LatestClaude Code
Claude Code 403, 503, and 529 Errors: Find the Source, Then Fix
A 403, 503, or 529 in Claude Code can come from your proxy, your Anthropic account, Anthropic's capacity, or a gateway in between. Run /status first.
14 min
Built for real engineering decisions
AI Model & API Guides
Source-linked guidance for AI models, API integration, and developer workflows—turning fast-changing prices, quotas, capabilities, and limits into decisions you can verify.
- Primary sources first
- Reproducible steps and failure boundaries
- Volatile facts carry review dates
- 472 articles
- 6 languages
- 12 topics
- Updated Sep 29, 2026
API Guides
Nano Banana API Docs and Tutorial: Key, Model IDs, and Code
Nano Banana is Gemini's image model family, called through the Gemini API with an AI Studio key. Start with gemini-3.1-flash-image on the Interactions API.
14 min
Claude Code
Claude Code API Overloaded (529): Switch Models or Add a Fallback
Claude Code shows a 529 overload only after retrying up to 10 times, and it never counts against your quota. Switch models with /model or set a fallback chain.
10 min
API Guides
Free Gemini API Key for Students: What Is Free and What Isn't
No student-only Gemini API key exists; students get the same free tier as everyone. The Google AI Pro student year helps API work only after you enable billing.
15 min
AI Tools & Guides
Grok Free Limit: What xAI Publishes, How It Resets, What to Do
xAI publishes no message count for free Grok as of September 27, 2026. Free Chat and Voice have their own limit and reset; check Settings → Usage before paying.
14 min
API Guides
OpenRouter Alternatives: Free Models, Fees, and When to Switch
OpenRouter's free models cap at 50 requests a day until a one-time $10 top-up; Vercel, Requesty, Cloudflare, LiteLLM, or direct free tiers each fix one problem.
16 min
Developer Tools & Agents
Google AI Studio Free Access: What's Still Free and What Isn't
AI Studio is still free for adults in supported countries, but since April 20, 2026, Gemini Pro and Nano Banana need Google AI Pro/Ultra or a paid API key.
12 min
API Pricing & Plans
ChatGPT Plus vs API: Is the API Cheaper Than $20 a Month?
Plus is $20 a month and the API is billed separately. Short, occasional chats cost less on the API; long daily threads, reasoning and Codex favor Plus.
11 min
API Pricing & Plans
Cheapest LLM API Provider: Where the Same Model Costs Less
No provider wins for every model. As of September 26, 2026, DeepSeek direct off-peak costs half of hosts charging its peak rate; check versions and router fees.
13 min
API Pricing & Plans
AI API Price Comparison: Cheapest Model by Input and Output Mix
As of September 26, 2026, GPT-6 Luna and DeepSeek Flash cost least per token. Among $2-input models, Grok 4.7 is cheapest; past 272K tokens, Sonnet 5 beats Sol.
15 min
Claude Code
Claude API vs Claude Code: Which One to Use and How You Pay
Same Claude models, different jobs: the API is per-token access for your own code; Claude Code is a coding agent that runs on Pro/Max or an API key.
13 min
API Pricing & Plans
Claude API vs OpenAI API Pricing: When Each One Costs Less
As of September 26, 2026, GPT-6 Sol matches Sonnet 5 and Astra matches Fable 5.1 on list price. Prompts over 272K favor Claude; Luna costs a tenth of Haiku 4.5.
11 min
API Pricing & Plans
DeepSeek API Peak Hours: Current Prices and When to Wait
DeepSeek doubles API rates from 01:00–04:00 and 06:00–10:00 UTC on weekdays. Flash was cut on September 10, 2026, so waiting saves less per batch.
8 min
API Guides
Best Free AI API Provider: Pick by Limits, Data Use, and Region
Start with Gemini's free tier unless your prompts are private or you're outside its regions; add Groq or OpenRouter for headroom. As of September 26, 2026.
16 min
AI Image Generation
Gemini Image Generation Guide: Pick the Right Tool and Model
As of September 2026, the free Gemini app runs Nano Banana 2 with no fixed image count, AI Mode allows 25 images a day, and every Gemini API image is billed.
16 min
AI Image Generation
Gemini Free Image Limit: How Many Images You Can Make and Upload
As of September 2026, Google prints no image count for the free Gemini app: usage refreshes every 5 hours up to a weekly cap. AI Mode allows 25 images a day.
13 min
API Guides
OpenAI Base URL Override: Which Setting Wins and What to Paste
In the official Python and Node SDKs, base_url beats OPENAI_BASE_URL and endpoint paths are appended to it, so paste the base ending in /v1, not an endpoint.
10 min
API Pricing & Plans
Grok API Pricing: Model Rates, Billing Rules, and Monthly Costs
As of September 26, 2026, grok-4.7 costs $2 input and $6 output per million tokens; grok-4.3 costs $1.25 and $2.50. No free API allowance is listed.
12 min
Troubleshooting
AWS Bedrock Claude 400 Error: Match the Exact Message to the Fix
A Claude 400 on Amazon Bedrock can be a stripped beta header, old Claude Code, full context, a bad model ID or an account setting. Fix it by the exact message.
15 min
API Pricing & Plans
Claude Fable 5.1 API Pricing: What Changed and What You'll Pay
Claude Fable 5.1 costs $10 per million input and $50 per million output tokens. Only cache reads got cheaper, $1 to $0.25, so savings track your cache use.
12 min
Model Comparisons
Claude Opus 5.5 vs GPT-6 Sol: When the 2x Price Premium Pays Off
GPT-6 Sol is the cheaper default for short-context work. Opus 5.5 scores higher, and its 2x price gap shrinks with cache reads and can flip above 272K input.
11 min
API Pricing & Plans
GPT Image 2.5 Sunburst Pricing: Official Costs vs $0.03 per Call
Compare GPT Image 2.5 Sunburst and Flare token costs with LaoZhang’s $0.03/call VIP option, including quality settings, editing charges, and monthly budgets.
10 min
AI Image Generation
GPT Image 2.5 in ComfyUI: Setup, Cost per Run, and Fixes
GPT Image 2.5 runs in ComfyUI 0.35.0+ as a Partner Node billed in Comfy credits, not an OpenAI key. A 1024×1024 image costs about $0.0084 at low quality.
14 min
AI Image Generation
GPT Image 2.5 in n8n: When the OpenAI Node Isn't Enough
n8n's OpenAI node runs GPT Image 2.5 up to high quality and 1536 px but drops token usage. For xhigh, 4K, transparency or URL replies, use HTTP Request.
12 min