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

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
Length integer 100 models

Max completion tokens max_completion_tokens

Maximum number of output tokens the model may generate.

Type
integer
Default
varies by model
Range
1 – 131072

max_completion_tokens by model

The exact type, default, range, and conditions for max_completion_tokens on each model that documents it.

Model Provider Type Default Range / values Condition
DeepSeek v3.2 Alibaba integer — 1…+∞ —
DeepSeek v4 Flash Alibaba integer — 1…+∞ —
DeepSeek v4 Flash 0731 Alibaba integer — 1…+∞ —
DeepSeek v4 Pro Alibaba integer — 1…+∞ —
DeepSeek v4 Pro 0813 Alibaba integer — 1…+∞ —
GLM-5.1 Alibaba integer — 1…+∞ —
GLM-5.2 Alibaba integer — 1…+∞ —
Kimi K2.7 Code Alibaba integer — 1…+∞ —
Qwen3.6 27B Alibaba integer — 1…+∞ —
Qwen3.6 35B A3B Alibaba integer — 1…+∞ —
Qwen3.6 Flash Alibaba integer — 1…+∞ —
Qwen3.6 Max Preview Alibaba integer — 1…+∞ —
Qwen3.6 Plus Alibaba integer — 1…+∞ —
Qwen3.7 Flash Alibaba integer — 1…+∞ —
Qwen3.7 Max Alibaba integer — 1…+∞ —
Qwen3.7 Plus Alibaba integer — 1…+∞ —
Qwen3.8 2.4t A95B Alibaba integer — 1…+∞ —
Qwen3.8 27B Alibaba integer — 1…+∞ —
Qwen3.8 Max Alibaba integer — 1…+∞ —
Zai GLM-4.7 Cerebras integer — 1…+∞ —
Gemma 3 12B IT Google integer — 1…131072 —
Gemma 3 1B IT Google integer — 1…32768 —
Gemma 3 27B IT Google integer — 1…131072 —
Gemma 3 4B IT Google integer — 1…131072 —
Gemma 3n E2B IT Google integer — 1…32768 —
Gemma 3n E4B IT Google integer — 1…32768 —
Gemma 4 12B IT Google integer — 1…+∞ —
Gemma 4 E2B IT Google integer — 1…+∞ —
Gemma 4 E4B IT Google integer — 1…+∞ —
GPT-OSS 120B Groq integer — 1…+∞ —
GPT-OSS 20B Groq integer — 1…+∞ —
GPT-OSS Safeguard 20B Groq integer — 1…+∞ —
Qwen3 32B Groq integer — 1…+∞ —
Qwen3.6 27B Groq integer — 1…+∞ —
Llama 3.3 70B Instruct Meta integer — 1…+∞ —
Llama 3.3 8B Instruct Meta integer — 1…+∞ —
Llama 4 Maverick 17B 128E Instruct FP8 Meta integer — 1…+∞ —
Llama 4 Scout 17B 16E Instruct FP8 Meta integer — 1…+∞ —
Muse Spark 1.1 Meta integer — 1…+∞ —
Muse Spark 1.2 Contributor Meta integer — 1…+∞ —
MiniMax M2 MiniMax integer — 1…+∞ —
MiniMax M2.1 MiniMax integer — 1…+∞ —
MiniMax M2.1 Highspeed MiniMax integer — 1…+∞ —
MiniMax M2.5 MiniMax integer — 1…+∞ —
MiniMax M2.5 Highspeed MiniMax integer — 1…+∞ —
