modelparams.dev
API GitHub

Providers

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

Providers

Alibaba Anthropic Cohere DeepSeek Google Meta MiniMax Mistral Moonshot AI Nvidia OpenAI Perplexity xAI Xiaomi Z.ai
Length integer 45 models

Max completion tokens max_completion_tokens

Maximum number of output tokens the model may generate.

Type
integer
Default
4096
Range
1 – +∞

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
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…+∞ —
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 Subscription Moonshot AI integer — 1…+∞ —
Kimi K2.7 Code Highspeed Subscription 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 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…+∞ —
o1 OpenAI integer 4096 16…+∞ —
o3 OpenAI integer 4096 16…+∞ —
O3 Pro OpenAI integer 4096 16…+∞ —
o3-mini OpenAI integer 4096 16…+∞ —
o4-mini OpenAI integer 4096 16…+∞ —
Grok 4.20 0309 Non Reasoning xAI integer — 1…+∞ —
Grok 4.20 0309 Reasoning xAI integer — 1…+∞ —
Grok 4.3 xAI integer — 1…+∞ —
Grok Build 0.1 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 Plus Qwen3 Coder Flash Qwen3 Coder Plus Qwen3 Max Qwen3.5 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 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

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

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 3.1 Flash Lite Gemini 3.1 Flash Lite Preview Gemini 3.1 Pro Preview Gemini 3.5 Flash

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 Latest Devstral 2512 Devstral Latest Magistral Medium Latest Magistral Small Latest Ministral 14b Latest Ministral 3b Latest Ministral 8b Latest Mistral Large Latest Mistral Medium 3.5 Mistral Medium Latest Mistral Small Latest Open Mistral Nemo

Nvidia

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 4 Turbo Gpt 4 Turbo 2024-04-09 Gpt 4.1 Gpt 4.1 Mini Gpt 4.1 Nano Gpt 4o 2024-11-20 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-4o GPT-4o mini O1 Preview o1-mini

Perplexity

Sonar Sonar Deep Research Sonar Pro Sonar Reasoning Pro

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

Related length parameters

Max tokens max_tokens Stop sequence stop Max output tokens generationConfig.maxOutputTokens 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/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