● Live & Ready — Now with AI Agent

The AI Backend for OpenClaw — and Everything Else

One API key. 23+ models including Claude, GPT-4o, and Gemini. Built-in agent that searches the web and solves multi-step tasks. The fastest way to go from idea to working AI app.

🔥 Launch Sale: Up to 50% off all paid tiers — limited time only

DeepSeek V3 Llama 3.3 Qwen3 GPT-OSS Gemma + 18 more Claude Sonnet GPT-4o Gemini 2.0

What Developers Are Saying

Real feedback from people building with NiceGuyAPI.

"I switched from managing 4 different API keys to just NiceGuyAPI. Set up with OpenClaw in under 10 minutes."

— Marcus R., indie developer

"The agent mode is a game-changer. It searches the web, reads pages, and summarizes everything automatically. Saved me hours."

— Sarah T., startup founder

"Finally an API that doesn't make me choose between models. I test on DeepSeek, ship on Claude, all through one key."

— James K., full-stack developer

Get Your Free API Key — 30 Seconds

100 requests/month, no credit card. Instant access to 23+ AI models.

Your API Key

This key is saved to your browser. Check email for a backup link.

Saved! Your key works immediately. Enjoy your free 100 requests this month.

No API key needed to try the chat. No credit card ever.

Who Is This For?

Whether you are a developer, creator, or just curious — there is something here for you.

🤖

AI Agent

Autonomous agent that searches the web, reads webpages, and solves multi-step tasks. Give it a goal — it figures out the steps. Like having a research assistant that never sleeps.

✓ Builder & Developer

🧠

Chat Assistant

Ask questions, get explanations, brainstorm ideas, or just have a conversation. Like talking to a genius friend who never sleeps.

✓ Hobbyist tier

✍️

Content Creator

Write blog posts, social media captions, emails, product descriptions, and more. Pick the AI that matches your voice best.

✓ Hobbyist tier

💻

Coding Assistant

Get help with code, debug errors, build apps, or learn programming. Developer tier unlocks Claude and GPT-4o — the best coding AIs.

★ Developer tier

🎨

Image Generation

Create custom images, graphics, logos, or artwork. Just describe what you want and the AI generates it.

✓ Builder & Developer

🎵

Song Generation

Generate music, jingles, beats, or full songs. Perfect for content creators who need original audio.

✓ Builder & Developer

🏗️

Build Apps & Games

Create custom apps, games, and websites with AI assistance. Developer tier includes hosting so you can share them with the world.

★ Developer only

🔌

OpenClaw Integration

Use NiceGuyAPI as the AI backend for OpenClaw — a free, open-source AI assistant you control. Full setup guide included.

✓ All tiers

🔬

Research & Learning

Explore any topic, get summaries of complex subjects, or study for exams. Access to multiple models means different perspectives.

✓ Hobbyist tier

💼

Business Automation

Process data, generate reports, draft proposals, analyze feedback — automate repetitive knowledge work with a single API.

★ Developer tier

Why NiceGuyAPI?

One key. One endpoint. Every AI model you will ever need.

🤖

Built-in AI Agent

Agent mode with web search, web fetch, and calculator tools. The AI autonomously plans and executes multi-step tasks. Builder & Developer.

🔑

One Key, All Models

No need to sign up for 5 different services. One API key gives you access to 23+ models from DeepSeek, Claude, GPT, Gemini and more.

🔌

OpenAI Compatible

Drop-in replacement for OpenAI's API. If your code already uses OpenAI, switch to NiceGuyAPI by changing the base URL and key. Done.

🆓

Genuinely Free Tier

100 free requests per month — no credit card, no expiry. Enough to build a working prototype before you spend a cent.

💰

Pricing That Makes Sense

Builder at $9/mo for 500 requests. Developer at $29/mo for 2,500. Studio at $79/mo for 10,000 with 750K context.

⚡

Fast Responses

🔒

Secure by Default

API keys are bcrypt-hashed. HTTPS everywhere. Rate limiting protects your account. No data stored beyond usage counts.

Why Not Just Use OpenAI Directly?

See how NiceGuyAPI compares to signing up for each provider individually.

Feature	OpenAI Direct	Anthropic Direct	⚡ NiceGuyAPI + OpenClaw
API Keys to Manage	1	1	1 (all models)
Models Available	GPT only	Claude only	23+ models
Separate Billing	$20+/mo	$20+/mo	From $0
Free Tier	✗ Limited	✗ None	100 req/mo, no CC
Agent Mode (web search)	✗ Extra cost	✗ Extra cost	Included Pro+
Context Window	128K	200K	Up to 750K
Switch Models in Code	Different API	Different API	Change one string
OpenClaw Integration	✗ Manual setup	✗ Manual setup	✓ One command

Simple, Honest Pricing

Start free. Upgrade only when you need more. Cancel anytime.

