docs/README.en.md

Grok2API

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This project is for learning and research only. You must comply with Grok Terms of Use and local laws and regulations. Do not use for illegal purposes.

Open source projects welcome everyone's support for secondary development and pull requests, but please retain the original author's and frontend's logos to respect the work of others!

Grok2API rebuilt with FastAPI, fully aligned with the latest web call format. Supports streaming/non-streaming chat, tools call, image generation/editing, video generation/upscale (text-to-video and image-to-video), deep reasoning, token pool concurrency, and automatic load balancing.

Quick Start

Local

uv sync
uv run main.py

Docker Compose

git clone https://github.com/chenyme/grok2api
cd grok2api

docker compose up -d

Vercel

Set DATA_DIR=/tmp/data and disable file logs with LOG_FILE_ENABLED=false.

For persistence, use MySQL / Redis / PostgreSQL and set SERVER_STORAGE_TYPE and SERVER_STORAGE_URL.

Render

Render free instances sleep after 15 minutes of inactivity; redeploy/restart will lose data.

For persistence, use MySQL / Redis / PostgreSQL and set SERVER_STORAGE_TYPE and SERVER_STORAGE_URL.

Admin Panel

• Access: http://<host>:8000/admin
• Default password: grok2api (config app.app_key, recommended to change)

Features:

• Token Management: import/add/delete tokens, view status and quota
• Status Filter: filter by status (active/limited/expired) or NSFW status
• Batch Ops: batch refresh/export/delete/enable NSFW
• NSFW Enable: one-click Unhinged for tokens (proxy or cf_clearance required)
• Config Management: update system config online
• Cache Management: view and clear media cache

Environment Variables

Configure .env

Name	Description	Default	Example
LOG_LEVEL	Log level	INFO	DEBUG
LOG_FILE_ENABLED	Enable file logging	true	false
DATA_DIR	Data dir (config/tokens/locks)	./data	/data
SERVER_HOST	Bind address	0.0.0.0	0.0.0.0
SERVER_PORT	Server port	8000	8000
SERVER_WORKERS	Uvicorn worker count	1	2
SERVER_STORAGE_TYPE	Storage type (local/redis/mysql/pgsql)	local	pgsql
SERVER_STORAGE_URL	Storage DSN (optional for local)	""	postgresql+asyncpg://user:password@host:5432/db

MySQL example: mysql+aiomysql://user:password@host:3306/db (if you provide mysql://, it will be converted to mysql+aiomysql://).

Quotas

• Basic account: 80 requests / 20h
• Super account: 140 requests / 2h

Models

Model	Cost	Account	Chat	Image	Video
grok-3	1	Basic/Super	Yes	Yes	-
grok-3-mini	1	Basic/Super	Yes	Yes	-
grok-3-thinking	1	Basic/Super	Yes	Yes	-
grok-4	1	Basic/Super	Yes	Yes	-
grok-4-mini	1	Basic/Super	Yes	Yes	-
grok-4-thinking	1	Basic/Super	Yes	Yes	-
grok-4-heavy	4	Super	Yes	Yes	-
grok-4.1-mini	1	Basic/Super	Yes	Yes	-
grok-4.1-fast	1	Basic/Super	Yes	Yes	-
grok-4.1-expert	4	Basic/Super	Yes	Yes	-
grok-4.1-thinking	4	Basic/Super	Yes	Yes	-
grok-4.20-beta	1	Basic/Super	Yes	Yes	-
grok-imagine-1.0	-	Basic/Super	-	Yes	-
grok-imagine-1.0-fast	-	Basic/Super	-	Yes	-
grok-imagine-1.0-edit	-	Basic/Super	-	Yes	-
grok-imagine-1.0-video	-	Basic/Super	-	-	Yes

