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#142

GPT-5.4 Mini

OpenAI Release: 2026-03-17 Tested on: 2026-06-04 13:45 openai/gpt-5.4-mini::none
~400B total (~17B active)MoEClosedEstimated
(medium) (none)

Summary

GPT-5.4 Mini scores 4.9 on AI BENCHY and ranks #142. It has 10.0 reliability, a 30.2% pass rate, $0.038 total cost, and 1.13s average response time.

What makes GPT-5.4 Mini unique: Its total benchmark cost is unusually low for its score range. It is notably fast compared with similar models.

Model facts

Researched on 2026-08-12

Estimated
Parameters
~400B total (~17B active)
Architecture
MoE
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. Vendor does not disclose the architecture or count.

Score

4.9

Consistency

8.8

Total Output Tokens

2,541

Total Input Tokens

34,244

Input Price

$0.750 / 1M

Output Price

$4.500 / 1M

Tests Correct

Wrong Tests: 16

Attempt pass rate: 30.2%

Flaky tests

3

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

Response Time (avg)

1.13s

Response Time (max): 2.52s

Response Time (total): 23.82s

Hamster playing table tennis

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

#142 GPT-5.4 Mini

none
Cost
$0.010
Time
11.7s
Tokens
2,151 tok

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-08-14 02:16 Re-test 5.9 10.0 $0.095 Compare
2026-07-16 22:33 New test added 5.9 10.0 $0.095 Compare
2026-06-04 13:45 New test added 4.9 10.0 $0.038 Current run
2026-05-22 00:18 Suite changed 4.9 10.0 $0.035 Compare
2026-04-11 01:44 First recorded run 5.1 N/A $0.032 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)
2026-06-04 13:45 · New test added63/63 attempts4.98.810.05/2132,54134,244$0.0381.13s
2026-08-14 02:16 · Re-test66/66 attempts5.99.310.06/2227,89879,076$0.0951.58s
Difference-1.0-0.50.0-1+1-5357-44832-$0.058-450ms

Benchmark coverage differs: 63/63 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
2026-06-04 14:42 $0.750 / 1M $4.500 / 1M

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

Category Breakdown

Category Score Consistency Tests Correct
Anti-AI Tricks 3.1 8.1
Coding 5.5 10.0
Combined 3.0 10.0
Data parsing and extraction 10.0 10.0
Domain specific 3.5 4.4
General Intelligence 4.8 10.0
Instructions following 6.3 10.0
Puzzle Solving 5.4 10.0
Tool Calling 3.0 10.0
Trivia 3.0 10.0

Compared models