Model comparison
Gemini 3 Pro Deep Think vs Qwen3.5 397B
Head-to-head evidence from 1 shared benchmark result across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Gemini 3 Pro Deep Think #41 (Estimated); Qwen3.5 397B #71 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Gemini 3 Pro Deep Think and Qwen3.5 397B share 1 comparable benchmark result. 1 of 8 categories are comparable. 1 result is unique to Gemini 3 Pro Deep Think; 54 to Qwen3.5 397B.
Updated July 20, 2026- Shared results
- 1
- Gemini 3 Pro Deep Think only
- 1
- Qwen3.5 397B only
- 54
- Comparable categories
- 1 / 8
Pick Gemini 3 Pro Deep Think if you want the stronger benchmark profile. Qwen3.5 397B only becomes the better choice if reasoning is the priority or you would rather avoid the extra latency and token burn of a reasoning model.
Confidence note. This is a partial-evidence comparison with 1 shared benchmark result across 1 evidence category; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Gemini 3 Pro Deep Think is clearly ahead on the BenchAlign aggregate, 61.31 to 57.01. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Gemini 3 Pro Deep Think is the reasoning model in the pair, while Qwen3.5 397B is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Gemini 3 Pro Deep Think gives you the larger context window at 2M, compared with 128K for Qwen3.5 397B.
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 | Gemini 3 Pro Deep Think | Δ | Qwen3.5 397B |
|---|---|---|---|
| Reasoning | Gemini 3 Pro Deep Think45.1 | Margin→ 18.1 | Qwen3.5 397B63.2 |
| Agentic | Gemini 3 Pro Deep ThinkNot measured | MarginNo overlap | Qwen3.5 397B56.5 |
| Coding | Gemini 3 Pro Deep ThinkNot measured | MarginNo overlap | Qwen3.5 397B66.5 |
| Knowledge | Gemini 3 Pro Deep ThinkNot measured | MarginNo overlap | Qwen3.5 397B56.6 |
| Math | Gemini 3 Pro Deep ThinkNot measured | MarginNo overlap | Qwen3.5 397B90.6 |
| Multilingual | Gemini 3 Pro Deep ThinkNot measured | MarginNo overlap | Qwen3.5 397B84.7 |
| Multimodal | Gemini 3 Pro Deep ThinkNot measured | MarginNo overlap | Qwen3.5 397B79.6 |
| Inst. Following | Gemini 3 Pro Deep ThinkNot measured | MarginNo overlap | Qwen3.5 397B92.6 |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Gemini 3 Pro Deep Think | Qwen3.5 397B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Gemini 3 Pro Deep ThinkNot available | Qwen3.5 397B$0.6 input / $3.6 output | A complete price comparison is not available. |
| Generation speedtokens per second | Gemini 3 Pro Deep ThinkNot available | Qwen3.5 397B96 tok/s | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Gemini 3 Pro Deep ThinkNot available | Qwen3.5 397B2.44 s | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Gemini 3 Pro Deep Think2M | Qwen3.5 397B128K | Gemini 3 Pro Deep Think lists the larger context window. |
Benchmark Deep Dive
Agentic18 benchmarks
| Benchmark | Gemini 3 Pro Deep Think | Qwen3.5 397B | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | — | 52.5% | Not comparable |
| BrowseCompSource | — | 62% | Not comparable |
| Claw-EvalSource | — | 56.8% | Not comparable |
| QwenClawBenchSource | — | 51.8% | Not comparable |
| τ³-bench resultsSource | — | 68.4% | Not comparable |
| VITA-BenchSource | — | 43.7% | Not comparable |
| DeepPlanningSource | — | 37.6% | Not comparable |
| ToolathlonSource | — | 36.3% | Not comparable |
| MCP AtlasSource | — | 46.1% | Not comparable |
| MCP-TasksSource | — | 74.2% | Not comparable |
| WideResearchSource | — | 74.0% | Not comparable |
| τ²-bench resultsSource | — | 95.6% | Not comparable |
| Gert LabsSource | — | 46.76% | Not comparable |
| ResearchClawBenchSource | — | 14.2% | Not comparable |
| AA Agentic IndexSource | — | 19.9% | Not comparable |
| APEX-Agents-AASource | — | 15.3% | Not comparable |
| GDPval-AASource | — | 23.1% | Not comparable |
| GDPval-AASource | — | 962 | Not comparable |
Coding5 benchmarks
ReasoningQwen3.5 397B wins5 benchmarks
Knowledge12 benchmarks
| Benchmark | Gemini 3 Pro Deep Think | Qwen3.5 397B | Result |
|---|---|---|---|
| GPQASource | — | 88.4% | Not comparable |
| SuperGPQASource | — | 70.4% | Not comparable |
| MMLU-ProSource | — | 87.8% | Not comparable |
| MMLU-ReduxSource | — | 94.9% | Not comparable |
| C-EvalSource | — | 93% | Not comparable |
| HLESource | — | 28.7% | Not comparable |
| Artificial Analysis Intelligence IndexSource | — | 33.7% | Not comparable |
| AA-GPQA DiamondSource | — | 89.3% | Not comparable |
| AA-HLESource | — | 27.3% | Not comparable |
| AA-Omniscience IndexSource | — | -29.8% | Not comparable |
| AA-Omniscience AccuracySource | — | 31.4% | Not comparable |
| AA-Omniscience Hallucination RateSource | — | 89.1% | Not comparable |
Math5 benchmarks
Multilingual2 benchmarks
Multimodal7 benchmarks
Frequently Asked Questions (2)
Which is better, Gemini 3 Pro Deep Think or Qwen3.5 397B?
Gemini 3 Pro Deep Think is ahead on BenchLM's BenchAlign leaderboard, 61.31 to 57.01.
Which is better for reasoning, Gemini 3 Pro Deep Think or Qwen3.5 397B?
Qwen3.5 397B has the edge for reasoning in this comparison, averaging 63.2 versus 45.1. Inside this category, CritPt is the benchmark that creates the most daylight between them.
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