grok-4.20

completions

byopenrouter

grok-4.20

completions

Published by: xaiProvider:

openrouter

Grok 4.20 is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truthful responses. Reasoning can be enabled/disabled using the `reasoning` `enabled` parameter in the API. [Learn more in our docs](https://openrouter.ai/docs/use-cases/reasoning-tokens#controlling-reasoning-tokens)

Released

Mar 10, 2026

Knowledge

Sep 11, 2025

Context

Input

$2 / 1M tokens

Output

$6 / 1M tokens

Cached

$0.2 / 1M tokens

Capabilities: tools, reasoning

Accepts: text, image

Returns: text

Released Mar 10, 2026Knowledge Cutoff: Sep 11, 2025

Context: 2M Input: $2 / 1M tokensOutput: $6 / 1M tokensCached: $0.2 / 1M tokensCapabilities: tools, reasoningAccepts: text, imageReturns: text

Access grok-4.20 through LangDB AI Gateway

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Benchmark Results for grok-4.20

Category Performance Scores:

Science: Score 77.86 (Top 14% - Rank #49)
Writing: Score 69.00 (Top 14% - Rank #49)
Academia: Score 68.50 (Top 3% - Rank #11)
Marketing: Score 69.13 (Top 10% - Rank #35)
Programming: Score 42.20 (Top 6% - Rank #21)

Overall Performance: 65.33806060606061 average score across all categories

Detailed Benchmark Scores:

Benchmark	Score	Percentile	Domain
HLE	30.00	Top 3%	General Knowledge
GPQA	88.50	Top 4%	STEM (Physics, Chemistry, Biology)
SciCode	44.70	Top 7%	Scientific
AA Coding Index	42.20	Top 6%	Programming
AAII	48.50	Top 3%	General

GPQA Score: 88.50 - Graduate-level reasoning benchmark

Model Comparison:

Provider: openrouter

Model Type: completions

Context Size: 2000000 tokens

Comparing against 348 models in the database

Category Scores

academia#7 programming#10

Benchmark Tests

View Other Benchmarks

HLE

30.0

General Knowledge

GPQA

88.5

STEM (Physics, Chemistry, Biology)

SciCode

44.7

Scientific

AA Coding Index

42.2

Programming

AAII

48.5

General

Metric	HLE	GPQA	SciCode	AA Coding Index	AAII
Score	30.0	88.5	44.7	42.2	48.5

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Code Examples

Integration samples and API usage

Code Samples for grok-4.20

Python SDK Example:

from openai import OpenAI

client = OpenAI(
    base_url="https://api.us-east-1.langdb.ai/projects/<your_project_id>",
    api_key="<your_api_key>"
)

response = client.chat.completions.create(
    model="grok-4.20",
    messages=[
        {"role": "user", "content": "Hello, how are you?"}
    ]
)

print(response.choices[0].message.content)

TypeScript SDK Example:

import OpenAI from 'openai';

const client = new OpenAI({
    baseURL: "https://api.us-east-1.langdb.ai/projects/<your_project_id>",
    apiKey: "<your_api_key>"
});

const response = await client.chat.completions.create({
    model: "grok-4.20",
    messages: [
        { role: "user", content: "Hello, how are you?" }
    ]
});

console.log(response.choices[0].message.content);

cURL Example:

curl -X POST "https://api.us-east-1.langdb.ai/projects/<your_project_id>/v1/chat/completions" \
  -H "Authorization: Bearer <your_api_key>" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "grok-4.20",
    "messages": [
        {"role": "user", "content": "Hello, how are you?"}
    ]
  }'

Model: grok-4.20

Provider: openrouter

API Endpoint: $https://api.us-east-1.langdb.ai

Create API Key

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grok-4.20 by openrouter - AI Model Details, Pricing, and Performance Metrics

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Access grok-4.20 through LangDB AI Gateway

Category Scores

Benchmark Tests

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