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#62

Step 3.5 Flash

Stepfun Release: 2026-02-01 Tested on: 2026-06-04 14:12 stepfun/step-3.5-flash::medium
(medium) (none)

Summary

Step 3.5 Flash scores 7.2 on AI BENCHY and ranks #62. It has 8.9 reliability, a 58.3% pass rate, $0.070 total cost, and 72.53s average response time.

What makes Step 3.5 Flash unique: It stands out most in Anti-AI Tricks, where it ranks #1, while Coding is its weakest area at #18. Its total benchmark cost is unusually low for its score range.

Score

7.2

Consistency

9.1

Reliability

8.9

Total Cost (Current Price)

$0.070 ↑ +218.4%

Tested at: $0.022

Total Output Tokens

287,560

Total Input Tokens

34,431

Input Price

$0.090 / 1M

Output Price

$0.300 / 1M

Tests Correct

Wrong Tests: 9

Attempt pass rate: 58.3%

Flaky tests

2

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

Response Time (avg)

72.53s

Response Time (max): 453.94s

Response Time (total): 1015.47s

Wrong answer: 4 Did not follow instructions: 3 No answer: 1 Timed out: 1

Hamster playing table tennis

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

#62 Step 3.5 Flash

medium
Cost
$0.008
Time
277.1s
Tokens
23,695 tok

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-07-16 23:25 New test added 6.0 9.2 $0.108 ↑ Compare
2026-06-04 14:12 New test added 7.2 8.9 $0.070 ↑ Current run
2026-05-22 00:30 Suite changed 7.4 9.3 $0.015 Compare
2026-05-08 15:30 Suite changed 7.6 10.0 $0.011 Compare
2026-04-11 00:35 First recorded run 7.9 N/A $0.000 Compare

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

Price History

Historical pricing data for this model from OpenRouter.

Date Input Price Output Price
2026-06-04 14:42 $0.090 / 1M $0.300 / 1M

Charts

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Total Output Tokens

Score vs Total Output Tokens

Quick Compare

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Category Breakdown

Category Score Consistency Tests Correct
Anti-AI Tricks 10.0 10.0
Coding 3.1 4.7
Combined 10.0 10.0
Data parsing and extraction 10.0 10.0
Domain specific 5.3 7.2
General Intelligence 5.5 10.0
Instructions following 8.3 10.0
Puzzle Solving 5.3 10.0
Tool Calling 10.0 10.0
Trivia 3.0 10.0

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