API

POST /v1/chat/completions

Generic endpoint: chat, image generation, image editing, video generation, video upscaling

curl http://localhost:8000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $GROK2API_API_KEY" \
  -d '{
    "model": "grok-4",
    "messages": [{"role":"user","content":"Hello"}]
  }'

Supported request parameters

Field	Type	Description	Allowed values
model	string	Model ID	See model list above
messages	array	Message list	See message format below
stream	boolean	Enable streaming	true, false
reasoning_effort	string	Reasoning effort	none, minimal, low, medium, high, xhigh
temperature	number	Sampling temperature	0 ~ 2
top_p	number	Nucleus sampling	0 ~ 1
tools	array	Tool definitions	OpenAI function tools
tool_choice	string/object	Tool choice	auto, required, none, or a specific tool
parallel_tool_calls	boolean	Allow parallel tool calls	true, false
video_config	object	Video model only	Supported: grok-imagine-1.0-video
└─ aspect_ratio	string	Video aspect ratio	16:9, 9:16, 1:1, 2:3, 3:2, 1280x720, 720x1280, 1792x1024, 1024x1792, 1024x1024
└─ video_length	integer	Video length (seconds)	6, 10, 15
└─ resolution_name	string	Resolution	480p, 720p
└─ preset	string	Style preset	fun, normal, spicy, custom
image_config	object	Image models only	Supported: grok-imagine-1.0 / grok-imagine-1.0-fast / grok-imagine-1.0-edit
└─ n	integer	Number of images	1 ~ 10
└─ size	string	Image size	1280x720, 720x1280, 1792x1024, 1024x1792, 1024x1024
└─ response_format	string	Response format	url, b64_json, base64

Message format (messages):

Field	Type	Description
role	string	developer, system, user, assistant
content	string/array	Plain text or multimodal array

Multimodal content block types (content array):

type	Description	Example
text	Text	{"type": "text", "text": "Describe this image"}
image_url	Image URL	{"type": "image_url", "image_url": {"url": "https://..."}}
input_audio	Audio	{"type": "input_audio", "input_audio": {"data": "https://..."}}
file	File	{"type": "file", "file": {"file_data": "https://..."}}

Notes:

• image_url/input_audio/file only supports URL or Data URI (data:<mime>;base64,...); raw base64 will be rejected.
• reasoning_effort: none disables thinking output; any other value enables it.
• Tool calling is prompt-based + client-executed: the model emits <tool_call>{...}</tool_call> and the server parses it into tool_calls; tools are not executed server-side.
• grok-imagine-1.0-fast works similarly to the imagine waterfall stream, and can be called directly via /v1/chat/completions. Its n/size/response_format are globally controlled by the server's [imagine_fast] config.
• grok-imagine-1.0-fast streaming output in /chat/completions only returns the final image, hiding intermediate preview images.
• grok-imagine-1.0-fast streaming URL output will retain the original image filename (without appending -final).
• grok-imagine-1.0-edit requires an image; if multiple are provided, the last 3 images and last text are used.
• grok-imagine-1.0-video supports text-to-video and image-to-video via image_url (only the first image is used).
• Any other parameters will be discarded and ignored.

POST /v1/responses

OpenAI Responses API compatible endpoint (subset)

curl http://localhost:8000/v1/responses \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $GROK2API_API_KEY" \
  -d '{
    "model": "grok-4",
    "input": "Explain quantum tunneling",
    "stream": true
  }'

Supported request parameters

Field	Type	Description
model	string	Model ID
input	string/array	Input content (string, message array, or multimodal blocks)
instructions	string	System instructions
stream	boolean	Enable streaming
temperature	number	Sampling temperature
top_p	number	Nucleus sampling
tools	array	Tool definitions (function tools; built-in tool types listed below)
tool_choice	string/object	Tool choice (auto/required/none or a specific tool)
parallel_tool_calls	boolean	Allow parallel tool calls
reasoning	object	Reasoning options (supports effort)
└─ effort	string	Reasoning effort

Notes:

• Built-in tools web_search / file_search / code_interpreter are mapped to function tools for tool call emission only; hosted tool execution is not performed.
• Streaming includes response.output_text.* and response.function_call_arguments.* events.

