🌐
Anthropic
anthropic.com › learn › build-with-claude
Anthropic Academy: Claude API Development Guide
Use our quickstart guide to make your first API call · Get started with Claude Code with npm install -g @anthropic-ai/claude-code
Discussions

A "Just use API" Guide
Beware of users hocking their own UI products. They like to respond personally to say this thing they found is the best, not revealing it is theirs until you grill them. I use LibreChat. It's okay. Very jittery when generating answers, but it works. Also does caching. Installing on Docker on a mac was not fun, but just a one time hassle. I've used AnythingLLM. It's much easier to install. IDK anything else about it. Apparently bigAGI is good. That name makes me cringe so I've never tried. Oh also you can generate a new API key whenever you want. If you think someone might have maybe possibly stolen yours just make a new one. It is very very easy. EDIT: Do not worry about the best front end. They all work. Use whatever random one you first think is ok. Keep an eye out on your Anthropic console to make sure your API key hasn't been stolen. More on reddit.com
🌐 r/ClaudeAI
116
287
December 16, 2024
Is there any good web gui for Anthropic API rather than using clauide.ai
https://librechat.ai/ Best self hosted project you will find and compatible with almost all APIs out there. Just use the docker version if you are familiar with docker. You can even host it on the network for all devices easily. More on reddit.com
🌐 r/Anthropic
35
12
July 1, 2024
Anthropic is giving free API credits for university students : ClaudeAI
🌐 r/ClaudeAI
API Rate Limit : Anthropic
Hi everyone! We successfully contacted support in April to get a rate limit increase, but now when we tried to contact again to get a higher rate... More on old.reddit.com
🌐 r/Anthropic
🌐
Claude
claude.com › platform › api
Claude Developer Platform | Claude
Use our API to create new user experiences, products, and ways to work with the most advanced AI models on the market.
🌐
OfficeChai
officechai.com › home › anthropic, google gain market share at openai’s expense in enterprise api llm usage: menlo ventures report
Anthropic, Google Gain Market Share At OpenAI's Expense In Enterprise API LLM Usage: Menlo Ventures Report
9 hours ago - New data from Menlo Ventures reveals a reshuffling of the enterprise LLM API market, with OpenAI’s dominance eroding significantly over the past two years. The venture firm’s latest report shows OpenAI’s market share plummeting from 50% in 2023 to 27% by 2025, marking a steep 23-percentage-point decline as competitors gain traction with enterprise customers. The biggest winner in this shift has been Anthropic, whose market share has surged from just 12% in 2023 to 40% in 2025.

American artificial intelligence corporation

Anthropic PBC is an American artificial intelligence (AI) company founded in 2021. It has developed a family of large language models (LLMs) named Claude. The company researches and develops AI to "study … Wikipedia
Factsheet
Company type Private
Founded 2021; 4 years ago (2021)
Factsheet
Company type Private
Founded 2021; 4 years ago (2021)
🌐
Anthropic
anthropic.com
Home \ Anthropic
At Anthropic, we build AI to serve humanity’s long-term well-being.
🌐
Anthropic Courses
anthropic.skilljar.com › claude-with-the-anthropic-api
Building with the Claude API - Anthropic Courses
This comprehensive video course teaches developers how to integrate Claude AI into applications using the Anthropic API. The curriculum covers fundamental API operations, advanced prompting techniques, tool integration, and architectural patterns for building AI-powered systems.
Find elsewhere
🌐
Anthropic
anthropic.com › news › expanded-legal-protections-api-improvements
Expanded legal protections and improvements to our API \ Anthropic
December 19, 2023 - We are introducing new, simplified Commercial Terms of Service with an expanded copyright indemnity, as well as an improved developer experience with our beta Messages API.
🌐
DeepSeek
api-docs.deepseek.com › anthropic api
Anthropic API | DeepSeek API Docs
import anthropic client = anthropic.Anthropic() message = client.messages.create( model="deepseek-chat", max_tokens=1000, system="You are a helpful assistant.", messages=[ { "role": "user", "content": [ { "type": "text", "text": "Hi, how are you?" } ] } ] ) print(message.content)
🌐
Social Intents
help.socialintents.com › social intents knowledge base › ai chatbots › how to find your anthropic claude api key
How to Find Your Anthropic Claude API Key - Social Intents Knowledge Base
September 28, 2025 - Tool-Integrated AI – Claude APIs can be combined with tools for reasoning, document summarization, and creative writing tasks · Anthropic provides developers and companies with a responsible AI platform focused on trust, usability, and performance, all available through one secure API key.
🌐
Obot
obot.ai › home › learning center › anthropic claude api: a practical guide
Anthropic Claude API: A Practical Guide | Obot AI
October 7, 2024 - This is part of a series of articles about Anthropic Claude ... The Claude API, developed by Anthropic, allows developers to integrate Claude’s advanced language models into their applications for a wide range of tasks, such as text generation, summarization, and conversational agents.
🌐
AWS
docs.aws.amazon.com › amazon bedrock › user guide › amazon bedrock foundation model information › inference request parameters and response fields for foundation models › anthropic claude models › anthropic claude messages api
Anthropic Claude Messages API - Amazon Bedrock
3 days ago - This topic shows how to use the Anthropic Claude messages API with the base inference operations (InvokeModel or InvokeModelWithResponseStream). However, we recommend that you use the Converse API to implement messages in your application. The Converse API provides a unified set of parameters that work across all models that support messages.
🌐
Reddit
reddit.com › r/claudeai › a "just use api" guide
r/ClaudeAI on Reddit: A "Just use API" Guide
December 16, 2024 -