Hobbyist

Perfect for personal projects and curiosity

$0/mo

100 requests/mo (~3 conversations a day)
23+ free AI models
Rate limit: 5 req/min
Save chat history
Perfect for trying it out

Current Plan

Builder

LAUNCH SALE

For makers shipping their first AI project

$18$9/mo

500 requests/mo (enough to build and ship)
23+ free AI models
Rate limit: 20 req/min
Image generation
Song generation
🤖 Agent mode — web search & fetch
Conversation memory (6 turns)
145K context window

Developer

LAUNCH SALE

For developers integrating AI into real apps

$59$29/mo

🔥 2,500 requests/mo (production-ready volume)
ALL models including Claude, GPT-4o, Gemini
Rate limit: 60 req/min
🤖 Full Agent — search, fetch, calculate
Extended agent memory
Image + song generation
App, game & website creation
Hosting included
315K context window

Studio

LAUNCH SALE

Run an AI-powered business without hitting limits

$159$79/mo

☆ 10,000 requests/mo (scale as you grow)
All Premium features included
Rate limit: 120 req/min
🤖 Full Agent with all tools
Massive agent memory
Custom agent creation (999)
Image + song + game + app generation
Priority routing
750K context window

How It Works

Three steps from zero to chatting with AI.

Get Your Key

Enter your email, pick a plan, and get an instant API key. No credit card for Hobbyist tier.

Make a Request

Send one simple HTTP request. Pick any model — DeepSeek, Claude, GPT-4o, Gemini — they all work the same way.

Get a Response

Get back a standard OpenAI-format response. Use it in OpenClaw, your app, your website — anywhere.

See How Simple It Is

One request. Any model. Here is a cURL example:

# Ask anything to any AI model
curl https://niceguyapi-repo.vercel.app/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: nga_live_..." \
  -d '{
    "model": "deepseek/deepseek-v3-0324:free",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

# Works with Python too:
import requests
res = requests.post(
    "https://niceguyapi-repo.vercel.app/v1/chat/completions",
    headers={"X-API-Key": "nga_live_..."},
    json={"model": "anthropic/claude-sonnet-4-20250514",
          "messages": [{"role": "user", "content": "Hello!"}]}
)

📖 Full setup guide with OpenClaw integration →

🤖 AI Agent — Do More Than Chat

Builder & Developer tiers include an autonomous agent that searches the web, reads pages, and solves multi-step tasks.

🔍

Web Search

Agent searches the web in real-time for current events, prices, facts, and news. No stale training data.

🌐

Web Fetch

Agent reads any webpage and extracts the key information. Paste a URL and get a summary instantly.

🧮

Calculator

Safely evaluates math expressions. No more "AI got the math wrong" — it uses a real calculator.

🧠

Multi-Step Reasoning

Agent chains multiple tool calls together. Search → fetch → analyze → summarize, all in one request.

💾

Conversation Memory

Agent remembers your last 6 exchanges. Ask follow-ups naturally without repeating context.

⚡

One API Call

All agent complexity is hidden behind one simple API request. Just add "agent": true to your chat call.

# Agent mode — one parameter unlocks everything
curl https://niceguyapi-repo.vercel.app/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: nga_live_YOUR_KEY" \
  -d '{
    "agent": true,
    "model": "openai/gpt-oss-120b:free",
    "messages": [{"role": "user", "content": "Find today\'s top AI news and summarize it"}]
  }'

Try It Right Now

Chat with AI directly on this page. No signup needed.

● Live Demo

Try the AI Chat

Enter your email to get a temporary free key and start chatting. Your messages are linked to your account.

AI Chat Free 0/102 🤖 Agent

Getting Started Guide

Everything you need to start using NiceGuyAPI, even if you have never used an API before.

1Get Your API Key (30 seconds)

Go to the Home tab and enter your email. Select "Free" and click "Get Key." Your key will appear on screen and be saved to your browser.

💡 Your key starts with nga_live_ or nga_test_. Copy it and keep it safe — it is your password.

2Try It in Your Browser (1 minute — no code!)

You can test your API key right now without writing any code. Just paste this URL into your browser (replace YOUR_KEY with your key):

https://niceguyapi-repo.vercel.app/v1/models?key=YOUR_KEY

This will show you all the AI models available on your plan. If you see a list of models — your key works!

💡 No code editor? No problem. You can use curl from any terminal, or use a free tool like ReqBin (reqbin.com) to test APIs from your browser.

