Model APIs
Where Is ChatGPT Agent Mode? Legacy Location and ChatGPT Work
OpenAI lists the legacy Agent mode location, but says ChatGPT agent is no longer available. Find the documented ChatGPT Work entry point and what to check if it isn’t visible.
AI model and infrastructure insights
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Model comparisons
Claude Sonnet 4 vs. Gemini 2.5 Pro: API Status, Features & Cost
A production-focused comparison of Claude Sonnet 4 and Gemini 2.5 Pro, covering API lifecycle, documented capabilities, historical pricing, benchmark limits, and a practical validation checklist.
How-to guides
How to Use a Custom GPT in ChatGPT—and When to Use an API
Learn how to open a GPT, edit one if your account allows it, test changes, and distinguish a ChatGPT GPT from an API-based assistant. Includes OpenAI’s current GPT retirement notice.
Model comparisons
Gemini 3 vs Claude 4.5 for Coding: API Status and What the Evidence Shows
Gemini 3 Pro Preview and Claude Sonnet 4.5 are not a practical production API matchup now: Google shut Gemini 3 Pro Preview down on March 9, 2026, and Anthropic says Sonnet 4.5 retires November 30, 2026. Here’s what the coding evidence and API costs can—and can’t—tell you.
Pricing and plans
OpenAI o3 API Pricing: Rates, Budget Example, and Deprecation Status
OpenAI lists o3 API rates of $2 per million input tokens, $0.50 per million cached input tokens, and $8 per million output tokens. See a worked budget example that accounts for reasoning tokens and o3’s deprecated status.
Model APIs
Qwen for Coding: Which Model and API Should You Choose?
Compare Qwen coding models and workflows, see a provider-specific Model Studio API example, and learn what to verify before production.
Pricing and plans
Gemini 2.5 Flash Free Tier: API Access, Limits & Budgeting
Learn what to verify about Gemini 2.5 Flash API access, quotas, paid rates, and Google’s data-use and regional terms before budgeting or using it in production.
Model APIs
What Is ChatGPT Agent Mode? How It Worked—and What to Use Now
ChatGPT Agent mode was designed to complete multi-step tasks using tools, not just answer questions. OpenAI now says it is no longer available and points users to ChatGPT Work; learn how that differs from a production API agent.
Coding agents
n8n vs MCP: What’s the Difference, and When Should You Use Both?
n8n is workflow automation; MCP is a protocol for connecting AI applications to tools and systems. Compare their roles, see how model APIs fit, and choose n8n, MCP, or both.
Pricing and plans
Grok 4 Subscription Cost: Current Plans and API Pricing
Compare The X Subscription prices with Grok API costs, and see what xAI’s current plan and model descriptions do—and don’t—confirm about Grok 4 access.
Model APIs
GLM-4 Guide: Models, Specs, Pricing, and API Selection
Compare the documented GLM-4 models, their listed context and output limits, provider-stated capabilities, and separate BigModel and Z.AI API examples. Learn what to verify before production use.
Model APIs
ChatGPT Agent Release Date: Launch Timing and API Options
ChatGPT Agent was introduced on July 17, 2025. See the initial plan rollout, what that date establishes, and which OpenAI API developers can use to build a separate agent application.
Coding agents
OpenAI vs. ChatGPT vs. Copilot: What’s the Difference?
Understand how OpenAI, ChatGPT, and Microsoft Copilot differ for everyday assistance, Microsoft 365 work, and production API use—including licensing and data retention.
Pricing and plans
How to Generate AI Video Free: Google Flow and API Costs
Use Google Flow’s no-subscription daily credits to try AI video generation, check the cost before creating, and download your result. Learn how production API pricing differs.
Model comparisons
Google AI vs OpenAI: Which Production API Fits Your Workload?
Compare Gemini and OpenAI production APIs by documented capabilities, token pricing, data handling, and a practical evaluation plan.
Coding agents
Claude Code Opus 4: Availability, Coding Fit, and API Migration
Anthropic scheduled Claude Opus 4’s API retirement for June 15, 2026, a date that has passed. Here’s what is verified about Claude Code access, Opus 4’s historical coding results, and using a currently documented API model.
Video generation
Seedance Fast: Models, Capabilities, and API Access
“Seedance Fast” can refer to different model listings. Identify the exact variant, compare attributed capabilities, and see what Volcano Ark and Treza describe for API access.
Video generation
How Sora Works: The Video Model and Its Current Status
Learn how OpenAI’s Sora generated video, what its technical reports document, and why it is no longer available for new production use.
Model APIs
Grok 4 Heavy API: Is It Available, and How to Integrate Grok Safely
Grok 4 Heavy API availability is not confirmed by the documentation reviewed. Learn how to check the models available to your API key, make a documented request to an alternative model, and distinguish its pricing from Heavy pricing.
Video generation
What Is Sora Video Creation? Capabilities, Limits, and API Status
Sora video creation means generating video from prompts. Learn how documented Sora 2 capabilities differ by channel, and what Microsoft’s current Azure listings do—and do not—confirm about API availability.
Audio and speech
GPT-4o mini TTS voices: names, API use, and shutdown date
See which voices are documented for GPT-4o mini TTS, how to select coral in the Speech API, and what the scheduled January 6, 2027 shutdown means for production.
Pricing and plans
Is Agent Mode in ChatGPT Free? Current Access, Work Pricing, and API
The former ChatGPT Agent is no longer available. Learn how its successor, ChatGPT Work, differs, whether Free includes cloud-browser tasks, and what a paid plan costs.
Video generation
How to Use Veo 2: Shutdown Status and API Migration
Veo 2 is no longer available through Google’s documented API routes. Learn the shutdown context and set up Google Cloud authentication for the documented Veo 3.1 migration path.
Video generation
OpenAI Sora Video Examples: Prompts, Clips, and Production Fit
Explore Sora video examples—from woolly mammoths to a Big Sur coastline—with prompt excerpts and direct clip links. Current playback is unconfirmed; OpenAI discontinued the Sora app and web experience in April 2026 and the Sora API in September 2026.