Model comparison
Qwen3.5 397B (Reasoning) vs Step 3.7 Flash
Head-to-head evidence from 18 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
BenchAlign evidence: Qwen3.5 397B (Reasoning) estimated; Step 3.7 Flash estimated. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Qwen3.5 397B (Reasoning) and Step 3.7 Flash share 18 comparable benchmark results. 0 of 8 categories are comparable. 0 results are unique to Qwen3.5 397B (Reasoning); 12 to Step 3.7 Flash.
Updated July 16, 2026- Shared results
- 18
- Qwen3.5 397B (Reasoning) only
- 0
- Step 3.7 Flash only
- 12
- Comparable categories
- 0 / 8
Benchmark data for Qwen3.5 397B (Reasoning) and Step 3.7 Flash is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 18 shared benchmark results across 6 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.
Qwen3.5 397B (Reasoning) is priced at $0.60 input / $3.60 output per 1M tokens, versus $0.20 input / $1.15 output per 1M tokens for Step 3.7 Flash. Step 3.7 Flash has the larger context window at 256K, compared with 128K for Qwen3.5 397B (Reasoning).
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Qwen3.5 397B (Reasoning) | Δ | Step 3.7 Flash |
|---|---|---|---|
| Agentic | Qwen3.5 397B (Reasoning)Not measured | MarginNo overlap | Step 3.7 Flash66.4 |
| Coding | Qwen3.5 397B (Reasoning)Not measured | MarginNo overlap | Step 3.7 Flash56.3 |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Qwen3.5 397B (Reasoning) | Step 3.7 Flash | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Qwen3.5 397B (Reasoning)$0.6 input / $3.6 output | Step 3.7 Flash$0.2 input / $1.15 output | Step 3.7 Flash has the lower combined listed price. |
| Generation speedtokens per second | Qwen3.5 397B (Reasoning)Not available | Step 3.7 FlashNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Qwen3.5 397B (Reasoning)Not available | Step 3.7 FlashNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Qwen3.5 397B (Reasoning)128K | Step 3.7 Flash256K | Step 3.7 Flash lists the larger context window. |
Benchmark Deep Dive
Agentic12 benchmarks
| Benchmark | Qwen3.5 397B (Reasoning) | Step 3.7 Flash | Result |
|---|---|---|---|
| AA Agentic IndexSource | 19.9% | 21.5% | Step 3.7 Flash leads |
| APEX-Agents-AASource | 15.3% | 14.8% | Qwen3.5 397B (Reasoning) leads |
| τ²-bench resultsSource | 95.6% | 98.5% | Step 3.7 Flash leads |
| GDPval-AASource | 23.1% | 25.9% | Step 3.7 Flash leads |
| GDPval-AASource | 962 | 1017 | Step 3.7 Flash leads |
| Terminal-Bench 2.0Source | — | 59.5% | Not comparable |
| BrowseCompSource | — | 75.8% | Not comparable |
| DeepSearchQASource | — | 92.8% | Not comparable |
| ToolathlonSource | — | 49.5% | Not comparable |
| Claw-EvalSource | — | 67.1% | Not comparable |
| HLE w/ toolsSource | — | 47.2% | Not comparable |
| Gert LabsSource | — | 51.57% | Not comparable |
Coding5 benchmarks
| Benchmark | Qwen3.5 397B (Reasoning) | Step 3.7 Flash | Result |
|---|---|---|---|
| AA Coding IndexSource | 48.2% | 39.6% | Qwen3.5 397B (Reasoning) leads |
| Terminal-Bench HardSource | 40.9% | 35.6% | Qwen3.5 397B (Reasoning) leads |
| AA-SciCodeSource | 42.0% | 40.0% | Qwen3.5 397B (Reasoning) leads |
| SWE-bench ProSource | — | 56.3% | Not comparable |
| Terminal-Bench 2.0Source | — | 59.5% | Not comparable |
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | Qwen3.5 397B (Reasoning) | Step 3.7 Flash | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 33.7% | 30.3% | Qwen3.5 397B (Reasoning) leads |
| AA-GPQA DiamondSource | 89.3% | 80.9% | Qwen3.5 397B (Reasoning) leads |
| AA-HLESource | 27.3% | 19.9% | Qwen3.5 397B (Reasoning) leads |
| AA-Omniscience IndexSource | -29.8% | -37.5% | Qwen3.5 397B (Reasoning) leads |
| AA-Omniscience AccuracySource | 31.4% | 25.4% | Qwen3.5 397B (Reasoning) leads |
| AA-Omniscience Hallucination RateSource | 89.1% | 84.4% | Step 3.7 Flash leads |
Multimodal4 benchmarks
Inst. Following1 benchmarks
| Benchmark | Qwen3.5 397B (Reasoning) | Step 3.7 Flash | Result |
|---|---|---|---|
| AA-IFBenchSource | 78.8% | 67.3% | Qwen3.5 397B (Reasoning) leads |
Frequently Asked Questions (3)
Can I compare Qwen3.5 397B (Reasoning) and Step 3.7 Flash on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
What data is available for Qwen3.5 397B (Reasoning) and Step 3.7 Flash today?
Qwen3.5 397B (Reasoning): $0.60 input / $3.60 output per 1M tokens Step 3.7 Flash: $0.20 input / $1.15 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
Related Comparisons
Explore More
The AI models change fast. We track them for you.
A weekly brief for engineers and researchers covering new models, ranking shifts, and pricing changes.
Free. No spam. Unsubscribe anytime.