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#112

Grok 4.5

X AI Release: 2026-07-08 Tested on: 2026-10-01 02:38 x-ai/grok-4.5::low
~1.7T total (~170B active)MoEClosedEstimated
(high) (medium) (low)

Summary

Grok 4.5 scores 7.8 on AI BENCHY and ranks #112. It has 10.0 reliability, a 73.9% pass rate, $1.345 total cost, and 18.14s average response time.

What makes Grok 4.5 unique: It stands out most in Coding, where it ranks #1, while Agentic is its weakest area at #14. It is notably fast compared with similar models.

Model facts

Researched on 2026-08-12

Estimated
Parameters
~1.7T total (~170B active)
Architecture
MoE
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. Low-confidence external estimate; xAI does not disclose the count.

Parameter source Availability source

Score

7.8

Consistency

9.3

Reliability

10.0

Total Cost (Current Price)

$1.345

Total Output Tokens

121,415

Total Input Tokens

308,068

Input Price

$2.000 / 1M

Output Price

$6.000 / 1M

Cache Read Price

$0.300 / 1M

Cache Write Price

N/A

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Tests Correct

Wrong Tests: 7

Attempt pass rate: 73.9%

Flaky tests

2

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

18.14s

Response Time (max): 205.28s

Response Time (total): 417.21s

Wrong answer: 7

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#112 SpaceXAI: Grok 4.5

low
Cost
$0.011
Time
12.4s
Tokens
2,018 tok

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-10-01 02:38 Re-test 7.8 10.0 $1.345 Current run
2026-07-16 23:08 New test added 8.4 10.0 $0.935 Compare
2026-07-08 22:51 Initial run 7.8 10.0 $0.760 Compare

This run used a different benchmark suite. Keep suite changes in mind when reading historical movement.

Run comparison

RunBenchmark coverageScoreConsistencyReliabilityTests CorrectFlaky testsTotal Output TokensTotal Input TokensTotal CostResponse Time (avg)
2026-10-01 02:38 · Current run69/69 attempts7.89.310.016/232121,415308,068$1.34518.14s
2026-07-16 23:08 · New test added66/66 attempts8.49.710.016/221113,951125,596$0.93515.56s
Difference—-0.6-0.40.00+1+7464+182472+$0.410+2580ms

Benchmark coverage differs: 69/69 attempts (Target: 3 repeats per test) versus 66/66 attempts (Target: 3 repeats per test). Totals and repeat-sensitive metrics are not directly comparable.

These two runs used different benchmark suites, so the deltas reflect both model changes and suite changes.

Price History

Historical pricing data for this model from OpenRouter.

Date Input Price Output Price Cache Read Price Cache Write Price
2026-08-14 12:51 $2.000 / 1M $6.000 / 1M N/A N/A
2026-10-01 18:33 $2.000 / 1M $6.000 / 1M $0.300 / 1M N/A

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

Grok 4.5lowvsQwen3.7 PlusnoneGrok 4.5lowvsDeepSeek V4 Flash 0731mediumGrok 4.5lowvsGrok 4.6mediumGrok 4.5lowvsGPT-6 LunahighGrok 4.5lowvsStep 3.7 FlashmediumGrok 4.5lowvsMuse Glimmer 30BhighGrok 4.5lowvsGLM 5.3highGrok 4.5lowvsQwen3.5 Plus 2026-04-20mediumGrok 4.5lowvsGrok 4.5mediumGrok 4.5lowvsQwen3.7 Flashlow

Category Breakdown

Category Score Consistency Tests Correct
Agentic 5.0 10.0
Anti-AI Tricks 10.0 10.0
Coding 10.0 10.0
Combined 6.5 10.0
Data parsing and extraction 10.0 10.0
Domain specific 2.9 7.2
General Intelligence 6.1 3.1
Instructions following 9.8 10.0
Puzzle Solving 10.0 10.0
Tool Calling 10.0 10.0
Trivia 3.0 10.0

Compared models