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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

562 articles
6 languages
12 topics
Updated Oct 31, 2026

Route board for free image-to-video AI showing recurring credits, daily generations, quality trials, editor workflow, phone use, and watermark-limited routes

LatestAI Video Generation

Best Free Image-to-Video AI in 2026: What Is Actually Free?

As of October 10, 2026, Google Flow, PixVerse, Firefly and Canva still give free image-to-video that resets. Runway is a one-time trial; Pika is packs only.

Oct 31, 202619 min

Grok free limit overview: free Chat and Voice have an unpublished limit with their own reset, paid plans share a weekly pool, and Settings → Usage is the first check; video, Expert, and Grok Bot are paid-only and the xAI API has no free tier

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.

Oct 31, 202614 min

Grok Imagine Video route board comparing the official app, xAI API, and third-party wrapper checks.

AI Video Generation

Does Grok AI Generate Videos? Grok Imagine Routes, Limits, and API Facts

A current answer to whether Grok AI makes videos, with the official workflow map and a safe app, API, or wrapper route for a first clip.

Oct 31, 202616 min

Grok API pricing cover: grok-4.7 at $2.00 input and $6.00 output per million tokens, grok-4.3 at $1.25 and $2.50, grok-build-0.1 at $1.00 and $2.00, with prompts of 200K or more billed at 2x and no free API allowance

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.

Oct 31, 202612 min

Diagram of the ChatGPT image editor panel with Markup, Comment, Remove BG, Erase and Resize, where each edit returns a new image

AI Image Generation

ChatGPT Image Editor: How to Use Each Tool and What It Redraws

ChatGPT's image editor is the panel behind the Edit button. Its tools, from Remove BG to Resize, send a prompt and redraw the whole image, not one spot.

Oct 30, 202612 min

Guide to the 2026 ChatGPT student offer covering eligibility, verification, billing, and renewal

ChatGPT & OpenAI

ChatGPT Student Discount 2026: Who Gets 4 Free Months of Plus

Eligible U.S. college students get four free months of ChatGPT Plus, then $20 a month. It includes GPT-6 Astra in ChatGPT Work and Codex, but not ChatGPT Pro.

Oct 30, 20269 min

Claude Batch API or prompt caching: a 10,000-request Sonnet 5.5 job costs $50.50 as a batch without caching, $44.00 with cached standard calls and $22.72 as a batch with 98% cache hits

API Guides

Claude Batch API Pricing: When 50% Off Beats Prompt Caching

The Claude Batch API halves every token price for jobs that can wait up to 24 hours, but on a big shared prompt, cached standard calls can still cost less.

Oct 30, 202617 min

Claude Code

Claude Code 403 "Your Account Can't Receive Replies": Next Step

It's an Anthropic identity check, not a bug; retries won't clear it. Verify at portal.anthropic.com if you're in a supported country with a physical photo ID.

Oct 30, 202610 min

Claude Code

Claude Code Cache TTL and Token Usage: Why Cache Misses Get Expensive and How to Prove It

Claude Code cache TTL is route-specific. Check the active route, TTL, cache creation tokens, cache read tokens, invalidators, and billing proof before blaming a bug.

Oct 30, 202613 min

Claude prompt caching: cache reads at 0.05x input on Opus and Sonnet 5.5, a 5-minute or 1-hour lifetime and a 512-token minimum prefix

API Guides

Claude Prompt Caching: How It Works, Costs, 512-Token Minimum

Mark a stable prefix with cache_control and Claude reuses it for 5 minutes or 1 hour. Reads cost 0.05x input on Opus and Sonnet 5.5; prefixes need 512+ tokens.

Oct 30, 202619 min

Claude structured output: a JSON schema in output_config.format returns a JSON string in the text block, followed by a stop_reason check and local validation with Pydantic or Zod

API Guides

Claude Structured Output: JSON Schema Guide and What Still Fails

Put a JSON schema in output_config.format and Claude returns matching JSON in the text block. Still check stop_reason and validate ranges and lengths yourself.

Oct 30, 202612 min

The Claude tool-use limit for this turn banner with its Continue button, beside cards showing one reply's tool calls ran out and no reset time is shown

Troubleshooting

Claude Reached Its Tool-Use Limit for This Turn: What to Do

One Claude reply ran out of tool calls; it isn't your 5-hour or weekly limit. Click Continue, then check what actually ran before trusting the summary.

Oct 30, 202610 min

Two Codex Browser disabled messages compared: the in-chat Work settings message fixed by a full quit and new chat, and the Settings → Browser message traced through the log reason

Troubleshooting

Codex Browser Disabled Even When Enabled: 2 Messages, 2 Fixes

Browser on but Codex says it is disabled? Fully quit and reopen the ChatGPT app, continue in a new chat, then check Work preferences → Local browser use.

