How much does Drex V1.5 cost?

On the Respan gateway, Drex V1.5 costs $0.04 per 1M input tokens and $0.00 per 1M output tokens on OpenRouter, after gateway discounts.

Which providers serve Drex V1.5 on Respan?

Drex V1.5 is served by OpenRouter.

What is Drex V1.5's context window?

Drex V1.5 accepts up to 131K tokens of context.

How do I use Drex V1.5 with the Respan gateway?

Point any OpenAI-compatible SDK at https://api.respan.ai/api/ with your Respan API key and set the model to "drex-v1.5". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

How fast is Drex V1.5?

Over the last 30 days of requests through the Respan gateway, the fastest provider was OpenRouter at 92 tokens per second, and the lowest response latency was 0.7 seconds on OpenRouter. Speed varies with request size and provider.

Drex V1.5

Drex v1.5 is a 9B decision model from Nace.AI. Given a state (text or JSON) and typed questions (yes/no, multiple choice, or ordinal score), it returns a calibrated probability for...

Input / output price: $0.04 / $0.00 per 1M
Weekly tokens / requests: 172 / 5
Context: 131K tokens
Released: Oct 9, 2026

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Agent setup

Paste into Claude Code, Cursor, or Codex

Help me set up the Respan gateway: fetch and follow https://www.respan.ai/docs/agent-setup.md. Use model "drex-v1.5".

from openai import OpenAI

client = OpenAI(

    base_url="https://api.respan.ai/api/",

    api_key="YOUR_RESPAN_API_KEY",

)

response = client.chat.completions.create(

    model="drex-v1.5",

    messages=[{"role": "user", "content": "Hello!"}],

)

print(response.choices[0].message.content)

import OpenAI from "openai";

const client = new OpenAI({

  baseURL: "https://api.respan.ai/api/",

  apiKey: "YOUR_RESPAN_API_KEY",

});

const response = await client.chat.completions.create({

  model: "drex-v1.5",

  messages: [{ role: "user", content: "Hello!" }],

});

console.log(response.choices[0].message.content);

curl https://api.respan.ai/api/chat/completions \

  -H "Authorization: Bearer YOUR_RESPAN_API_KEY" \

  -H "Content-Type: application/json" \

  -d '{

    "model": "drex-v1.5",

    "messages": [{"role": "user", "content": "Hello!"}]

}'

Read docs

Providers

One provider serves this model, priced per 1M tokens after gateway discounts.

Provider	Context	Input	Output	Cache read	Capabilities
OpenRouter`openrouter/nace-ai/drex-v1.5`	131K	$0.04/M	$0.00/M	$0.00/M

Is a provider down? OpenRouter status

Pricing

USD per 1M tokens on OpenRouter, after gateway discounts.

Input: $0.04 per 1M
Output: $0.00 per 1M

Cost by volume

Total cost from 0 to 1T tokens.

$0.04/MOpenRouter

Throughput and latency

30-day averages from requests through the Respan gateway. Under each figure, every model on the gateway by its average, this one in blue.

Output speed

Higher is better

92tokens/son OpenRouter

Faster than 84% of the other 512 models on the gateway

Response latency

Lower is better

0.7son OpenRouter

Faster than 88% of the other 525 models on the gateway

Apps

Use Drex V1.5 in the tools you already run. Each guide points the app at the Respan gateway.

Setup guides for more apps are in the integration docs.

Drex V1.5 FAQ

Short answers, built from the data on this page.

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