MiniMax M2.7 MiniMax integer — 1…+∞ —
MiniMax M2.7 Highspeed MiniMax integer — 1…+∞ —
MiniMax M3 MiniMax integer — 1…+∞ —
Kimi K2.5 Moonshot AI integer — 1…+∞ —
Kimi K2.6 Moonshot AI integer — 1…+∞ —
Kimi K2.6 Subscription Moonshot AI integer — 1…+∞ —
Kimi K2.7 Code Moonshot AI integer 32768 1…+∞ —
Kimi K2.7 Code Subscription Moonshot AI integer — 1…+∞ —
Kimi K2.7 Code Highspeed Moonshot AI integer 32768 1…+∞ —
Kimi K2.7 Code Highspeed Subscription Moonshot AI integer — 1…+∞ —
Kimi K3 Moonshot AI integer — 1…+∞ —
Moonshot v1 128K Moonshot AI integer — 1…+∞ —
Moonshot v1 32K Moonshot AI integer — 1…+∞ —
Moonshot v1 8K Moonshot AI integer — 1…+∞ —
GPT-4 OpenAI integer — 1…131072 —
GPT-5 OpenAI integer 4096 16…+∞ —
GPT-5 Chat Latest OpenAI integer 4096 16…+∞ —
GPT-5 Mini OpenAI integer 4096 16…+∞ —
GPT-5 Nano OpenAI integer 4096 16…+∞ —
GPT-5.1 OpenAI integer 4096 16…+∞ —
GPT-5.2 OpenAI integer 4096 16…+∞ —
GPT-5.3 Codex OpenAI integer 4096 16…+∞ —
GPT-5.4 OpenAI integer 4096 16…+∞ —
GPT-5.4 Mini OpenAI integer 4096 16…+∞ —
GPT-5.4 Nano OpenAI integer 4096 16…+∞ —
GPT-5.4 Pro OpenAI integer 4096 16…+∞ —
GPT-5.5 OpenAI integer 4096 16…+∞ —
GPT-5.5 Pro OpenAI integer 4096 16…+∞ —
GPT-5.6 OpenAI integer 4096 1…+∞ —
GPT-5.6 Luna OpenAI integer 4096 1…+∞ —
GPT-5.6 Sol OpenAI integer 4096 1…+∞ —
GPT-5.6 Terra OpenAI integer 4096 1…+∞ —
GPT-OSS 120B OpenAI integer — 1…131072 —
GPT-OSS 20B OpenAI integer — 1…131072 —
GPT-OSS Safeguard 120B OpenAI integer — 1…131072 —
GPT-OSS Safeguard 20B OpenAI integer — 1…131072 —
o1 OpenAI integer 4096 16…+∞ —
o3 OpenAI integer 4096 16…+∞ —
o3-mini OpenAI integer 4096 16…+∞ —
o3-pro OpenAI integer 4096 16…+∞ —
o4-mini OpenAI integer 4096 16…+∞ —
Grok 4.20 0309 Non Reasoning xAI integer — 1…+∞ —
Grok 4.20 0309 Non Reasoning Subscription xAI integer — 1…+∞ —
Grok 4.20 0309 Reasoning xAI integer — 1…+∞ —
Grok 4.20 0309 Reasoning Subscription xAI integer — 1…+∞ —
Grok 4.3 xAI integer — 1…+∞ —
Grok 4.3 Subscription xAI integer — 1…+∞ —
Grok 4.5 xAI integer — 1…+∞ —
Grok 4.5 Subscription xAI integer — 1…+∞ —
Grok 4.6 xAI integer — 1…+∞ —
Grok Build 0.1 xAI integer — 1…+∞ —
Grok Build 0.1 Subscription xAI integer — 1…+∞ —
MiMo v2.5 Xiaomi integer — 1…+∞ —
MiMo v2.5 Subscription Xiaomi integer — 1…+∞ —
MiMo v2.5 Pro Xiaomi integer — 1…+∞ —

