#122 Step 3.5 Flash
medium- Cost
- $0.008
- Time
- 277.1s
- Tokens
- 23,695 tok
Stepfun
Release: 2026-02-01
Tested on: 2026-07-16 23:25
stepfun/step-3.5-flash::medium
196B total (11B active)MoEOpen source
(medium)
(none)
Summary
Step 3.5 Flash scores 6.0 on AI BENCHY and ranks #122. It has 9.2 reliability, a 51.5% pass rate, $0.108 total cost, and 174.22s average response time.
What makes Step 3.5 Flash unique: It stands out most in Data parsing and extraction, where it ranks #1, while Coding is its weakest area at #18.
Model facts
Researched on 2026-08-12
- Parameters
- 196B total (11B active)
- Architecture
- MoE
- Availability
- Open source
- License
- Apache-2.0
6.0
Consistency
9.0
9.2
Total Output Tokens
402,554
Total Input Tokens
65,707
Input Price
$0.100 / 1M
Output Price
$0.300 / 1M
Flaky tests
1
Flaky tests had mixed outcomes across runs (at least one pass and one fail).
Hamster playing table tennis
Prompt: Create a detailed SVG illustration of a hamster playing table tennis.
Run history
| Tested on | Score | Reliability | Tests Correct | Total Cost | Compare |
|---|---|---|---|---|---|
| 2026-08-14 02:50 Re-test | 5.9 | 10.0 | $0.132 ↑ | Compare | |
| 2026-07-16 23:25 New test added | 6.0 | 9.2 | $0.108 ↑ | Current run | |
| 2026-06-04 14:12 New test added | 7.2 | 8.9 | $0.070 ↑ | Compare | |
| 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.
Run comparison
| Run | Benchmark coverage | Score | Consistency | Reliability | Tests Correct | Flaky tests | Total Output Tokens | Total Input Tokens | Total Cost | Response Time (avg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-07-16 23:25 · New test added | 63/63 attempts | 6.0 | 9.0 | 9.2 | 11/21 | 1 | 402,554 | 65,707 | $0.108 | 174.22s |
| 2026-05-22 00:30 · Suite changed | 57/57 attempts | 7.4 | 8.7 | 9.3 | 11/19 | 3 | 263,806 | 0 | $0.015 | 43.29s |
| Difference | — | -1.3 | +0.3 | -0.1 | 0 | -2 | +138748 | +65707 | +$0.093 | +130934ms |
Benchmark coverage differs: 63/63 attempts (Target: 3 repeats per test) versus 57/57 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 15:40 | $0.090 / 1M | $0.300 / 1M |
| 2026-06-30 21:25 | $0.100 / 1M | $0.300 / 1M |
Charts
Choose the first model, then click a second model to open a side-by-side page.
Top Models by Score
Score vs Total Cost
Response Time (avg)
Score vs Response Time (avg)
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 | 2.4 | 5.2 | |
| Combined | 6.5 | 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 |