Created the below guide that hopefully will assist those who are interested in trying it out - especially those who are frustrated with the paid Anthropic monthly subscription:

What is an API?

API stands for Application Programming Interface. It's a software intermediary that allows two applications to communicate with each other. Think of it as a messenger that takes your request to a provider and delivers the response back to you. In simpler terms, an API is a set of rules and specifications that allows different software applications to interact and share data, regardless of their underlying technologies.

How to Obtain an Anthropic API Key

Here's a detailed guide to getting your Anthropic API key:

  1. Create an Anthropic Account:

    • Go to the Anthropic website (console.anthropic.com) and sign up for an account or log in if you already have one.

  2. Access the API Keys Section:

    • Once you're logged into your account, navigate to your name/profile icon at the top right of your screen. Look for an option labeled "API Keys".

  3. Generate a New API Key:

    • Click on the button "+ Create Key".

    • You'll be prompted to give your key a name. Enter a name and click "Create Key."

  4. Copy and Secure Your API Key:

    • A long string will be displayed, which is your API key. Copy this key immediately and store it in a safe location. You will not be able to view it again, and you'll need to generate a new one if you lose it.

  5. Set up Billing:

    • I put daily limits on usage – just in case. I recommend you do the same.

Important notes:

  • Security: Treat your API key like a password. Do not share it publicly or embed it directly in your code (if applicable). Use secure methods to store and access it.

  • You can always disable your key and create new ones if you feel any have been compromised.

API Limits - Quick Definitions:

  • Rate (Requests Per Minute - RPM): How often you can send requests (Low to Higher).

  • Context (Max Input Tokens): How much the AI remembers (Smaller to Larger).

  • Output (Max Output Tokens): How long the AI's response can be (Shorter to Longer).

Anthropic Tiers:

  • Tier 1:

    • Very low rate limits (50 RPM).

    • Small per minute context input limit (40k-50K input tokens on 3.5 models). This is the real killer for single users.

    • Shorter responses/output (per min).

    • This tier will make you tear your wig off - avoid.

  • Tier 2

    • Higher rate limits (1000 RPM).

    • Moderate per minute context input limit (80k-100k input tokens on 3.5 models).

    • Longer responses/output (per min).

    • I recommend spending the $40 to get to this at least. The majority of users will probably use up their $40 within 3-6 months. Just a guess on my part FYI. Power users can gobble this up in no time, however.

  • Tier 3:

    • Higher rate limits (2000 RPM).

    • Large per minute context input limit (160k-200k input tokens on 3.5 models).

    • Longer responses/output (per min).

  • Tier 4:

    • Highest rate limits (4,000 RPM), which means it can handle more concurrent requests.

    • Very large per minute context input limit (up to 400k input tokens on all models).

    • Longer responses/output (per min).

    • Currently this is the only tier that allows for 3.5 Sonnet's max context window of 200k input tokens (check my hyper link above to see for yourself).

    • You'll need $400 currently to reach this tier.

WARNING - YOUR API CREDITS EXPIRE AFTER 12 MONTHS FROM PURCHASE.

Anthropic Current Models & Context:

  • Claude 3 Opus:

    • Has a max context window of 200k input tokens. 4K max output tokens.

    • Available on all tiers.

  • Claude 3.5 Sonnet:

    • Has a max context window of 200k input tokens. 8K max output tokens.

    • Available on all tiers.

  • Claude 3.5 Haiku:

    • Has a max context window of 200k input tokens. 8K max output tokens.

    • Available on all tiers.

Tier 4 Advantages for Multiple Users:

Tier 4's primary benefit is its high rate limits, allowing for a total of 400,000 input tokens per minute. This capacity means you could, for example, concurrently run multiple 200,000 input token context models at their maximum. This level of throughput is particularly important for applications that experience a high volume of requests.

