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"}]
}'CLAUDE & CODEX. ONE ACCOUNT.
Build more.Pay less.
Claude and Codex, one account. Simple subscriptions and usage-based billing for developers.
- No credit card required
- Instant activation
- Usage-based billing
Same AI.
Lower costs.
Higher possibilities.
TWO PRODUCTS. ONE ACCOUNT.
Pick a model. Use the same workflow.
One StartupAPI account gives you Claude for reasoning, agents, and general AI work, and Codex for coding-focused workflows. Same key, same billing, same dashboard.
Usage you can see
Track every Codex call from the same dashboard you use for Claude. Clear limits, clear costs.
CODEX · COMING SOON
A dedicated Codex showcase is on the way.
For now, jump to pricing or read the Codex setup guide.
POWERED BY STARTUPAPI
Simple, transparent pricing
for every builder.
Get affordable Claude access with predictable subscriptions and a clean, hassle-free experience. No hidden costs. Just build.
Codex access is included with the same StartupAPI subscriptions that power Claude. Pick a plan and start coding — one account, one bill, two products.
ONE DAY PASS
One Day Pass
24 hours of Claude access when you just need to build.
₹199 / 24 hours
INR · 300K tokens · Claude Standard
- 300K tokens for 24 hours
- Claude Opus, Sonnet & Haiku
- 1 API key · 30 RPM
- Claude Code & Claude Desktop ready
- Non-recurring · no subscription
CLAUDE PRO
Claude Pro
Perfect for daily coding and development.
₹999 / 30 days
- 1.0M tokens per 5-hour allowance
- Up to 144M tokens per term
- 2 API keys · 30 RPM
- Claude Code & Claude Desktop ready
- Usage Credit backup available
CLAUDE MAX 5X
Claude Max 5x
For heavier Claude usage and power users.
₹3,999 / 30 days
- 5.0M tokens per 5-hour allowance
- Up to 720M tokens per term
- 5 API keys · 60 RPM
- Claude Code & Claude Desktop ready
- Usage Credit backup available
Secure & privateYour data stays yours
Instant accessStart building in minutes
Predictable billingNo hidden fees
TWO WAYS TO USE CLAUDE
SAME TOOLS. MORE POSSIBILITIES.
CLAUDE & CODEX WORKFLOWS
Connect Claude in a few steps. Run Codex on your repo in a few steps.
Use StartupAPI with Claude Code or Claude Desktop.
Keep your existing workflow and get started in minutes.
Use Codex through StartupAPI on the CLI you already use.
Point Codex at your StartupAPI key and pair-program on your real repo.
CONNECTED WORKFLOW
LIVE
1
API key created
DONE
2
Base URL set
DONE
3
Chatting with Claude
ACTIVE
CODEX VIDEO PLACEHOLDER
Drop the Codex demo at /public/videos/sapi-codex-demo.mp4.
Replace this placeholder with a real video element using the class cw-video-el and the attribute data-codex-src. The Claude Desktop ↔ Codex switch will load it through the same player.
- Save the Codex demo video at /public/videos/sapi-codex-demo.mp4.
- Replace this placeholder block with a video element using class cw-video-el and attribute data-codex-src="/videos/sapi-codex-demo.mp4".
- The Claude Desktop ↔ Codex switch already handles loading, autoplay, mute, and fullscreen.
PLACEHOLDER
Get your API key
Create a StartupAPI key from your dashboard in seconds.
Connect your workflow
Use it with Claude Code or Claude Desktop with zero friction.
Start building
Code, chat, and ship through StartupAPI right away.
Install Codex
Install the Codex CLI on your machine and sign in with your StartupAPI key.
Open a repository
Run Codex inside any project folder. It reads your files, tests, and config.
Pair on real work
Debug, refactor, and ship — with usage tracked in your StartupAPI dashboard.
GET STARTED IN MINUTES
From signup to your
first Claude call.
No complicated provisioning. Create an account, generate a key, and start building.
01
Create account
02
Generate API key
Open the dashboard, create a scoped key for Claude Code or Claude Desktop, and copy it.
03
Start building
Call Claude through StartupAPI. Track usage, costs, and limits from one place.
No credit card required
Start building in minutes
USAGE & ANALYTICS
Know exactly where
your credits go.
Live usage, token breakdown, model mix, and per-key activity. Built so you never lose track of a request.
Dashboard · Overview
Last 30 days · 3 API keys · Claude Sonnet dominant
CREDITS USED
$84.20
of $120 balance
REQUESTS
12,431
+18% vs last 30d
AVG / REQUEST
$0.0068
stable
Credits used over time
- This period
- Previous period
- claude-sonnet-4-6 72%
- claude-haiku-4-5 18%
- gpt-4o 7%
- Other 3%
REAL USE CASES
Built for the work
developers actually do.
CLAUDE CODE
Claude Code
Pair-program with Claude inside your editor, on your real codebase, with project-level context.
AI AGENTS
AI Agents
Run tool-using, multi-step agents with predictable per-token costs and clean usage limits.
AUTOMATION
Automation
Wire StartupAPI into pipelines, scripts, and cron jobs without complex provisioning or contracts.
SAAS APPS
SaaS Apps
Ship customer-facing features with usage-based metering and predictable monthly subscriptions.
FAQ
Questions developers ask first.
StartupAPI is a developer API platform that gives you access to supported Claude and AI models through one account, with prepaid Usage Credits or optional subscriptions.
START BUILDING
Start building with Claude and Codex.
One account, transparent billing, and the AI products you actually want to use.