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Puter
developer.puter.com › tutorials › free-unlimited-claude-35-sonnet-api
Free, Unlimited Claude API
1 month ago - This tutorial will show you how to use Puter.js to access Claude's advanced AI capabilities (such as Claude Sonnet 4.5, Claude Opus 4.5, Claude Haiku 4.5) for free, without any API keys, backend, or servers.
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Claude
claude.com › platform › api
Claude Developer Platform | Claude
Allow Claude to interact with hundreds of external tools and APIs so it can perform a wider range of tasks. ... Process large volumes of requests asynchronously and save 50% on costs. ... Let Claude store and consult information from a dedicated memory file. ... Automatically clear less relevant tool calls and results from the context window when approaching token limits. ... Connect Claude to any remote MCP server without writing client code.
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CometAPI
cometapi.com › how-to-get-claude-free-api
How to get Claude Free APIs? 3 Ways! - CometAPI - All AI Models in One API
July 8, 2025 - All Claude models, including the most advanced Opus 4, are accessible through the same API endpoint, with tiered pricing beginning at a free level and scaling according to consumption.
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GitHub
github.com › galaxyapi › claude-3
GitHub - galaxyapi/claude-3: Free Proxy to access Claude-3 API. Anthropic key not required 🔐. It uses OpenAI format api to easily integrate on any Openai supported frontend.
Free Proxy to access Claude-3 API. Anthropic key not required 🔐. It uses OpenAI format api to easily integrate on any Openai supported frontend. - galaxyapi/claude-3
Starred by 112 users
Forked by 8 users
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Apidog
apidog.com › blog › how-to-use-claude-api-key-for-free-in-2025
How to Use Claude API Key for Free in 2025
October 19, 2025 - For developers looking to experiment or integrate Claude into their projects without incurring additional costs in 2025, there are several ways to gain free access to an API key. This guide will walk you through three practical options to get started for free, complete with step-by-step instructions and sample code for each.
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Pickaxe
pickaxe.co › post › how-to-get-your-claude-api-key-a-step-by-step-guide
How to get your Claude API key: A step-by-step guide (2025) - Pickaxe Blog
To get a Claude API key, you must create an Anthropic account add securely generate your key within the Anthropic Console. The key is shown only once so store it safely. Claude’s API is pay-as-you-go, but you can start with free credits.
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Cursor IDE
cursor-ide.com › blog › free-claude-37-api-guide-2025-english
Complete Guide to Free Claude 3.7 API: Three Zero-Cost Methods (2025) - Cursor IDE 博客
April 4, 2025 - Developers requiring formal API integration, application developers needing batch calls, and global users seeking barrier-free Claude 3.7 access · Compared to the official API and other alternatives, laozhang.ai offers these unique advantages: Free Credits: New users receive $1 in free credits upon registration, sufficient for processing approximately 100,000 tokens · No Regional Restrictions: Accessible from any global location without restriction · Official API Compatibility: Fully compatible with Anthropic's official API format, requiring no code modifications
Find elsewhere
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Apidog
apidog.com › blog › use-claude-code-free
A Proven Way to Use Claude Code for Free
August 27, 2025 - And the Claude Code is now ready to use for free. Invalid API Key: Double-check your environment variables.
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AI Free API
aifreeapi.com › en › posts › claude-code-free-tier
Claude Code Free Tier: Complete Guide to Free Access in 2025 | AI Free API
July 5, 2025 - For casual use: Leverage Claude.ai's free tier or Trae AI · For regular use: Subscribe to GitHub Copilot Pro to access Claude 3.7 Sonnet · For teams: Consider Copilot Business or LaoZhang.ai's discounted API · For specialized needs: Use LaoZhang.ai API gateway for the most cost-effective programmatic access · While Anthropic's official Claude Code offering provides the most integrated terminal experience, the alternative methods discussed in this guide offer substantial cost savings with comparable functionality for most development tasks.
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Apidog
apidog.com › blog › claude-code-free
Claude Code for Free? 20M Free Daily Tokens? Atlassian's Rovo Dev Review
June 20, 2025 - It's a Subsidized Beta: Atlassian is likely footing a massive bill for the underlying Claude API calls. They are subsidizing this cost to attract a large number of developers to beta test their new agent.
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Zapier
zapier.com › productivity › app tips
Claude API: How to get a key and use the API
July 8, 2024 - ... When creating a new developer account, you can get $5 free to play around with when you verify your account with a phone number. This credit is consumed every time you use the Workbench—the tool to try out new prompts—as well as any ...
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Nightfall AI
nightfall.ai › ai-security-101 › anthropic-claude-api-key
Anthropic Claude API Key: The Essential Guide | Nightfall AI Security 101
An Anthropic Claude API key is ... of tasks, such as text generation, translation, and code generation. Anthropic Claude API keys are free to obtain, but they are subject to a variety of restrictions....
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GitHub
github.com › inmve › free-ai-coding
GitHub - inmve/free-ai-coding: AI coding tools that give free Claude Opus/Sonnet, GPT-5, Gemini Pro, and other pro-grade models
Ultra ($200/mo): 20x usage on all OpenAI, Claude, Gemini models + Priority access to new features · Teams ($40/user/mo): Pro features + Centralized billing + Usage analytics + SAML/OIDC SSO · Enterprise (Custom): Everything in Teams + Pooled usage + SCIM + AI code tracking API + Audit logs · GPT-5.1-Codex-Max free for all users until Dec 11, 2025 (77.9% SWE-bench Verified)
Starred by 345 users
Forked by 52 users
Languages   JavaScript
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16x Eval
eval.16x.engineer › blog › claude-vs-claude-api-vs-claude-code
Claude, Claude API, and Claude Code: What's the Difference?
As outlined on their official pricing page, there is a free tier for basic use, a Pro plan for individuals, and Max plans for those who need more usage. These subscriptions provide access to more powerful models and features directly through ...
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Reddit
reddit.com › r/claudeai › claude code with api key?
r/ClaudeAI on Reddit: Claude Code with API key?
April 11, 2025 -

I'm a bit confused about how claude code work for payment. I've been logging in with my personal account and paying for credits but now I have an API key from my employer which I'd like to use. I also have a Claude Desktop subscription from my employer, but when I log in with that for Claude Code I'm still prompted to pay for my own credits and I don't see how to enter my API key.

I must be misunderstanding something - does anyone have any tips?

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Anthropic
docs.anthropic.com › en › docs › claude-code › overview
Claude Code overview - Claude Code Docs
Unix philosophy: Claude Code is composable and scriptable. tail -f app.log | claude -p "Slack me if you see any anomalies appear in this log stream" works. Your CI can run claude -p "If there are new text strings, translate them into French and raise a PR for @lang-fr-team to review". Enterprise-ready: Use the Claude API, or host on AWS or GCP.
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GitHub
github.com › codingworkflow › claude-code-api
GitHub - codingworkflow/claude-code-api
A simple, focused OpenAI-compatible API gateway for Claude Code with streaming support. Leverage the Claude Code SDK use mode.
Starred by 214 users
Forked by 29 users
Languages   Python 98.3% | Makefile 1.4% | Shell 0.3%