Models without max_completion_tokens documented yet

These models don't list max_completion_tokens in the catalog. That may mean the provider doesn't accept it, or it simply hasn't been added yet — the data is community-maintained.

Alibaba

Qwen Flash Qwen Max Qwen Plus Qwen Turbo Qwen3 235B A22B Thinking 2507 Qwen3 30B A3B Instruct 2507 Qwen3 30B A3B Thinking 2507 Qwen3 Coder Flash Qwen3 Coder Next Qwen3 Coder Plus Qwen3 Max Qwen3 Next 80B A3B Instruct Qwen3 Next 80B A3B Thinking Qwen3 Vl 235B A22B Instruct Qwen3 Vl 235B A22B Thinking Qwen3.5 Qwen3.5 122B A10B Qwen3.5 27B Qwen3.5 35B A3B Qwen3.5 397B A17B Qwen3.5 Flash QwQ Plus

Anthropic

Claude 3 Opus 20240229 Claude 3 Opus Latest Claude 3.5 Haiku 20241022 Claude 3.5 Haiku Latest Claude 3.5 Sonnet 20241022 Claude 3.5 Sonnet Latest Claude 3.7 Sonnet 20250219 Claude 3.7 Sonnet Latest Claude Fable 5 Claude Fable 5 Claude Haiku 4 Claude Haiku 4 Claude Haiku 4.5 Claude Haiku 4.5 Claude Haiku 4.5 20251001 Claude Haiku 4.5 20251001 Claude Opus 4 Claude Opus 4 20250514 Claude Opus 4 20250514 Claude Opus 4.1 20250805 Claude Opus 4.1 20250805 Claude Opus 4.5 20251101 Claude Opus 4.5 20251101 Claude Opus 4.6 Claude Opus 4.6 Claude Opus 4.7 Claude Opus 4.7 Claude Opus 4.8 Claude Opus 4.8 Claude Opus 5 Claude Opus 5 Claude Sonnet 4 Claude Sonnet 4 20250514 Claude Sonnet 4 20250514 Claude Sonnet 4.5 Claude Sonnet 4.5 Claude Sonnet 4.5 20250929 Claude Sonnet 4.5 20250929 Claude Sonnet 4.6 Claude Sonnet 4.6 Claude Sonnet 5 Claude Sonnet 5

Bedrock

Claude Haiku 4.5 Claude Opus 4.5 20251101 Claude Opus 4.6 Claude Sonnet 4.5 Claude Sonnet 4.6 DeepSeek R1 DeepSeek v3.2 Devstral 2 123B Gemma 3 12B IT Gemma 3 27B IT Gemma 3 4B IT GLM-4.7 GLM-4.7 Flash GLM-5 GPT-OSS 120B GPT-OSS 20B GPT-OSS Safeguard 120B GPT-OSS Safeguard 20B Kimi K2 Thinking Kimi K2.5 Llama3 1 70B Instruct Llama3 1 8B Instruct Llama3 3 70B Instruct Llama3 70B Instruct Llama3 8B Instruct Magistral Small 2509 MiniMax M2 MiniMax M2.1 MiniMax M2.5 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 Nova 2 Lite Nova Lite Nova Micro Nova Pro Palmyra Vision 7B Palmyra X4 Palmyra X5 Pixtral Large 2502 Qwen3 32B Qwen3 Coder 30B A3B Qwen3 Coder Next Qwen3 Next 80B A3B Qwen3 Vl 235B A22B Voxtral Mini 3B 2507 Voxtral Small 24B 2507

Cohere

Command A 03 2025 Command A Plus 05 2026 Command A Reasoning 08 2025 Command A Translate 08 2025 Command A Vision 07 2025 Command R 08 2024 Command R Plus 08 2024 Command R7B 12 2024

DeepSeek

DeepSeek Chat DeepSeek Reasoner DeepSeek-V4 Flash DeepSeek-V4 Pro

Fireworks

DeepSeek v4 Flash 0731 DeepSeek v4 Pro DeepSeek v4 Pro 0813 GLM-5p2 GPT-OSS 120B GPT-OSS 20B Inkling Kimi K2p6 Kimi K2p7 Code Kimi K3 MiniMax M2p7 MiniMax M3 Muse Glimmer 30B Qwen3p7 Plus Qwen3p8 2p4t A95B Qwen3p8 Max

Google

Gemini 2.5 Flash Gemini 2.5 Flash Gemini 2.5 Flash Lite Gemini 2.5 Flash Lite Gemini 2.5 Pro Gemini 2.5 Pro Gemini 3 Flash Preview Gemini 3 Flash Preview Gemini 3.1 Flash Lite Gemini 3.1 Flash Lite Gemini 3.1 Flash Lite Preview Gemini 3.1 Flash Lite Preview Gemini 3.1 Pro Preview Gemini 3.1 Pro Preview Gemini 3.1 Pro Preview Customtools Gemini 3.5 Flash Gemini 3.5 Flash Lite Gemini 3.6 Flash Gemini 3.7 Flash Gemini Flash Latest Gemma 4 26B A4B IT Gemma 4 31B IT

