modelparams.dev
API GitHub

Providers

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

Providers

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

NVIDIA model parameters

modelparams.dev tracks parameters for 16 NVIDIA models. Open a model to see its full set: the type, default, valid range or values, and the conditions that gate each parameter.

16 models

GLiNER PII
4 params
Llama 3.1 NemoGuard 8B Topic Control
6 params
Llama 3.1 Nemotron Nano 8B v1
7 params
Llama 3.1 Nemotron Safety Guard 8B v3
1 param
Llama 3.1 Nemotron Ultra 253B v1
7 params
Llama 3.3 Nemotron Super 49B v1
7 params
Llama 3.3 Nemotron Super 49B v1.5
7 params
NemoGuard Jailbreak Detect
0 params
Nemotron 3 Nano 30B A3B
5 params
Nemotron 3 Super 120B A12B
7 params
Nemotron 3 Ultra
Subscription 6 params
Nemotron 3 Ultra 550B A55B
7 params
Nemotron Content Safety Reasoning 4B
5 params
Nemotron Mini 4B Instruct
6 params
Riva Translate 4B Instruct v1.1
6 params
USDCode Llama 3.1 70B Instruct
4 params

Other providers

OpenAI 51 models Anthropic 41 models Google 24 models Z.ai 21 models MiniMax 16 models Mistral 13 models Alibaba 11 models Moonshot AI 11 models xAI 11 models Cohere 8 models DeepSeek 4 models Meta 4 models Perplexity 4 models Xiaomi 3 models Thinking Machines 1 model

Resources

Glossary Full catalog

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