POST /v1/images/generations

Image generation endpoint

curl http://localhost:8000/v1/images/generations \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $GROK2API_API_KEY" \
  -d '{
    "model": "grok-imagine-1.0",
    "prompt": "A cat floating in space",
    "n": 1
  }'

Supported request parameters

Field	Type	Description	Allowed values
model	string	Image model ID	grok-imagine-1.0
prompt	string	Prompt	-
n	integer	Number of images	1 - 10 (streaming: 1 or 2 only)
stream	boolean	Enable streaming	true, false
size	string	Image size	1280x720, 720x1280, 1792x1024, 1024x1792, 1024x1024
quality	string	Image quality	- (not supported)
response_format	string	Response format	url, b64_json, base64
style	string	Style	- (not supported)

Notes:

• quality and style are OpenAI compatibility placeholders and are not customizable yet.
• If more than 3 images are provided, only the last 3 are used.

POST /v1/images/edits

Image edit endpoint (multipart/form-data)

curl http://localhost:8000/v1/images/edits \
  -H "Authorization: Bearer $GROK2API_API_KEY" \
  -F "model=grok-imagine-1.0-edit" \
  -F "prompt=Make the image clearer" \
  -F "image=@/path/to/image.png" \
  -F "n=1"

Supported request parameters

Field	Type	Description	Allowed values
model	string	Image model ID	grok-imagine-1.0-edit
prompt	string	Edit prompt	-
image	file	Source image	png, jpg, webp
n	integer	Number of images	1 - 10 (streaming: 1 or 2 only)
stream	boolean	Enable streaming	true, false
size	string	Image size	1280x720, 720x1280, 1792x1024, 1024x1792, 1024x1024
quality	string	Image quality	- (not supported)
response_format	string	Response format	url, b64_json, base64
style	string	Style	- (not supported)

Notes:

• quality and style are OpenAI compatibility placeholders and are not customizable yet.

Configuration

Config file: data/config.toml

In production or behind a reverse proxy, make sure app.app_url is a publicly accessible URL, otherwise file links may be incorrect or result in 403.

v2.0 config migration: old configs are automatically migrated. The old [grok] section is mapped into the new config structure.

