Blog

Insights, tutorials, and tools for developers.

Kimi K3.1 Pro VRAM Requirements

Kimi K3.1 Pro needs 1.56 TB for its MXFP4 weights before any cache. Which GPU nodes fit it, what a 512 GB Mac can run, and what 256K of context adds.

DevToolLab Team·November 8, 2026

Latest Articles

Guide

4 min

Safe Software Downloads for Developers

How malicious installers and typosquatted packages reach developer machines, and the verification habits that keep them off your workstation.

DevToolLab Team·November 7, 2026

Tutorial

7 min

How to Flush DNS on Mac, Windows, Linux

Run ipconfig /flushdns on Windows, dscacheutil and killall -HUP mDNSResponder on macOS, resolvectl flush-caches on Linux, and learn which cache you can't clear.

DevToolLab Team·November 6, 2026

Tutorial

9 min

OpenSSH 10.6p2: Check and Patch Alpine

OpenSSH 10.6p2 fixes a password login bypass on Linux systems without PAM, Alpine included. Check your host, set PasswordAuthentication no, then upgrade.

DevToolLab Team·November 5, 2026

71–80 of 237

Tutorial

7 min read

OpenAI Rate Limits in Python: Fix 429s

Handle OpenAI 429 rate limit errors in Python with the SDK's built-in retries, exponential backoff with jitter and a fallback to a second provider.

DevToolLab Team·September 30, 2026

Tutorial

8 min read

How to Validate a Credit Card Number

Strip spaces, check for 12 to 19 digits, run the Luhn checksum, then match the prefix to a brand. Working code in JavaScript, Python and Java, plus the errors.

DevToolLab Team·September 29, 2026

Playwright vs Cypress vs Selenium in 2026

Guide

10 min read

Playwright vs Cypress vs Selenium in 2026

Playwright, Cypress and Selenium compared on stars and downloads, plus what BrowserStack, Sauce Labs and TestMu AI charge to run them in CI.

DevToolLab Team·September 28, 2026

Best API Documentation Platforms in 2026

Guide

11 min read

Best API Documentation Platforms in 2026

Mintlify, ReadMe, Stoplight, Redocly and Scalar priced on what a custom domain and white-labeling cost, plus Swagger UI, the open-source core under most.

DevToolLab Team·September 27, 2026

Tutorial

8 min read

How to Use curl: 12 Commands for APIs

curl commands for GET, POST, PUT and DELETE, JSON and form data, bearer tokens, redirects and timing, plus fixes for the errors curl actually throws.

DevToolLab Team·September 27, 2026

Best WAF and Bot Detection Tools in 2026

Guide

10 min read

Best WAF and Bot Detection Tools in 2026

Cloudflare, DataDome, HUMAN Security and Akamai compared on real pricing and behavior, plus CrowdSec, the open-source WAF that costs nothing to self-host.

DevToolLab Team·September 26, 2026

Guide

9 min read

Developer Tools Pricing Index 2026

161 published prices for 76 products in 10 categories, each checked on September 26, 2026, with a free CSV. The same workload costs up to 36x more.

DevToolLab Team·September 26, 2026

Guide

10 min read

Best Distributed Tracing Tools in 2026

Jaeger, Grafana Tempo, SigNoz, Honeycomb, Datadog, Dash0 and AWS X-Ray priced on the same sampled trace volume, using a span size we measured.

DevToolLab Team·September 25, 2026·Updated September 26, 2026

8 Best Video Caption APIs for Social Media

Guide

12 min read

8 Best Video Caption APIs for Social Media

ZapCap, Shotstack, Creatomate, Bannerbear, ReelWords, Veed, fal and Submagic compared for captioning social media video at scale, from pricing to languages.

DevToolLab Team·September 25, 2026