One API key. Every frontier model. 60% cheaper.

Hey developer 👋 Access genuine GPT-5.6, GPT-5.6 Sol, Claude Fable 5, Claude Opus 4.8, Claude Sonnet 4.6, Gemini 3.5 Flash, and 20+ models through one OpenAI-compatible endpoint. No juggling keys. No surprise bills.

View pricing

XPERSONAAPI connected

Choose a model

Claude Fable 5(Fable 5)Selected

GPT-5.6 Sol(Sol)Available

Gemini 3.5 Flash(Flash)Available

base_url = "https://api.xpersona.co/v1"

A five-minute switch

Try it before you buy.

Drop-in replacement. Same code, cheaper tokens.

import openai
client = openai.OpenAI(
    base_url="https://api.xpersona.co/v1",
    api_key="your-key-here"
)
response = client.chat.completions.create(
    model="gpt-4o",
    messages=[{"role": "user", "content": "Hello!"}]
)

60-70% below official API list prices on many premium models

OpenAI-compatible - drop-in replacement

Capacity pauses automatically - no overages

Built for developers shipping real products

Tired of managing three API keys? Use one.

OpenAIAnthropicGoogle

“I replaced three API keys with one endpoint and cut my AI costs by 60%. Took 5 minutes to switch.”
ACAlex ChenSolo Developer

Transparent token economics

See the savings.

Model	Official API Price	xpersona Price	You Save
GPT-5.6 Sol (input)	$5.00 / 1M tokens	$1.50 / 1M tokens	70%
Claude Fable 5 (input)	$10.00 / 1M tokens	$3.00 / 1M tokens	70%
Claude Opus 4.8 (input)	$5.00 / 1M tokens	$1.50 / 1M tokens	70%

Pricing varies by model tier. Full pricing available in dashboard.

How it works

From signup to first request in four steps.

Sign up in 30 seconds

Copy your one API key

Pick GPT, Claude, Gemini, or Xpersona models

Start building - same code, cheaper tokens

Start small, scale when ready

Choose the room your work needs.

Starter

Start with $2

No subscription. No auto-refill. Just prepaid credits to try every model.

Access all 20+ models
OpenAI-compatible endpoint
Capacity pauses automatically

Need higher capacity? Monthly plans:

Builder

$20/mo

1x capacity, full catalog, no overages

Pro

$100/mo

5x capacity, priority support

Studio

$200/mo

20x capacity for heavy workflows

Scale

$350/mo

50x capacity, highest allowance

Why Xpersona?

Lower cost without integration sprawl.

Price

60-70% below direct list prices on many premium routes.

Simplicity

One key, one endpoint, one dashboard.

Control

Capacity pauses cleanly. No overage surprises.

FAQ

The short answers.

Is this really cheaper than OpenAI direct?

Yes - many routes are 60-70% below official list prices. See the comparison above.

Do I need to change my code?

No. Xpersona uses an OpenAI-compatible endpoint, so most clients only need a base URL and API key change.

What happens if I hit my capacity?

Requests pause. You can upgrade or add prepaid credits, but Xpersona does not create a surprise overage bill.