INEZA Felin-Michel
ViewpointHow to use GPT-6.1 Sol APl ?
GPT-6.1 Sol API guide: your first gpt-6.1-sol request, effort levels, Batch/Flex/Fast pricing, and the four changes to migrate from gpt-6-sol.
INEZA Felin-Michel
September 30, 2026
TutorialsIs GPT-6.1 Sol Free?
Is GPT-6.1 Sol free? No: it's for Plus and up in ChatGPT Work and Codex, and the API has no free tier. Here are the cheapest routes, with real cost math.
INEZA Felin-Michel
September 30, 2026
TutorialsHow to Use Claude Sonnet 5.5 for Free: Every Route That Works (and the Ones That Don't)
Is Claude Sonnet 5.5 free? Yes on Claude.ai (web, iOS, Android). Every free route checked, plus what isn't: Claude Code, the API, and Copilot Free.
INEZA Felin-Michel
September 29, 2026
TutorialsHow to Use Claude Sonnet 5.5 in Claude Code (and When to Keep Opus 5.5)
Claude Sonnet 5.5 Claude Code setup: v2.1.284+, claude --model claude-sonnet-5-5, effort levels, the sonnet alias trap, and when to keep Opus 5.5.
INEZA Felin-Michel
September 29, 2026
TutorialsClaude Sonnet 5.5 vs Opus 5.5: Half the Price, How Close on Quality, and When to Pay for Opus
Sonnet 5.5 vs Opus 5.5: $2/$10 vs $4/$20, benchmarks within a few points, and per-effort cost data that shows when Opus 5.5 is worth paying for.
INEZA Felin-Michel
September 29, 2026
TutorialsHow to use Qwen-Image-2.1: diffusers code, transparent output, and an API you can test
Run Qwen-Image-2.1 with diffusers: text-to-image, RGBA transparent output, editing with up to 10 references, a FastAPI wrapper, and Apidog tests for transparency and seed reproducibility.
INEZA Felin-Michel
September 28, 2026
TutorialsHow to use Qwen-Image-2.1 for free?
Every no-cost way to try Qwen-Image-2.1: Qwen Chat, the official Hugging Face Space, ModelScope, ComfyUI, and diffusers, plus what the research license lets you do with the output.
INEZA Felin-Michel
September 28, 2026
TutorialsClaude Opus 5.5 Prompt Caching: The Break-Even Math on $0.20 Cached Reads
Claude Opus 5.5 charges $0.20 per million cached input tokens against $4.00 fresh and $5.00 to write. Here is the break-even reuse rate, 21%, worked against real request shapes.
INEZA Felin-Michel
September 23, 2026
TutorialsGPT-6 Luna vs Gemini 3.8 Flash vs DeepSeek: What the Sub-$1 API Tier Actually Costs
Luna just moved into the sub-$1 bracket. The three headline prices are not the same kind of number: one is measured against a promotion, one expires January 1 2027, one changes with the UTC clock. Here is the sourced table, the cached-input math, and a one-collection way to me...
INEZA Felin-Michel
September 23, 2026
TutorialsGPT-6 Luna vs Sol vs Astra: Picking a Tier on Cost Per Task
Per-token price says Luna is a hundred times cheaper than Astra. Per task, on OpenAI's own published numbers, Sol at high effort beat Astra at low effort while costing roughly a quarter as much. How to pick a GPT-6 tier on the unit you actually pay in.
INEZA Felin-Michel
September 23, 2026
TutorialsClaude Opus 5.5 Runs 18-Hour Tasks: How to Design APIs for Long-Running Agents
Anthropic says Claude Opus 5.5 stays on task 18+ hours. That breaks timeouts, retries, idempotency windows, token lifetimes and streams. Nine concrete API fixes.
INEZA Felin-Michel
September 23, 2026
TutorialsHow to Get a Jev API Key (TypeSafe AI) ?
Step-by-step: create a TypeSafe AI account and Jev API key, make your first decision request with curl and the Python SDK, read the probability fields, and store, assert, and mock the request in Apidog.
INEZA Felin-Michel
September 18, 2026
TutorialsHow to Get a Resend API Key and Send Your First Email
Get a Resend API key step by step: verify a domain, scope the key, send your first email with curl, Node, and Python, and test it in Apidog.
INEZA Felin-Michel
September 18, 2026
TutorialsHow to Get a Perplexity API Key and Make Your First Sonar Request
Get a Perplexity API key in the console, add credits, and send your first Sonar request with curl, Python, and Apidog. Rate limits and errors included.
INEZA Felin-Michel
September 18, 2026
TutorialsHow to get a YouTube API key (YouTube Data API v3) and make your first request
Get a YouTube API key for the YouTube Data API v3: enable the API, create and restrict the key, then send your first request with curl, Python, and Apidog.
INEZA Felin-Michel
September 18, 2026