Grok 4.20

grok-4.20 by xAI Released April 1, 2026
ReasoningFunction callingStructured outputPrompt cachingWeb searchComputer useImage inputFile inputAudio inputVideo inputEU hostingFree endpointUp to % off
Input from
$1.25 / 1M
Output from
$2.5 / 1M
Cached input from
$0.2 / 1M
Context window
2M
Endpoints
1
from 1 providers
Regions
United States

About Grok 4.20

Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities.

Grok 4.20 is a chat model by xAI, available on Eden AI through 1 endpoint from 1 provider, from $1.25 per million input tokens and $2.5 per million output tokens, with a context window of up to 2M tokens.

Providers and prices

1 endpoints from 1 providers, cheapest first, in USD per million tokens. Every one is called with the same Eden AI key: pin one with its endpoint ID, or let Eden AI route for you. Above 200K tokens: $2.5 input / $5 output per 1M.

Endpoint
Region
Context
Input / 1M
Output / 1M
Cached / 1M
Supports
xAI (United States)Official−%xai/grok-4.20
United States
2M
$1.25$1.25
$2.5
$0.2
ReasoningToolsJSONCacheVisionWeb

Performance

Measured on real Eden AI traffic over the last 30 days. Endpoints with too little traffic are not shown.

Fastest first token
0.77 s
xAI (United States)
Lowest latency
2.2 s
xAI (United States)
Highest throughput
72.7 tok/s
xAI (United States)
Best availability
100%
xAI (United States)
Endpoint
First token
Latency p50
Latency p95
Throughput
Availability
Cache hits
Tool errors
JSON errors
xAI (United States)
0.77 s
2.2 s
52.21 s
72.7 tok/s
100%
83.8%
50.38%
18.18%

Estimate your monthly cost

Enter your expected volume to compare every endpoint at once.

Call Grok 4.20 with Eden AI

Use the model ID to let Eden AI pick an endpoint, or an endpoint ID from the table above to pin one.

import requests

response = requests.post(
    "https://api.edenai.run/v3/chat/completions",
    headers={"Authorization": "Bearer YOUR_EDENAI_API_KEY"},
    json={
        "model": "",
        "messages": [{"role": "user", "content": "Hello!"}],
    },
)
print(response.json())

Questions about Grok 4.20

On Eden AI, prices for this model start at $1.25 per million input tokens and $2.5 per million output tokens. Prices differ by endpoint; the providers table lists each one. Above 200K tokens: $2.5 input / $5 output per 1M.

Up to 2M tokens, depending on the endpoint.

1 endpoints from 1 providers, available in: United States. All of them are called with the same Eden AI API key.

Yes. At least one endpoint is hosted in Europe; pin it with its endpoint ID from the providers table to keep requests in the EU.

Over the last 30 days, the fastest first token was 0.77 s (xAI (United States)) and the highest throughput was 72.7 tokens per second (xAI (United States)).