modelparams.dev

API MCP GitHub

Providers

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

Bedrock API parameters

modelparams.dev tracks API parameters for 56 Bedrock models. Open a model to see its full set: the type, default, valid range or values, and the conditions that gate each parameter.

56 models

Claude Haiku 4.5

Claude Opus 4.5 20251101

Claude Opus 4.6

Claude Sonnet 4.5

Claude Sonnet 4.6

Devstral 2 123B

GPT-OSS Safeguard 120B

GPT-OSS Safeguard 20B

Kimi K2 Thinking

Llama3 1 70B Instruct

Llama3 1 8B Instruct

Llama3 3 70B Instruct

Llama3 70B Instruct

Llama3 8B Instruct

Magistral Small 2509

Ministral 3 14B Instruct

Ministral 3 3B Instruct

Ministral 3 8B Instruct

Mistral 7B Instruct

Mistral Large 2402

Mistral Large 3 675B Instruct

Mistral Small 2402

Mixtral 8x7b Instruct

Nemotron Nano 12B

Nemotron Nano 3 30B

Nemotron Nano 9B

Nemotron Super 3 120B

Palmyra Vision 7B

Pixtral Large 2502

Qwen3 Coder 30B A3B

Qwen3 Coder Next

Qwen3 Next 80B A3B

Qwen3 Vl 235B A22B

Voxtral Mini 3B 2507

Voxtral Small 24B 2507

Other providers

OpenAI 55 models Anthropic 42 models Alibaba 41 models Google 31 models Z.ai 22 models Mistral 20 models NVIDIA 17 models Fireworks 16 models MiniMax 16 models xAI 12 models Moonshot AI 11 models Vertex 11 models Cohere 8 models Meta 6 models Groq 5 models DeepSeek 4 models Perplexity 4 models Xiaomi 3 models Cerebras 1 model 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/models/openai/gpt-5.5.json
curl https://modelparams.dev/api/v1/models/openai/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