MiniMax

MiniMax M2 MiniMax M2.1 MiniMax M2.1 Highspeed MiniMax M2.5 MiniMax M2.5 Highspeed MiniMax M2.7 MiniMax M2.7 Highspeed MiniMax M3

Mistral

Codestral 2508 Codestral Latest Devstral 2512 Devstral Latest Magistral Medium Latest Magistral Small Latest Ministral 14B 2512 Ministral 14B Latest Ministral 3B 2512 Ministral 3B Latest Ministral 8B 2512 Ministral 8B Latest Mistral Large 2512 Mistral Large Latest Mistral Medium 3 Mistral Medium 3.5 Mistral Medium Latest Mistral NeMo Mistral Small 2603 Mistral Small Latest

NVIDIA

DeepSeek v4 Flash 0731 GLiNER PII Llama 3.1 NemoGuard 8B Topic Control Llama 3.1 Nemotron Nano 8B v1 Llama 3.1 Nemotron Safety Guard 8B v3 Llama 3.1 Nemotron Ultra 253B v1 Llama 3.3 Nemotron Super 49B v1 Llama 3.3 Nemotron Super 49B v1.5 NemoGuard Jailbreak Detect Nemotron 3 Nano 30B A3B Nemotron 3 Super 120B A12B Nemotron 3 Ultra Nemotron 3 Ultra 550B A55B Nemotron Content Safety Reasoning 4B Nemotron Mini 4B Instruct Riva Translate 4B Instruct v1.1 USDCode Llama 3.1 70B Instruct

OpenAI

ChatGPT 4o Latest GPT-3.5 Turbo GPT-3.5 Turbo 16K GPT-4 0613 GPT-4 Turbo GPT-4 Turbo 2024-04-09 GPT-4.1 GPT-4.1 Mini GPT-4.1 Nano GPT-4o GPT-4o 2024-11-20 GPT-4o mini GPT-5.1 Codex GPT-5.1 Codex Max GPT-5.2 GPT-5.2 Codex GPT-5.3 Codex GPT-5.3 Codex Spark GPT-5.4 GPT-5.4 Mini GPT-5.4 Pro GPT-5.5 GPT-5.5 Pro GPT-5.6 Luna GPT-5.6 Sol GPT-5.6 Terra o1-mini o1-preview

Perplexity

Sonar Sonar Deep Research Sonar Pro Sonar Reasoning Pro

Thinking Machines

Inkling

Vertex

Gemini 2.5 Flash Gemini 2.5 Flash Lite Gemini 2.5 Pro Gemini 3 Flash Preview Gemini 3.1 Flash Lite Gemini 3.1 Pro Preview Gemini 3.1 Pro Preview Customtools Gemini 3.5 Flash Gemini 3.5 Flash Lite Gemini 3.6 Flash Gemini 3.7 Flash

xAI

Grok 4.20 Multi Agent 0309

Z.ai

GLM-4.5 GLM-4.5 GLM-4.5-Air GLM-4.5-Air GLM-4.5-AirX GLM-4.5-Flash GLM-4.5-X GLM-4.6 GLM-4.6 GLM-4.7 GLM-4.7 GLM-4.7-Flash GLM-4.7-FlashX GLM-5 GLM-5 GLM-5-Turbo GLM-5-Turbo GLM-5.1 GLM-5.1 GLM-5.2 GLM-5.2 GLM-5.3

Related length parameters

Max tokens max_tokens Max tokens inferenceConfig.maxTokens Stop sequences inferenceConfig.stopSequences Stop sequence stop Max output tokens generationConfig.maxOutputTokens Candidate count generationConfig.candidateCount Stop sequences generationConfig.stopSequences Stop sequences stop_sequences Number of completions n Max output tokens max_output_tokens

Resources

All parameters Use the API 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