3Use It with cURL (Terminal)

Open your computer's terminal (Command Prompt on Windows, Terminal on Mac/Linux) and paste this:

curl https://niceguyapi-repo.vercel.app/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: nga_live_YOUR_KEY" \
  -d '{"model":"deepseek/deepseek-v3-0324:free","messages":[{"role":"user","content":"Say hello!"}]}'

You should get a JSON response with "Hello!" from the AI. If you do — everything is working perfectly.

4Use It with Python

Install Python from python.org if you do not have it. Then run:

pip install requests

Then create a file called chat.py with this content:

import requests

API_KEY = "nga_live_YOUR_KEY"
BASE_URL = "https://niceguyapi-repo.vercel.app"

while True:
    msg = input("You: ")
    if msg.lower() == "quit":
        break
    res = requests.post(f"{BASE_URL}/v1/chat/completions",
        headers={"X-API-Key": API_KEY},
        json={"model": "deepseek/deepseek-v3-0324:free",
              "messages": [{"role": "user", "content": msg}]})
    data = res.json()
    print("AI:", data["choices"][0]["message"]["content"])

Run it with: python chat.py

5Use It with OpenClaw (Advanced)

OpenClaw is a free, open-source AI assistant platform you self-host. NiceGuyAPI works as the AI model provider.

Step 1: Install OpenClaw from docs.openclaw.ai

# Install OpenClaw (requires Node.js)
npm install -g openclaw

# Set your NiceGuyAPI key as the model provider
openclaw config set model.baseUrl https://niceguyapi-repo.vercel.app/v1
openclaw config set model.apiKey nga_live_YOUR_KEY
openclaw config set model.name deepseek/deepseek-v3-0324:free

# Start OpenClaw
openclaw start

Step 2: OpenClaw will now use NiceGuyAPI for all AI requests. You can change the model in the config to any model available on your tier.

💡 Pro and Premium users can set the model to anthropic/claude-sonnet-4-20250514 or openai/gpt-4o for the best experience.

⚠️ Keep your API key secret. Never share it or post it publicly. If someone steals it, they use your request quota.

6Manage Your Usage

Check how many requests you have left:

curl https://niceguyapi-repo.vercel.app/v1/usage \
  -H "X-API-Key: nga_live_YOUR_KEY"

This returns your current usage, monthly limit, tier info, and available models.

7Use Agent Mode (Builder & Developer)

Agent mode turns the AI into an autonomous assistant that can search the web, read webpages, and do calculations. Perfect for research, current events, and multi-step tasks.

# Enable agent mode with one parameter
curl https://niceguyapi-repo.vercel.app/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-API-Key: nga_live_YOUR_KEY" \
  -d '{
    "model": "openai/gpt-oss-120b:free",
    "agent": true,
    "messages": [{"role": "user", "content": "What happened in AI news today? Summarize the top 3 stories."}]
  }'

# The agent will:
# 1. Search the web for "AI news today"
# 2. Fetch the top result pages
# 3. Synthesize a summary

You can also use the POST /v1/agent endpoint directly for explicit agent calls.

💡 Agent mode works best with GPT-OSS 120B or higher models. Each agent request counts as 1 API call but may use up to 5 internal LLM round-trips.

8Pick the Right Model

Different models are better at different tasks:

Free Tier Models (no credit card — 23+ models):
  • deepseek/deepseek-v3-0324:free — Best all-around
  • meta-llama/llama-3.3-70b-instruct:free — Great for reasoning
  • qwen/qwen3-coder:free — Best for coding

Premium Models (requires Developer plan — top-tier AI):
  • anthropic/claude-sonnet-4-20250514 — Best overall AI
  • openai/gpt-4o — Great for creative tasks
  • google/gemini-2.0-flash — Fast and capable

💡 Start with deepseek/deepseek-v3-0324:free. It is fast, smart, and free. Switch models if you need something specific.

Frequently Asked Questions

Everything you need to know before getting started.

What is NiceGuyAPI?▼

NiceGuyAPI is an AI model gateway. It gives you one API key that works with 23+ AI models — including DeepSeek, Claude, GPT-4o, Gemini, and more. Builder and Developer tiers also include an autonomous AI Agent that can search the web, read webpages, and perform multi-step tasks.

Do I need to know how to code?▼

You need basic computer skills to use the API directly (we provide step-by-step instructions). But you can also use the Try Chat tab on this page to talk to AI without any coding at all. Just enter your email and start chatting.

What does "100 requests per month" mean?▼

Each time you send a message to the AI, that is one request. The Hobbyist plan gives you 100 messages per month — enough to build a small project, test every model, and decide if NiceGuyAPI fits your workflow. For more, Builder gives 500 requests and Developer gives 2,500 per month.

