Low cost

grok-4.20-fast

Name: grok-4.20-fast
Brand: Router One
SKU: grok-4.20-fast

Model IDgrok-4.20-fast

chatstreamingtool_calling

Try it Quick Start

Call summary

Input

$0.08 / 1M tokens

Output

$0.20 / 1M tokens

Context Window

256K

Available Configurations

Capabilities

Routing mode

auto

Available Configurations

Compare context, capabilities, and effective pricing by routing mode.

Routing mode

auto

Capabilities

chatstreamingtool_calling

Context Window

256K

Input

$0.08 / 1M tokensCache write: $0.08

Output

$0.20 / 1M tokensCache read: $0.02

Routing mode	Capabilities	Context Window	Input	Output
auto	chatstreamingtool_calling	256K	$0.08 / 1M tokensCache write: $0.08	$0.20 / 1M tokensCache read: $0.02

Integration

OpenAI compatible

Endpoint

/v1/chat/completions

Model ID

grok-4.20-fast

Routing mode

auto

bash

curl -X POST \
  https://api.router.one/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "grok-4.20-fast",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'

Get API Key