Every time a new AI model is released by Anthropic, Google Gemini, OpenAI, or others, many developers find themselves rushing to understand the specifications and features in order to integrate them into their services.

This article consolidates links to official documentation and reference articles from each provider in one place. Use it as a bookmark to streamline your initial investigation when new models are released, whether for feature development or internal documentation.

Tips: How to Have AI Read URL Content

Recent AI tools are remarkably capable of summarizing and analyzing content just by providing a URL. However, depending on the model or website, security policies or technical limitations may prevent direct access to external URLs.

In such cases, saving the target web page as a PDF using your browser’s print function and then providing that file as context to the AI is an effective workaround. While it requires an extra step, it ensures you’re working with accurate information.

Below are the key links for each provider’s models.

Anthropic (Claude)

All Models

• Pricing Page: API pricing organized by model.

Claude 4.5 Opus

• Release Blog Post: Official announcement for the Claude 4.5 Opus release.
• New Features Documentation: Technical documentation on specific changes and new features.

Google (Gemini)

All Models

• Pricing Page: Gemini API pricing structure.

Gemini 3 Flash

• API Documentation: Official guide on technical specifications and usage for models including Gemini 3 Flash.
• Release Blog Post (Google Blog): Announcement article introducing the model’s overview and features.
• Release Blog Post (Google Cloud Blog): Detailed article focused on enterprise use cases.

OpenAI (GPT)

All Models

• Model List: Overview of all available models with links to documentation.
• Pricing Page: API pricing for each model.

GPT-5.2

• Model Documentation: Detailed documentation on GPT-5.2 specifications and usage.
• Release Blog Post: Official announcement for the GPT-5.2 release.

I hope this information helps you quickly gather information and improve your development efficiency.

That’s all from the Gemba—a summary of official documentation and reference articles for major AI models from Anthropic, Google, and OpenAI.

References

• Anthropic
  • https://claude.com/pricing#api
  • https://www.anthropic.com/news/claude-opus-4-5
  • https://platform.claude.com/docs/en/about-claude/models/whats-new-claude-4-5
• Google
  • https://ai.google.dev/gemini-api/docs/pricing?hl=en
  • https://ai.google.dev/gemini-api/docs/gemini-3?hl=en
  • https://blog.google/products/gemini/gemini-3-flash/
  • https://cloud.google.com/blog/en/products/ai-machine-learning/gemini-3-flash-for-enterprises?hl=en
• OpenAI
  • https://platform.openai.com/docs/models
  • https://platform.openai.com/docs/pricing
  • https://platform.openai.com/docs/models/gpt-5.2
  • https://openai.com/index/introducing-gpt-5-2/