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Providers

Alibaba Anthropic Cerebras Cohere DeepSeek Google Groq Meta MiniMax Mistral Moonshot AI NVIDIA OpenAI Perplexity Thinking Machines xAI Xiaomi Z.ai

Providers

Alibaba Anthropic Cerebras Cohere DeepSeek Google Groq Meta MiniMax Mistral Moonshot AI NVIDIA OpenAI Perplexity Thinking Machines xAI Xiaomi Z.ai
Google 4 params

Google Gemma 4 12B IT API parameters

These are the API parameters modelparams.dev tracks for Google Gemma 4 12B IT — the settings you send in a request. Each row gives the type, default, valid range or values, and the conditions that gate it. It's the same data the JSON API serves.

After the parameter count instead — how many weights Gemma 4 12B IT has? That's a different number, and we don't track it. Here's the difference.

Length 1 param
Parameter Type Default Description Condition
Max completion tokens
max_completion_tokens 		integer (1…+∞) — Maximum number of output tokens the model may generate. —
Sampling 3 params
Parameter Type Default Description Condition
Temperature
temperature 		number 1 Controls randomness. Lower values make outputs more focused; higher values make them more varied. Google's standardized Gemma 4 sampling uses 1.0. —
Top P
top_p 		number (0…1) 0.95 Controls nucleus sampling by limiting generation to tokens within the selected cumulative probability. —
Top K
top_k 		integer (0…+∞) 64 Limits generation to the selected number of highest-probability tokens. —

Google Gemma 4 12B IT API parameters in brief

Google Gemma 4 12B IT documents 4 API parameters, grouped by what they control:

Frequently asked questions

Which API parameters does Google Gemma 4 12B IT support?
Google Gemma 4 12B IT accepts 4 API parameters in the request body: max_completion_tokens, temperature, top_p, top_k.
What is the default temperature for Google Gemma 4 12B IT?
The default temperature for Google Gemma 4 12B IT is 1.
What is the default top_p for Google Gemma 4 12B IT?
The default top_p for Google Gemma 4 12B IT is 0.95, within a valid range of 0 to 1.
What is the default top_k for Google Gemma 4 12B IT?
The default top_k for Google Gemma 4 12B IT is 64, with a minimum of 0.

Resources

All Google models Glossary Full catalog

Gemma 4 12B IT — JSON

The full model definition as served by the API. Copy it or open the endpoint directly.

/api/v1/models/google/gemma-4-12B-it.json 
{
  "$schema": "https://modelparams.dev/api/v1/schema.json",
  "provider": "google",
  "authType": "api_key",
  "model": "gemma-4-12B-it",
  "params": [
    {
      "path": "max_completion_tokens",
      "label": "Max tokens",
      "description": "Maximum number of output tokens the model may generate.",
      "group": "generation_length",
      "type": "integer",
      "range": {
        "min": 1
      }
    },
    {
      "path": "temperature",
      "label": "Temperature",
      "description": "Controls randomness. Lower values make outputs more focused; higher values make them more varied. Google's standardized Gemma 4 sampling uses 1.0.",
      "group": "sampling",
      "type": "number",
      "default": 1
    },
    {
      "path": "top_p",
      "label": "Top P",
      "description": "Controls nucleus sampling by limiting generation to tokens within the selected cumulative probability.",
      "group": "sampling",
      "type": "number",
      "default": 0.95,
      "range": {
        "min": 0,
        "max": 1
      }
    },
    {
      "path": "top_k",
      "label": "Top K",
      "description": "Limits generation to the selected number of highest-probability tokens.",
      "group": "sampling",
      "type": "integer",
      "default": 64,
      "range": {
        "min": 0
      }
    }
  ]
}

Other Google models

Gemini 2.5 Flash 8 params View Gemini 2.5 Flash Subscription 8 params View Gemini 2.5 Flash Lite 8 params View Gemini 2.5 Flash Lite Subscription 8 params View Gemini 2.5 Pro 8 params View Gemini 2.5 Pro Subscription 8 params View Gemini 3 Flash Preview Subscription 8 params View Gemini 3.1 Flash Lite 8 params View Gemini 3.1 Flash Lite Subscription 8 params View Gemini 3.1 Flash Lite Preview Subscription 8 params View Gemini 3.1 Pro Preview Subscription 8 params View Gemini 3.5 Flash 8 params View Gemini Flash Latest 8 params View Gemma 3 12B IT 4 params View Gemma 3 1B IT 4 params View Gemma 3 27B IT 4 params View Gemma 3 4B IT 4 params View Gemma 3n E2B IT 4 params View Gemma 3n E4B IT 4 params View Gemma 4 26B A4B IT 9 params View Gemma 4 31B IT 9 params View Gemma 4 E2B IT 4 params View Gemma 4 E4B IT 4 params View

How to use

Building with an AI agent? Hit Copy to grab this whole guide as Markdown and paste it in — or point your agent straight at /llms.txt.

modelparams.dev is an open, community-maintained catalog of model parameters. Each entry shows the knobs you can turn — type, default, range, and the conditions that gate it.

The same model accessed via an API key and via a subscription usually exposes a different set of parameters. We list both as separate entries so the data stays honest.

Catalog API

The full catalog is static JSON, CORS-enabled, served from the edge.

curl https://modelparams.dev/api/v1/models.json

Each entry is keyed by provider/model for API-key variants; subscription variants append -subscription.

If you only need the params for one model contract, use the providerless endpoint. Subscription contracts are model slugs with -subscription. 

curl https://modelparams.dev/api/v1/params/gpt-5.5.json
curl https://modelparams.dev/api/v1/params/gpt-5.5-subscription.json

Single model

curl https://modelparams.dev/api/v1/models/anthropic/claude-opus-4-7.json
curl https://modelparams.dev/api/v1/models/anthropic/claude-opus-4-7-subscription.json

JSON Schema

Every entry validates against a JSON Schema you can use in your editor or pipeline. 

curl https://modelparams.dev/api/v1/schema.json

Add this header to any YAML you author for autocomplete in VS Code: 

# yaml-language-server: $schema=https://modelparams.dev/api/v1/schema.json

Logos

Provider logos are available at /assets/logos/{provider}.svg where {provider} is the provider slug. They use currentColor so they inherit your text color. 

curl https://modelparams.dev/assets/logos/anthropic.svg

Logos are sourced from the models.dev repo (MIT) and used under nominative fair use.

Contribute

The data lives in YAML under models/{provider}/{model}-{auth}.yaml in the GitHub repo. Open a PR; CI validates against the schema and rebuilds.

Edit on GitHub MIT licensed