Module	Field	Key	Description	Default
app	app_url	App URL	External base URL used for file links.	""
	app_key	Admin password	Login password for admin panel.	grok2api
	api_key	API key	Optional API key for access (comma-separated string or array).	""
	public_enabled	Public mode	Enable public features.	false
	public_key	Public key	Public access key (optional).	""
	image_format	Image format	url or base64.	url
	video_format	Video format	html or url (processed link).	html
	temporary	Temporary chat	Enable temporary chat mode.	true
	disable_memory	Disable memory	Disable Grok memory.	true
	stream	Stream	Enable streaming by default.	true
	thinking	Thinking	Enable reasoning output by default.	true
	dynamic_statsig	Dynamic statsig	Generate dynamic Statsig values.	true
	filter_tags	Filter tags	Filter special tags in responses.	["xaiartifact","xai:tool_usage_card","grok:render"]
proxy	base_proxy_url	Base proxy URL	Proxy to Grok web.	""
	asset_proxy_url	Asset proxy URL	Proxy to Grok assets (img/video).	""
	enabled	CF auto refresh	Enable Cloudflare auto refresh.	false
	flaresolverr_url	FlareSolverr URL	FlareSolverr HTTP endpoint.	""
	refresh_interval	Refresh interval	Refresh cf_clearance interval (seconds).	3600
	timeout	Challenge timeout	CF challenge timeout (seconds).	60
	cf_clearance	CF clearance	Cloudflare clearance cookie.	""
	browser	Browser fingerprint	curl_cffi fingerprint (e.g. chrome136).	chrome136
	user_agent	User-Agent	HTTP User-Agent string.	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36
retry	max_retry	Max retry	Max retries for upstream failures.	3
	retry_status_codes	Retry codes	HTTP status codes that trigger retry.	[401, 429, 403]
	retry_backoff_base	Backoff base	Retry backoff base seconds.	0.5
	retry_backoff_factor	Backoff factor	Exponential backoff factor.	2.0
	retry_backoff_max	Backoff max	Max delay per retry (seconds).	20.0
	retry_budget	Retry budget	Max total retry time (seconds).	60.0
token	auto_refresh	Auto refresh	Enable token auto refresh.	true
	refresh_interval_hours	Refresh interval	Basic token refresh interval (hours).	8
	super_refresh_interval_hours	Super refresh interval	Super token refresh interval (hours).	2
	fail_threshold	Fail threshold	Consecutive failures to disable.	5
	save_delay_ms	Save delay	Merge write delay (ms).	500
	usage_flush_interval_sec	Usage flush interval	Minimum interval to flush usage fields to DB (seconds).	5
	reload_interval_sec	Reload interval	Multi-worker token reload interval (seconds).	30
cache	enable_auto_clean	Auto clean	Enable cache auto cleanup.	true
	limit_mb	Size limit	Cleanup threshold (MB).	512
chat	concurrent	Concurrency	Reverse chat concurrency limit.	50
	timeout	Timeout	Reverse chat timeout (seconds).	60
	stream_timeout	Stream timeout	Stream idle timeout (seconds).	60
image	timeout	Timeout	WebSocket timeout (seconds).	60
	stream_timeout	Stream timeout	WS stream idle timeout (seconds).	60
	final_timeout	Final timeout	Seconds to wait for final image.	15
	blocked_grace_seconds	Blocked grace	Grace seconds for suspected moderation.	10
	nsfw	NSFW	Enable NSFW.	true
	medium_min_bytes	Medium min bytes	Min bytes for medium image.	30000
	final_min_bytes	Final min bytes	Min bytes for final image.	100000
	blocked_parallel_attempts	Parallel attempts	Parallel retries on suspected block.	5
	blocked_parallel_enabled	Parallel enabled	Enable parallel retries.	true
imagine_fast	n	Count	Applies to grok-imagine-1.0-fast only.	1
	size	Size	1280x720 / 720x1280 / 1792x1024 / 1024x1792 / 1024x1024	1024x1024
	response_format	Response format	url / b64_json / base64	url
video	concurrent	Concurrency	Reverse video concurrency limit.	100
	timeout	Timeout	Reverse video timeout (seconds).	60
	stream_timeout	Stream timeout	Stream idle timeout (seconds).	60
voice	timeout	Timeout	Voice request timeout (seconds).	60
asset	upload_concurrent	Upload concurrency	Upload concurrency.	100
	upload_timeout	Upload timeout	Upload timeout (seconds).	60
	download_concurrent	Download concurrency	Download concurrency.	100
	download_timeout	Download timeout	Download timeout (seconds).	60
	list_concurrent	List concurrency	Asset list concurrency.	100
	list_timeout	List timeout	Asset list timeout (seconds).	60
	list_batch_size	List batch size	Tokens per list batch.	50
	delete_concurrent	Delete concurrency	Asset delete concurrency.	100
	delete_timeout	Delete timeout	Asset delete timeout (seconds).	60
	delete_batch_size	Delete batch size	Tokens per delete batch.	50
nsfw	concurrent	Concurrency	NSFW batch concurrency.	60
	batch_size	Batch size	NSFW batch size.	30
	timeout	Timeout	NSFW timeout (seconds).	60
usage	concurrent	Concurrency	Usage batch concurrency.	100
	batch_size	Batch size	Usage batch size.	50
	timeout	Timeout	Usage timeout (seconds).	60

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