---
title: "Gemma 4 31B Gembrain X Core API pricing"
canonical: https://uplinkswitch.ai/models/gemma-4-31b-gembrain-x-core
generated: 2026-10-22T19:07:45.162Z
source: https://api.uplinkswitch.com/v1/catalog
base_url: https://api.uplinkswitch.com/v1
---

# Gemma 4 31B Gembrain X Core API pricing

Gemma 4 31B Gembrain X Core API at $1.071/M input and $1.071/M output tokens. 262,144-token context window. Works with the OpenAI SDK.

## Price per million tokens (USD)

| Tokens | Google (community tune) list price | UplinkSwitch | Under list |
| --- | --- | --- | --- |
| Input | — | $1.071 | — |
| Cached input | — | billed at the input rate | — |
| Output | — | $1.071 | — |

## Model

- Model id: `gemma-4-31b-gembrain-x-core`
- Formats: OpenAI SDK
- Base URL: https://api.uplinkswitch.com/v1
- Context window: 262,144 tokens
- Input: text and image
- Daily real-model check: Same fingerprint since Oct 20 (https://uplinkswitch.ai/proof#gemma-4-31b-gembrain-x-core)

## Request

### Python · OpenAI SDK

```python
from openai import OpenAI

client = OpenAI(
    base_url="https://api.uplinkswitch.com/v1",
    api_key="sk-uplink-live-...",
)

completion = client.chat.completions.create(
    model="gemma-4-31b-gembrain-x-core",
    messages=[{"role": "user", "content": "Summarize this in one line."}],
)
print(completion.choices[0].message.content)
```

### TypeScript · OpenAI SDK

```typescript
import OpenAI from 'openai';

const client = new OpenAI({
  baseURL: 'https://api.uplinkswitch.com/v1',
  apiKey: 'sk-uplink-live-...',
});

const completion = await client.chat.completions.create({
  model: 'gemma-4-31b-gembrain-x-core',
  messages: [{ role: 'user', content: 'Summarize this in one line.' }],
});
console.log(completion.choices[0].message.content);
```

### curl

```bash
curl https://api.uplinkswitch.com/v1/chat/completions \
  -H "authorization: Bearer sk-uplink-live-..." \
  -H "content-type: application/json" \
  -d '{"model":"gemma-4-31b-gembrain-x-core","messages":[{"role":"user","content":"Hello"}]}'
```

## Questions

### What is Gemma 4 31B Gembrain X Core?

Gemma 4 31B Gembrain X Core is a model from Google (community tune), with a 262,144-token context window, taking text and image input. Through UplinkSwitch it answers the OpenAI SDK on one key as gemma-4-31b-gembrain-x-core.

### How much does the Gemma 4 31B Gembrain X Core API cost?

$1.071 per million input tokens and $1.071 per million output tokens.

### Is Gemma 4 31B Gembrain X Core free?

It is pay as you go: prepaid credit from $10, with no subscription or monthly fee, billed per token. A 1,000-token prompt with a 500-token reply costs about $0.0016.

### What is the Gemma 4 31B Gembrain X Core context window?

Gemma 4 31B Gembrain X Core has a 262,144-token context window. It takes text and image input.

### What is the Gemma 4 31B Gembrain X Core model id?

gemma-4-31b-gembrain-x-core. Send it as the model through the OpenAI SDK with base URL https://api.uplinkswitch.com/v1.

### How do I get a Gemma 4 31B Gembrain X Core API key?

Create one in the console at uplinkswitch.ai/console: prepaid credit from $10, no subscription, and the key is live at once. The same key calls Gemma 4 31B Gembrain X Core and every other model in the catalog; send it as the bearer token with base URL https://api.uplinkswitch.com/v1.

### Is it the real Gemma 4 31B Gembrain X Core?

Every day each model gets the same test prompt, and a model always counts that prompt the same way; a swapped one would not. Gemma 4 31B Gembrain X Core's latest result: Same fingerprint since Oct 20.

### Is there a Gemma 4 31B Gembrain X Core API?

Yes: gemma-4-31b-gembrain-x-core on the OpenAI format at https://api.uplinkswitch.com/v1, $1.071 input and $1.071 output per million tokens. No weights to download and no GPU of your own; the key also runs every other model in the catalog.

### What is Gemma 4 31B Gembrain X Core based on?

Google’s Gemma 4 31B it, through Nimbz’s multi-step merge of four pillars built from seventeen Gemma 4 31B models (GarnetV2, Musica, MeroMero, Gutenberg, Equinox, Gemsicle and others), per its card.

### What license does Gemma 4 31B Gembrain X Core have?

The card lists Apache-2.0.

### What does Gemma 4 31B Gembrain X Core cost per 100 messages?

$0.2678 for 100 chat turns of 2,000 input and 500 output tokens each, at $1.071 input and $1.071 output per million tokens, from prepaid credit with no subscription.

### Should I turn thinking on for Gembrain X Core?

Per its card: off for fast answers, light roleplay, conversation and image prompts; on for a deeper read of the task or character and stricter, trait-locked adherence to the prompt structure.

### Gemma 4 31B Gembrain X Core or Gemma 4 31B Gembrain?

Gembrain X Core is Nimbz’s ground-up rebuild (card created 2026-06-30); Gembrain is the original merge (2026-05-11). Gemma 4 31B Gembrain X Core is $1.071 / $1.071 per million tokens in / out, $2.68 for 1,000 chat turns; Gemma 4 31B Gembrain is $0.35 / $1.575 per million tokens in / out, $1.49 for 1,000 chat turns. Both run on the same key, so send the same prompt to each.

## Related

- Uncensored LLM API: https://uplinkswitch.ai/uncensored
- SillyTavern setup: https://uplinkswitch.ai/guides/sillytavern
- Janitor AI setup: https://uplinkswitch.ai/guides/janitor-ai
- Chub AI setup: https://uplinkswitch.ai/guides/chub-ai
- SDKs setup: https://uplinkswitch.ai/guides/sdks
- Every model and price: https://uplinkswitch.ai/llms-full.txt
- Machine catalog: https://uplinkswitch.ai/ai-catalog.json