What is the AI Agent? How does it work?▼

The AI Agent is an autonomous mode (Builder and Developer) that goes beyond simple chat. When you enable Agent mode, the AI can search the web for real-time information, fetch and read webpages, and perform calculations — all autonomously. You give it a goal, it figures out the steps. For example: "Find the latest news about AI and summarize it" — the agent searches, reads, and synthesizes automatically. It uses up to 5 LLM round-trips per request to plan and execute.

Why does Developer have 2,500 requests?▼

Developer is built for developers and power users who integrate the API into apps, tools, and workflows. At 2,500 requests per month for $29, you get outstanding value — plus access to Claude, GPT-4o, Gemini, full Agent capabilities, and creation tools (images, songs, apps, games, and hosting).

What is OpenClaw and how do I use it?▼

OpenClaw is a free, open-source AI assistant platform. You install it on your computer and it connects to AI models — like NiceGuyAPI. Think of it as your personal AI assistant that you fully control. Our setup guide walks you through the entire process step by step.

Can I change plans later?▼

Yes! Upgrade or downgrade anytime. When you upgrade, your new request limit kicks in immediately. Payments are handled securely through Stripe.

What happens when I run out of requests?▼

You will get a friendly error message when you hit your limit. You can either wait until your next billing cycle (resets monthly), or upgrade to a higher tier. Need no limits at all? Studio gives you 10,000 requests.

What payment methods do you accept?▼

We accept all major credit and debit cards through Stripe. Payments are secure and automatic — cancel anytime with no penalties.

What are the context window sizes for each tier?▼

Context window is how much text the AI can remember in a conversation. Hobbyist gets 75K, Builder gets 145K, Developer gets 315K, and Studio gets a massive 750K context window — enough to process entire books, large codebases, or lengthy documents in a single conversation.

What is Studio? Is it worth it?▼

Studio ($79/mo) is our ultimate tier for power users who need no limits. You get 10,000 requests per month, the highest rate limits (120/min), and a massive 750K context window. If you are running an AI-powered business, building apps, or need the absolute best performance with no ceilings, Studio is the one.

Can I get a refund?▼

Since the free tier gives you full access to test the service, there are no refunds. But you can cancel anytime and will not be charged again.

Subscriber Dashboard

Enter your API key to view usage, manage keys, and control your account.

Access Your Account

Enter Your API Key

Paste your API key below. Keys start with nga_live_

📝 NiceGuyAPI Blog

Guides, Tutorials & Updates

Learn how to get the most out of NiceGuyAPI. From beginner setup to advanced agent workflows.

Tutorial 5 min

Getting Started in 5 Minutes

Guide 8 min

Best Free AI APIs in 2026

We compared OpenRouter, OpenAI, Anthropic, and more. See why developers are switching to unified gateways.

Advanced 12 min

Build an AI Agent

Step-by-step tutorial: Build a ReAct-style agent that searches the web, reads pages, and solves multi-step tasks.

Tutorial 6 min

OpenAI Drop-in Replacement

Replace your OpenAI API calls in one line of code. Works with all OpenAI SDKs — Python, JS, LangChain.

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✅

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The AI Backend for OpenClaw — and Everything Else

What Developers Are Saying

Get Your Free API Key — 30 Seconds

Who Is This For?

AI Agent

Chat Assistant

Content Creator

Coding Assistant

Image Generation

Song Generation

Build Apps & Games

OpenClaw Integration

Research & Learning

Business Automation

Why NiceGuyAPI?

Built-in AI Agent

One Key, All Models

OpenAI Compatible

Genuinely Free Tier

Pricing That Makes Sense

Fast Responses

Secure by Default

Why Not Just Use OpenAI Directly?

Simple, Honest Pricing

Hobbyist

Builder

Developer

Studio

How It Works

Get Your Key

Make a Request

Get a Response

See How Simple It Is

🤖 AI Agent — Do More Than Chat

Web Search

Web Fetch

Calculator

Multi-Step Reasoning

Conversation Memory

One API Call

Try It Right Now

Try the AI Chat

Getting Started Guide

1Get Your API Key (30 seconds)

2Try It in Your Browser (1 minute — no code!)

3Use It with cURL (Terminal)

4Use It with Python

5Use It with OpenClaw (Advanced)

6Manage Your Usage

7Use Agent Mode (Builder & Developer)

8Pick the Right Model

Frequently Asked Questions

Subscriber Dashboard

Enter Your API Key

Your Keys

Agent Memory

Guides, Tutorials & Updates

Getting Started in 5 Minutes

Best Free AI APIs in 2026

Build an AI Agent

OpenAI Drop-in Replacement

Payment Successful!

Wait — Get a Free API Key