Benchmark suiteUpdated May 19, 2026

Grok 4 Fast Chat.

A model-level benchmark profile for Grok 4 Fast Chat, combining Arena category ranks, suite indexes, commercial price and speed data, SWE-bench status, and lab context.

xAI lab page

Lab

xAI

Proprietary

Coverage

22%

2 of 9 tracked signals

Best Arena rank

#81

Text Arena

Best suite

#77

Value / 43

Model profile

Benchmark signal map.

This view treats missing values as coverage gaps, then puts every available score, rank, cost, and speed signal into the same visual hierarchy.

Analyst view

Grok 4 Fast Chat is strongest on value.

22% coverage

Its best composite result is rank #77 in the value view, with a 43 value index. The strongest raw Arena signal is Text Arena at rank #81 with 6,817 public votes.

Best current lane

Value

#77 / 43 value index

Strongest raw signal

Text

#81, 1421 score

Commercial posture

$0.275

Not listed first token / Not listed

Coverage gaps

WebDev ArenaVision ArenaSearch ArenaDocument ArenaLatencyOutput speedSWE-bench

Profile completeness

2 of 9 signals matched

22%

Arena categories

1/5

Text

Commercial match

Live

Grok 4 Fast (Non-reasoning)

SWE-bench

Not listed

No confident software benchmark row

Raw identifier

grok-4-fast-chat

Performance cockpit

Public benchmark scores

Arena rows show score, public rank, confidence interval, vote count, and publish date. Missing rows stay visible as coverage gaps.

Text Arena

Arena category

1,421#81

1413-1429 CI

6,817 votes

May 19, 2026

Arena public leaderboard dataset

WebDev Arena

Arena category

Not listed

No confident public Arena row for this category.

Coverage gap

Vision Arena

Arena category

Not listed

No confident public Arena row for this category.

Coverage gap

Search Arena

Arena category

Not listed

No confident public Arena row for this category.

Coverage gap

Document Arena

Arena category

Not listed

No confident public Arena row for this category.

Coverage gap

SWE-bench Verified

Software issue resolution

Not listed

No confident SWE-bench row matched to this model.

Coverage gap

Cost and speed

Commercial profile

Price, latency, and throughput are only shown when a confident commercial source row is matched.

Blended price

$0.275

USD / 1M tokens

Input price

$0.200

USD / 1M input tokens

Output price

$0.500

USD / 1M output tokens

Latency

Not listed

Median time to first token

Output speed

Not listed

Median generation speed

Matched source row

Grok 4 Fast (Non-reasoning)

Suite position

Composite ranks by benchmark lens.

These views combine available public signals into purpose-specific indexes. A missing card means the model lacks enough source coverage for that lens.

Value

Quality, price, latency, and output speed

#7743

value index

blended / 1M tokens$0.275

time to first tokenNot listed

output speedNot listed

Coding

Code Arena, SWE-bench, and output speed

Not listed

Not enough matched source rows for this composite view.

Agents