Oct 30, 202614 min

DeepSeek Search API pricing: $0.00075 per successful request, about $0.002 per Claude Code search on deepseek-flash, and agent search billing from October 31, 16:00 UTC

API Pricing & Plans

DeepSeek Search API Pricing: $0.75/1K and Real Cost per Search

DeepSeek Search and Fetch: $0.75 per 1,000 successful requests, empty results free. Claude Code and Codex searches are billed from Oct 31, 2026, 16:00 UTC.

Oct 30, 202614 min

Gemini 4 Carbon vs Argon: Carbon's lead ranges from +14.9 on FrontierCode 2.0 to +0.3 on AutomationBench-AA

Model Comparisons

Gemini 4 Carbon vs Gemini 4 Argon: Slower Start, Faster Agents

Gemini 4 Carbon beats Argon 59.4 to 50.4 on AA's index but ties on SaaS automation. It's twice as slow to start a reply, yet finishes coding-agent tasks faster.

Oct 30, 202615 min

Gemini API error troubleshooting: deciding whether a 429 RESOURCE_EXHAUSTED should be retried or fixed

API Guides

Gemini API Error Troubleshooting: 429 RESOURCE_EXHAUSTED, 400/500

A Gemini 429 RESOURCE_EXHAUSTED can be a per-minute limit, a daily quota, a spend cap or no quota for the model. The error body says whether to retry or stop.

Oct 30, 202617 min

Gemini context caching overview: Gemini 4 Argon is implicit-only at 95% off cached input, a 3.8 Flash explicit cache beats no cache at 2 or more requests an hour, and 13 of 40 test calls hit

API Guides

Gemini Context Caching: Implicit vs Explicit, Pricing, Hit Rates

Gemini 4 Argon caches only implicitly, at 95% off. A one-hour explicit cache on 3.8 Flash beats no cache from the 2nd request. Implicit hits aren't guaranteed.

Oct 30, 202619 min

Claude Code

GLM-5.3-Flash in Claude Code: Setup That Actually Runs Flash

Point Claude Code at Z.ai's Coding Plan endpoint and put glm-5.3-flash[1m] in the Opus slot, which runs the main session. Effort defaults to high, not max.

Oct 30, 202616 min

Grok image to video by plan: Free has no video, Plus at $8 a month makes images only, Premium at $30 and up includes video, and the xAI API starts at $0.12 per 6-second clip

AI Video Generation

Grok Image to Video: How to Animate a Photo (Premium $30 and Up)

Grok animates a photo into a 6–15 s clip on Premium ($30) and up, not on Free or the $8 Plus. Start at 480p, 6 s; the API costs from $0.12 a clip.

Oct 30, 202614 min

Codex Usage dashboard with separate five-hour and weekly windows plus wait, reset, credits, and API paths

Developer Tools & Agents

Codex Weekly Limit Reset: Find Your Time or Reset Now

Codex has no fixed reset day. Tibo's 28-day campaign has brought four global resets as of October 20, 2026; Settings → Usage shows whether one reached you.

Oct 30, 202622 min

OpenAI versus Claude cache pricing board showing cached input, cache writes, cache reads, TTL, and usage field verification

API Guides

OpenAI vs Claude Cache Pricing: How Cached Tokens, Cache Writes, and Cache Reads Are Billed

OpenAI cache hits are cached input tokens, and GPT-5.6+ also bills cache writes; Claude separates cache writes and reads. Use this dated guide to audit repeated-context API and agent bills.

Oct 30, 202615 min

Qwen Image 3.0 in ComfyUI: a Partner Node sends each job through Comfy's API to Alibaba's servers, no GPU or model file needed

AI Image Generation

Qwen Image 3.0 in ComfyUI: No Download, Setup, and Cost per Image

There are no Qwen Image 3.0 weights to download. ComfyUI runs it through two paid Partner Nodes: $0.0429 per standard image, Pro $0.0572 or $0.10725 by size.

Oct 30, 202617 min

GPT-6.1 Terra not in Codex: CC Switch Routing returns an empty list, the bundled list has Terra from 0.165.0, and Direct mode lists it

Troubleshooting

GPT-6.1 Terra Not Showing in Codex With CC Switch: Fix by Mode

In CC Switch Routing mode, Codex gets an empty model list and shows its bundled one, which has GPT-6.1 Terra only from 0.165.0. Go back to Direct and restart.

Oct 29, 202612 min

Gemini 4 Carbon status on October 29, 2026: rolling out to Fairwind cyber defenders only, not yet in the Gemini API, AI Studio, Gemini app, Vertex AI or Antigravity

API Pricing & Plans

Gemini 4 Carbon Release Date: Cyber Defenders Only for Now

Google announced Gemini 4 Carbon on October 28, 2026, but only Fairwind cyber defenders can use it. No public API or app date yet; build on Argon meanwhile.

Oct 29, 202611 min