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#221

Qwen3.5 Plus 2026-02-15

Qwen Release: 2026-02-15 Tested on: 2026-10-01 09:33 qwen/qwen3.5-plus-02-15::none
~397B total (~17B active)MoEClosedEstimated
(medium) (none)

Summary

Qwen3.5 Plus 2026-02-15 scores 6.3 on AI BENCHY and ranks #221. It has 10.0 reliability, a 52.2% pass rate, $0.176 total cost, and 20.07s average response time.

What makes Qwen3.5 Plus 2026-02-15 unique: It stands out most in Domain specific, where it ranks #1, while Coding is its weakest area at #14.

Model facts

Researched on 2026-08-12

Estimated
Parameters
~397B total (~17B active)
Architecture
MoE
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. Estimate from the released 397B/A17B family architecture.

Parameter source Availability source

Score

6.3

Consistency

9.1

Reliability

10.0

Total Cost (Current Price)

$0.176

Total Output Tokens

53,060

Total Input Tokens

346,064

Input Price

$0.260 / 1M

Output Price

$1.560 / 1M

Cache Read Price

N/A

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: 12

Attempt pass rate: 52.2%

Flaky tests

3

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

Response Time (avg)

20.07s

Response Time (max): 183.50s

Response Time (total): 341.27s

Wrong answer: 11 Invalid tool call: 1

Hamster playing table tennis

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

#221 Qwen3.5 Plus 2026-02-15

none
Cost
$0.012
Time
153.2s
Tokens
7,787 tok

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-10-01 09:33 Re-test 6.3 10.0 $0.176 Current run
2026-07-16 21:22 New test added 6.4 10.0 $0.073 ↓ Compare
2026-06-04 13:10 New test added 6.3 10.0 $0.016 ↓ Compare
2026-05-21 23:45 Suite changed 6.4 10.0 $0.018 Compare
2026-04-11 01:19 First recorded run 6.8 N/A $0.017 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 09:33 · Current run69/69 attempts6.39.110.011/23353,060346,064$0.17620.07s
2026-05-21 23:45 · Suite changed60/60 attempts6.49.310.09/2022,4960$0.0182.41s
Difference—-0.1-0.20.0+2+1+50564+346064+$0.158+17661ms

Benchmark coverage differs: 69/69 attempts (Target: 3 repeats per test) versus 60/60 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.

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

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Category Breakdown

Category Score Consistency Tests Correct
Agentic 5.2 3.2
Anti-AI Tricks 4.8 10.0
Coding 4.3 7.9
Combined 6.5 10.0
Data parsing and extraction 10.0 10.0
Domain specific 7.7 10.0
General Intelligence 4.4 3.0
Instructions following 10.0 10.0
Puzzle Solving 7.7 10.0
Tool Calling 10.0 10.0
Trivia 3.0 10.0

Compared models