every marketing team needs in 2026 to automate high impact marketing operations.
- [How a Small Construction Firm Automated Its Bookkeeping With an AI Assistant](https://www.vellum.ai/blog/ai-assistant-construction-firm-bookkeeping): A non-engineer at a small construction firm built an AI assistant to handle the daily bookkeeping. How he set it up without writing the scaffolding himself, and why open source was the deciding factor.
- [How a 3x Founder Made His AI Chief of Staff with Vellum Assistant](https://www.vellum.ai/blog/vellum-assistant-for-ai-chief-of-staff): A serial founder spent his between-companies weeks building his own AI chief of staff, then stopped and bet on a Vellum assistant instead. Why the build-versus-buy math favors a dedicated team, and how he runs his life through one funnel now.