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#131

Step 3.7 Flash

Stepfun Release: 2026-05-29 Tested on: 2026-08-14 02:45 stepfun/step-3.7-flash::high
198B total (11B active)MoEOpen source
(high) (medium) (low)

Summary

Step 3.7 Flash scores 6.8 on AI BENCHY and ranks #131. It has 10.0 reliability, a 60.6% pass rate, $1.229 total cost, and 70.10s average response time.

What makes Step 3.7 Flash unique: It stands out most in Combined, where it ranks #1, while Puzzle Solving is its weakest area at #17.

Model facts

Researched on 2026-08-12

Reported
Parameters
198B total (11B active)
Architecture
MoE
Availability
Open source
License
Apache-2.0

Includes the vendor-reported vision component in the total.

Parameter source Availability source

Score

6.8

Consistency

8.4

Reliability

10.0

Total Cost (Current Price)

$1.229

Total Output Tokens

1,050,900

Total Input Tokens

98,700

Input Price

$0.200 / 1M

Output Price

$1.150 / 1M

Tests Correct

Wrong Tests: 11

Attempt pass rate: 60.6%

Flaky tests

4

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

Response Time (avg)

70.10s

Response Time (max): 364.99s

Response Time (total): 1542.14s

Wrong answer: 7 No answer: 3 Invalid tool call: 1

Hamster playing table tennis

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

#131 Step 3.7 Flash

high
Cost
$0.007
Time
63.6s
Tokens
6,030 tok

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-08-14 02:45 Re-test 6.8 10.0 $1.229 Current run
2026-07-16 22:46 New test added 6.9 10.0 $1.207 Compare
2026-06-04 14:10 New test added 7.0 10.0 $1.148 Compare
2026-05-29 11:53 Initial run 7.1 9.9 $0.960 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
2026-08-14 12:51 $0.200 / 1M $1.150 / 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 4.0 6.0
Combined 8.7 6.9
Data parsing and extraction 10.0 10.0
Domain specific 3.6 7.2
General Intelligence 5.5 10.0
Instructions following 9.8 10.0
Puzzle Solving 5.3 7.2
Tool Calling 10.0 10.0
Trivia 3.0 10.0

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