Model comparison
Gemini 3.1 Pro vs Step 3.7 Flash
Head-to-head evidence from 23 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
BenchAlign evidence: Gemini 3.1 Pro estimated; Step 3.7 Flash estimated. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Gemini 3.1 Pro and Step 3.7 Flash share 23 comparable benchmark results. 0 of 8 categories are comparable. 25 results are unique to Gemini 3.1 Pro; 7 to Step 3.7 Flash.
Updated July 16, 2026- Shared results
- 23
- Gemini 3.1 Pro only
- 25
- Step 3.7 Flash only
- 7
- Comparable categories
- 0 / 8
Benchmark data for Gemini 3.1 Pro and Step 3.7 Flash is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 23 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.
Gemini 3.1 Pro is priced at $2.00 input / $12.00 output per 1M tokens, versus $0.20 input / $1.15 output per 1M tokens for Step 3.7 Flash. Gemini 3.1 Pro has the larger context window at 1M, compared with 256K for Step 3.7 Flash.
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 3.1 Pro | Δ | Step 3.7 Flash |
|---|---|---|---|
| Agentic | Gemini 3.1 ProNot measured | MarginNo overlap | Step 3.7 Flash66.4 |
| Coding | Gemini 3.1 ProNot measured | MarginNo overlap | Step 3.7 Flash56.3 |
| Reasoning | Gemini 3.1 Pro77.1 | MarginNo overlap | Step 3.7 FlashNot measured |
| Math | Gemini 3.1 Pro31.8 | MarginNo overlap | Step 3.7 FlashNot measured |
| Multimodal | Gemini 3.1 Pro82.6 | MarginNo overlap | Step 3.7 FlashNot measured |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Gemini 3.1 Pro | Step 3.7 Flash | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Gemini 3.1 Pro$2 input / $12 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 | Gemini 3.1 Pro109 tok/s | Step 3.7 FlashNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Gemini 3.1 Pro29.71 s | Step 3.7 FlashNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Gemini 3.1 Pro1M | Step 3.7 Flash256K | Gemini 3.1 Pro lists the larger context window. |
Benchmark Deep Dive
Agentic18 benchmarks
| Benchmark | Gemini 3.1 Pro | Step 3.7 Flash | Result |
|---|---|---|---|
| Claw-EvalSource | 57.8% | 67.1% | Step 3.7 Flash leads |
| DeepSearchQASource | 69.7% | 92.8% | Step 3.7 Flash leads |
| τ²-bench resultsSource | 95.6% | 98.5% | Step 3.7 Flash leads |
| AA Agentic IndexSource | 21.4% | 21.5% | Step 3.7 Flash leads |
| APEX-Agents-AASource | 32.0% | 14.8% | Gemini 3.1 Pro leads |
| GDPval-AASource | 23.2% | 25.9% | Step 3.7 Flash leads |
| GDPval-AASource | 965 | 1017 | Step 3.7 Flash leads |
| Gert LabsSource | 49.91% | 51.57% | Step 3.7 Flash leads |
| ResearchClawBenchSource | 13.3% | — | Not comparable |
| AA AutomationBenchSource | 37.5% | — | Not comparable |
| AA EnterpriseOps-GymSource | 42.2% | — | Not comparable |
| AA Harvey LABSource | 0.0% | — | Not comparable |
| AA ITBenchSource | 30.3% | — | Not comparable |
| AA Tau3 BankingSource | 16.5% | — | Not comparable |
| Terminal-Bench 2.0Source | — | 59.5% | Not comparable |
| BrowseCompSource | — | 75.8% | Not comparable |
| ToolathlonSource | — | 49.5% | Not comparable |
| HLE w/ toolsSource | — | 47.2% | Not comparable |
Coding9 benchmarks
| Benchmark | Gemini 3.1 Pro | Step 3.7 Flash | Result |
|---|---|---|---|
| LiveCodeBench ProSource | 82.9% | — | Not comparable |
| React Native EvalsSource | 78.9% | — | Not comparable |
| Vibe Code BenchSource | 32.03% | — | Not comparable |
| AA Coding IndexSource | 68.8% | 39.6% | Gemini 3.1 Pro leads |
| Terminal-Bench HardSource | 53.8% | 35.6% | Gemini 3.1 Pro leads |
| AA-SciCodeSource | 58.9% | 40.0% | Gemini 3.1 Pro leads |
| AA Terminal-Bench 2.1Source | 73.8% | — | Not comparable |
| SWE-bench ProSource | — | 56.3% | Not comparable |
| Terminal-Bench 2.0Source | — | 59.5% | Not comparable |
Reasoning3 benchmarks
Knowledge10 benchmarks
| Benchmark | Gemini 3.1 Pro | Step 3.7 Flash | Result |
|---|---|---|---|
| GPQA-DSource | 94.3% | — | Not comparable |
| HLE w/o toolsSource | 45.4% | — | Not comparable |
| HealthBench HardSource | 20.6% | — | Not comparable |
| MedXpertQA (Text)Source | 71.5% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 46.5% | 30.3% | Gemini 3.1 Pro leads |
| AA-GPQA DiamondSource | 94.1% | 80.9% | Gemini 3.1 Pro leads |
| AA-HLESource | 44.7% | 19.9% | Gemini 3.1 Pro leads |
| AA-Omniscience IndexSource | 32.9% | -37.5% | Gemini 3.1 Pro leads |
| AA-Omniscience AccuracySource | 55.3% | 25.4% | Gemini 3.1 Pro leads |
| AA-Omniscience Hallucination RateSource | 49.9% | 84.4% | Gemini 3.1 Pro leads |
Math2 benchmarks
Multilingual1 benchmarks
| Benchmark | Gemini 3.1 Pro | Step 3.7 Flash | Result |
|---|---|---|---|
| AA Global-MMLU-LiteSource | 93.2% | — | Not comparable |
Multimodal11 benchmarks
| Benchmark | Gemini 3.1 Pro | Step 3.7 Flash | Result |
|---|---|---|---|
| MMMU-ProSource | 83.9% | — | Not comparable |
| CharXivSource | 80.2% | — | Not comparable |
| ERQASource | 69.4% | — | Not comparable |
| SimpleVQASource | 72.4% | 79.2% | Step 3.7 Flash leads |
| ScreenSpot ProSource | 84.4% | — | Not comparable |
| ZeroBenchSource | 29.0% | — | Not comparable |
| MedXpertQA (MM)Source | 81.3% | — | Not comparable |
| GDPval-AASource | 1320 | — | Not comparable |
| AA-MMMU-ProSource | 82.4% | 75.3% | Gemini 3.1 Pro leads |
| Design Arena WebsiteSource | 1285 | 1218 | Gemini 3.1 Pro leads |
| V*Source | — | 95.3% | Not comparable |
Inst. Following1 benchmarks
| Benchmark | Gemini 3.1 Pro | Step 3.7 Flash | Result |
|---|---|---|---|
| AA-IFBenchSource | 77.1% | 67.3% | Gemini 3.1 Pro leads |
Frequently Asked Questions (3)
Can I compare Gemini 3.1 Pro 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 Gemini 3.1 Pro and Step 3.7 Flash today?
Gemini 3.1 Pro: $2.00 input / $12.00 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.
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