Grok 4 Fast

Grok / X.AI • API Price Comparison

📏 Context: 2,000,000 tokensAdded Mar 3, 2026

Grok 4 Fast is a large language model by Grok / X.AI with a 2M-token context window. Prices are collected daily from official provider pages and every tracked channel, then cross-checked by a data-accuracy audit.

Model performance benchmarks

Scores retain their original benchmark, version and metric. We do not combine them into a site-wide score; results from different versions are not directly comparable.

GPQA Diamond

60.6%

DiamondArtificial Analysis current suite · ACCURACYAs of 2026-09-20

Humanity's Last Exam

4.5%

Text onlyArtificial Analysis current suite · ACCURACYAs of 2026-09-20

SciCode

32.9%

MainArtificial Analysis current suite · PASS_RATEAs of 2026-09-04

Terminal-Bench Hard

12.1%

HardArtificial Analysis current suite · SUCCESS_RATEAs of 2026-09-20

IFBench

37.7%

MainArtificial Analysis current suite · ACCURACYAs of 2026-09-20

MMMU-Pro

48.1%

MainArtificial Analysis current suite · ACCURACYAs of 2026-09-20

💰 Cheapest Option

N/A

-/1M input

-/1M output

🏢 Official Price

N/A

No official channel available

🇨🇳 Best in China

No China-friendly options

📊 Channel Price Comparison

Compare grok-4-fast API prices across all available channels • 0 channels available

Channel	Type	Input / 1M	Output / 1M	Rate Limit	China	vs Official

📈 Price History

Every scraper-detected price change is recorded. Same-day multiple changes take the last value; unchanged channels carry the last observed price forward.

No price history yet. New price changes will appear after the next scraper run.

💵 Estimated Monthly Costs

Based on typical usage patterns (input:output = 2:1 ratio); all channels converted to USD for comparison

Usage Level	Tokens/Month
🐣 Light	0.1M in + 0.1M out
📊 Medium	1.0M in + 0.5M out
🚀 Heavy	10.0M in + 5.0M out
🏢 Enterprise	100.0M in + 50.0M out

Frequently asked questions about grok-4-fast

What is the context window of Grok 4 Fast?

Grok 4 Fast offers a 2,000,000-token context window.

How often are Grok 4 Fast prices updated, and how reliable is the data?

Prices are scraped daily from official pricing pages and every tracked channel, with every significant change recorded in a price-history log. A daily read-only data audit cross-checks each channel against the model producer's published price and flags stale or inconsistent rows for correction.

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