StartupAPI

SIMPLE APIS. MASSIVE POSSIBILITIES.

Build without limits.

Get powerful, reliable, and affordable access to Claude and other leading AI models - all through a single, developer-friendly API.

Get Started Free View Pricing
  • No credit card required
  • Instant activation
  • Usage-based billing

Same AI.
Lower costs.
Higher possibilities.

curl https://startupapi.io/v1/messages \
  -H "Authorization: Bearer YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4-6",
    "max_tokens": 256,
    "messages": [{"role": "user", "content": "Build something amazing"}]
  }'

Fast setupCreate an API key and start building.

Scoped API keysRevocable keys for your workflows.

Clear meteringSee token usage and request costs.

Flexible billingUsage Credits or a subscription.

BUILT FOR MODERN AI WORKFLOWS

CClaude Code AAnthropic-compatible API OOpenAI-compatible API { }REST / HTTP

WHY STARTUPAPI

Built for
developers, by
developers.

Production-focused API access, straightforward integration, and billing choices that fit how you build.

Explore all features

Fast to integrate

Use familiar request formats and start with a small, clear API surface.

Controlled access

Create scoped, revocable API keys and keep clear visibility into usage.

Multiple models

Access currently supported model families through one account and API.

Developer friendly

Clear documentation, Claude Code setup guides, and real support when needed.

MODELS

Access powerful AI models.

Use one API to access the models currently available through StartupAPI.

View all models

PRICING

Simple, transparent pricing.

Start with a subscription sized for your workload, with prepaid Usage Credits available when you need flexibility.

Showing USD prices (fixed commercial price). Switch to INR for ₹999 / ₹2,999.

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READY TO BUILD FASTER?

Start building with StartupAPI.

One account, supported AI models, and clear usage visibility.

Get Started Free No credit card required

BUILT FOR REAL WORKFLOWS

From first call to daily development.

Use StartupAPI across the practical ways developers work with AI.

01

Claude Code

Connect your StartupAPI key and work inside your existing project workflow.

Setup guide
02

AI agents

Use supported models for tool-driven and multi-step application workflows.

API reference
03

API integrations

Call Anthropic-compatible and OpenAI-compatible API surfaces from your stack.

Quickstart

FAQ

Frequently asked questions.

View all FAQ

StartupAPI provides developer access to supported AI models through familiar API formats, with prepaid Usage Credits or optional subscriptions.