Why Tier 4 Matters for High Traffic:

  • Handles Concurrent Requests: Tier 4 is designed to efficiently manage simultaneous requests from many users.

  • Prevents Overloads: Lower tiers can become overwhelmed with a large number of users submitting queries, causing slowdowns. Tier 4 prevents these bottlenecks, ensuring smooth operation.

  • Supports Sustained High Usage: Tier 4 is ideal for applications requiring consistent support for heavy request loads.

Tier 4 for the Single User:

As a single, "power" user, Tier 4 essentially removes all limitations on your usage.

To clarify - Tier 4 allows up to 400k input tokens of TOTAL context per minute. It does NOT allow for any particular model to extend its context input token window capability.

Platforms for Using Anthropic API Keys

Here are some popular platforms, categorized by their nature:

Free Platforms (just a sample of some I use):

  • Anthropic Console Workbench: The Anthropic website itself provides a Workbench where you can experiment with the API directly in your browser. This is a good place to start exploring.

  • TypingMind (Limited): Decent number of features for free - but ads are annoying. Check it out. Free is browser based only I believe.

  • ChatBox (Community Edition): The commercial product is also free and easy to install locally - however read the privacy policy and be sure you are good with it (I'm serious). They have a browser based one here (again, read privacy policy): Chatbox.

  • Msty (Limited): Good free feature set. Nice UI.

Paid Platforms (just a sample of some I use):

  • TypingMind (Full Featured/Lifetime purchase): Onetime payment (try to catch it on sale sub $100) and also has a local install option if you are tech savvy enough. The unique thing about this is that you can utilize things like "Canvas" across multiple API vendors (Anthropic for example).

  • 16x Prompt: I use this for coding heavily. Check it out.

  • Msty (Lifetime): I have not used this, but I have a friend who loves the additional features that the paid version brings.

Open-Source Platforms (just a sample of some I use):

  • Open WebUI: An open-source platform for building AI agents and workflows that supports various model providers, including Claude. Install with pinokio - far easier to get you set up on it if you are unfamiliar with Docker.

  • LibreChat (Advanced Setup): No pinokio installation method as of yet but another incredibly featured free open-sourced product that just released Agents as well. They also released a code interpreter feature that is not free - however if you have a need for something like this you'd understand why (sandboxed environment).

Plenty of vendor options out there I'm sure - just be sure your keys are stored securely and be sure to actually read the Privacy Policy with all of them (I can't stress this enough).

WARNING: This is NOT a thread for devs to blatantly promote their product. I am not associated with ANY of the above recommendations. I have contributed to the Open WebUI platform by creating some popular functions - but that is about it.

Hope this helps!

Edit: Modified some things. Removed my statement regarding my preference for keys not being stored in browsers - again, generally a non-issue for most. Unique issue just for me.

🌐
Anthropic
console.anthropic.com › docs › en › api › overview
API Overview - Claude Docs
The Claude API is a RESTful API at https://api.anthropic.com that provides programmatic access to Claude models.
🌐
Anthropic
anthropic.com › news › web-search-api
Introducing web search on the Anthropic API
May 7, 2025 - Claude can now search the web through the API, giving users access to real-time information with citations for building up-to-date AI applications. ... Update: You can now add the web fetch tool to your requests and Claude will fetch and analyze content from any webpage URL. September 10, 2025 · Today, we're introducing web search on the Anthropic API—a new tool that gives Claude access to current information from across the web.
🌐
Anthropic
anthropic.com › news › claude-opus-4-5
Introducing Claude Opus 4.5
1 month ago - Opus 4.5 is available today on our apps, our API, and on all three major cloud platforms. If you’re a developer, simply use claude-opus-4-5-20251101 via the Claude API.
🌐
Postman
postman.com › postman › anthropic-apis › overview
Anthropic APIs
Unify API design, testing, documentation, and monitoring in one platform. Build, collaborate, and innovate faster with seamless Git and gateway integrations.
🌐
Zuplo
zuplo.com › zuplo learning center - articles on api development and best practices › apis › anthropic claude api: the ultimate guide
Anthropic Claude API: The Ultimate Guide | Zuplo Learning Center
April 9, 2025 - For developers, the API excels by handling inputs of up to 200,000 tokens while maintaining coherent, multi-turn conversations. Claude combines powerful reasoning with built-in safeguards, reducing misinformation and bias—ideal for chatbots, content tools, or complex data analysis. Its ability to process vast text inputs while keeping context makes it perfect for tasks like document analysis and complex reasoning that challenge other AI systems. Anthropic's comprehensive documentation makes getting started straightforward.