What Is KV Cache and Why Your LLM App Gets Slow on Long Conversations
KV cache is why your LLM app gets slow on long conversations. Here’s how prompt caching, vLLM, and SGLang actually work — and what breaks in production.
VTechNews Editorial Team
Claude vs ChatGPT for Writing: A 60-Day Head-to-Head on 8 Content Formats
Claude Sonnet 4.6 vs GPT-5 across 8 real content formats. 60-day test reveals which wins for structure, accuracy, and creative short-form.
Custom GPTs for Business: 12 We Built, What Actually Worked, and 4 Fails
Built 12 custom GPTs for real business tasks: 8 shipped, 4 killed. Operator retrospective on what works, what fails, and the real maintenance cost.
OpenCode vs GitHub Copilot vs Claude Code: The June 2026 Coding Agent Rankings
OpenCode hit 176K GitHub stars while Copilot switched to per-credit billing. How all three agents performed on 8 real engineering tasks — with exact cost math.
AI Tools for Solopreneurs: The Full Stack That Replaces a 3-Person Team for Under $150/mo
The documented solopreneur AI stack: Claude Pro, Perplexity Pro, n8n, and Descript for $100-127/month — with exact workflows, failure modes, and ROI math.
n8n vs Zapier in 2026: Real Cost Breakdown After Running 50,000 Tasks on Each
Zapier billed $13,398 for the same workload n8n Cloud billed $98. Real cost breakdown after 3 months of 50,000 monthly executions across both platforms.
Cognition AI Devin 2.0 Review: What a $26B Autonomous Dev Agent Actually Delivers
Devin 2.0: $20/mo entry, down from $500. We ran 10 real engineering tasks and found ACU costs balloon 3-8x on complex debugging. Completion rates and failure modes inside.
ChatGPT vs Gemini 2.5 Pro in 2026: 7 Real Tasks Tested Head-to-Head
I ran 7 identical real-world tasks on ChatGPT (GPT-5) and Gemini 2.5 Pro. Here is where each wins — and the one test where Gemini’s 1M context window changes everything.
Claude Sonnet 4.6 vs Gemini 2.5 Pro: Which AI Model Actually Saves You Time?
Claude Sonnet 4.6 vs Gemini 2.5 Pro on 5 real office tasks: PDF analysis, transcripts, emails, code, slides. We tested both — here is which saves more time.
40 ChatGPT Photo Prompts That Actually Work: Results Compared
40 tested ChatGPT photo prompts across 6 categories — GPT Image 1.5 results, safety filter workarounds, and exact phrasing for consistent outputs.