AI image guides

Fixes, limits and model picks: the answers readers look up most.

18 guidesUpdated regularly

Gemini image prompt templates: a photorealistic template with bracketed slots to fill in, plus 7 generating and 7 editing strategies

图像生成Oct 1, 202610 min

Gemini Image Generation Prompts: 16 Templates to Copy and Adapt

Gemini image prompts work best as sentences: subject, setting, light, camera. Copy 16 templates for generating and editing, and see what prompts can't set.

Gemini image promptsNano Banana 2Nano Banana Pro

Guides still maintained

GPT Image 2 usage limits: 5 to 250 images per minute by API tier, a per-minute 429 that clears after waiting, and a credit or spend limit 429 that retrying will not fix

图像生成Oct 1, 202610 min

GPT Image 2 Usage Limits: API Tiers and What Each 429 Means

The OpenAI API allows gpt-image-2 5 to 250 images per minute, depending on usage tier. A 429 can also be a credit or spend limit that retrying will not clear.

ChatGPT file upload limits as of September 30, 2026: up to 80 files every 3 hours (Free: 3 a day), 512 MB per file, 5, 25, or 40 files per Project, and 500 MB to 100 GB of Library storage

AI工具指南Sep 30, 202610 min

ChatGPT File Upload Limits for Free, Go, Plus, Pro, and Business

As of September 30, 2026: up to 80 files every 3 hours (Free: 3 a day), 512 MB per file, 20 MB per image. Project and storage caps depend on your plan.

ChatGPT free plan image limit message with its reset countdown, beside cards showing that OpenAI publishes no free image count and third parties report about 2–3 images per 24 hours

AI工具指南Sep 30, 202610 min

How Many Images Can ChatGPT Generate for Free? Limits Explained

OpenAI publishes no free image count; third parties report about 2–3 a day as of September 30, 2026. What each limit message means and how to get more.

AI工具指南Sep 30, 202614 min

ChatGPT Image Upload Not Working or "Max 0 uploads at a time"

ChatGPT image uploads fail because of the file, an upload cap, a GPT or Project, the browser or network, or an outage. A small PNG in a new chat shows which.

Codex vs Claude Code: both start at $20 a month on ChatGPT Plus or Claude Pro, Codex also has Free and Go tiers, and each counts usage limits differently

AI工具指南Sep 30, 202611 min

Codex vs Claude Code: Differences, Pricing, and Which to Pick

As of September 30, 2026, both run locally and in the cloud from $20 a month; only Codex has free and $8 tiers. Pick by task, paid account, and safety.

Gemini API 400 FAILED_PRECONDITION error "User location is not supported for the API use", with region checked first and then billing, age 18+ and the key's project

API开发Sep 30, 202610 min

Fix Gemini API "User location is not supported for the API use"

This 400 FAILED_PRECONDITION means the Gemini API is not offered where your request comes from, or a billing or account prerequisite is missing.

Gemini API 429 cover showing the RESOURCE_EXHAUSTED response, per-minute RPM, TPM and IPM limits that clear within a minute, and RPD resetting at midnight Pacific time

API开发Sep 30, 202611 min

Gemini API 429 RESOURCE_EXHAUSTED: RPM, TPM, RPD and How to Fix

A Gemini API 429 means your project hit one limit: RPM, TPM, RPD, IPM or the 10-minute spend limit. Per-minute limits clear fast; RPD resets at midnight PT.

Gemini blocked your prompt: the input check and output check both return PROHIBITED_CONTENT, which no setting changes, while only SAFETY blocks follow your thresholds

API开发Sep 30, 202617 min

"The prompt could not be submitted" in Gemini: what was blocked

Gemini's "sensitive words" message is a content-policy block, not a quota or account issue. Which stage refused, whether settings help, finding the trigger.

AI工具指南Sep 30, 202612 min

Fix Gemini "Something went wrong (1185)" and connection errors

Gemini error 1185 usually sticks to one chat, not your network. Branch from the last good answer first; check status and sign-in only if every chat fails.

The Gemini web app message "Gemini isn't currently supported in your country. Stay tuned!" with two checks: find which of four country lists applies, then check age and account

AI工具指南Sep 30, 202610 min

Gemini Not Available in Your Region? Check the Right Country List

The Gemini web app, mobile app, Gemini in Chrome and the Gemini API each have their own country list. Check the one showing the error, then your account.

The AI Studio "Failed to create interaction: permission denied" error and its four reported causes, in the order to check them

API开发Sep 30, 202610 min

Failed to create interaction: permission denied in AI Studio

As of September 30, 2026, Google doesn't document this AI Studio error. Reports tie it to age verification, preview-model access, key permissions or outages.

Gemini API free tier limits: Gemini 3.5 Flash and 2.5 Pro are free of charge, Nano Banana Pro and Veo 3.1 are not, and RPM, TPM and RPD limits apply per model and project

API开发Sep 30, 202611 min

Gemini API Free Tier Limits: Free Models, Quotas, and 429 Fixes

As of September 30, 2026, Gemini Flash, Flash-Lite and 2.5 Pro models are free in the API, but image and video models are not. Limits apply per project.

GPT Image 2 4K sizes in the API: 3840x2160 landscape, 2160x3840 portrait, and the 8,294,400-pixel limit

图像生成Sep 30, 20269 min

GPT Image 2 4K: Supported Sizes, Size Rules, and API Requests

GPT Image 2 returns 4K through the API when you request 3840x2160 or 2160x3840. Any custom size must pass four rules. ChatGPT lists no output resolution.

GPT Image 2 cost per 1024×1024 image on the OpenAI API: $0.006 low, $0.053 medium, $0.211 high

图像生成Sep 30, 202610 min

GPT Image 2 Price Per Image: Official API Costs and Formula

As of September 30, 2026, OpenAI estimates a GPT Image 2 image at $0.005–$0.211 by size and quality. Input tokens and retries add to it; Batch halves it.

GPT Image 2 grainy or blurry: five layers to check in order, from compression and resizing to quality level, prompt detail, edit chain and model

图像生成Sep 30, 202611 min

GPT Image 2 Grainy or Blurry Images: Find the Cause and Fix It

Grain, blur and decay over repeated edits in GPT Image 2 come from different layers. Check compression, quality, prompt, edit chain and model, one at a time.

What is Nano Banana: Nano Banana 2 is the Gemini app default on every plan, Nano Banana Pro needs a paid Plus, Pro, or Ultra plan, and the Gemini API has no free tier for either

图像生成Sep 30, 20269 min

What Is Nano Banana? Gemini's Image Model and How to Use It

Nano Banana is Google's name for image generation in Gemini. As of September 30, 2026, Nano Banana 2 is the Gemini app default; Pro needs a paid plan.

Gemini image refusal classifier separating app refusal, API prompt block, model refusal, output safety, unsupported route, and account or rate branches

AI工具指南Jul 8, 202610 min read

Gemini Refusing Harmless Images? Diagnose the Block Before You Retry

Diagnose why Gemini refuses harmless-looking image prompts or uploads, separate app and API safety blocks, collect false-positive evidence, and retry only within policy.