Model comparison
Gemini 3.6 Flash vs Grok 4.5
Head-to-head evidence from 17 shared benchmark results across 5 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Gemini 3.6 Flash unranked (Not scored); Grok 4.5 #7 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Gemini 3.6 Flash and Grok 4.5 share 17 comparable benchmark results. 1 of 8 categories are comparable. 2 results are unique to Gemini 3.6 Flash; 11 to Grok 4.5.
Updated July 21, 2026- Shared results
- 17
- Gemini 3.6 Flash only
- 2
- Grok 4.5 only
- 11
- Comparable categories
- 1 / 8
Treat this as a split decision. Gemini 3.6 Flash makes more sense if you need the larger 1M context window; Grok 4.5 is the better fit if agentic is the priority or you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 17 shared benchmark results across 5 evidence categories; 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 3.6 Flash and Grok 4.5 finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.
Gemini 3.6 Flash is also the more expensive model on tokens at $1.50 input / $7.50 output per 1M tokens, versus $2.00 input / $6.00 output per 1M tokens for Grok 4.5. Gemini 3.6 Flash gives you the larger context window at 1M, compared with 500K for Grok 4.5.
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 3.6 Flash | Δ | Grok 4.5 |
|---|---|---|---|
| Agentic | Gemini 3.6 Flash83.0 | Margin→ 0.3 | Grok 4.583.3 |
| Coding | Gemini 3.6 FlashNot measured | MarginNo overlap | Grok 4.564.7 |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Gemini 3.6 Flash | Grok 4.5 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Gemini 3.6 Flash$1.5 input / $7.5 output | Grok 4.5$2 input / $6 output | Grok 4.5 has the lower combined listed price. |
| Generation speedtokens per second | Gemini 3.6 FlashNot available | Grok 4.5Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Gemini 3.6 FlashNot available | Grok 4.5Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Gemini 3.6 Flash1M | Grok 4.5500K | Gemini 3.6 Flash lists the larger context window. |
Benchmark Deep Dive
AgenticGrok 4.5 wins12 benchmarks
| Benchmark | Gemini 3.6 Flash | Grok 4.5 | Result |
|---|---|---|---|
| OSWorld-VerifiedSource | 83% | — | Not comparable |
| GDPval-AASource | 1421 | 1535 | Grok 4.5 leads |
| AA Agentic IndexSource | 38.7% | 45.7% | Grok 4.5 leads |
| GDPval-AASource | 46.1% | 51.7% | Grok 4.5 leads |
| AA BriefcaseSource | 961 | 1323 | Grok 4.5 leads |
| AA Tau3 BankingSource | 24.5% | 32.6% | Grok 4.5 leads |
| aaTerminalBench21Source | 77.5% | 81.6% | Grok 4.5 leads |
| Terminal-Bench 2.0Source | — | 83.3% | Not comparable |
| deepSweSource | — | 53% | Not comparable |
| AA AutomationBenchSource | — | 51.4% | Not comparable |
| AA EnterpriseOps-GymSource | — | 40.8% | Not comparable |
| AA Harvey LABSource | — | 92.4% | Not comparable |
Coding8 benchmarks
| Benchmark | Gemini 3.6 Flash | Grok 4.5 | Result |
|---|---|---|---|
| deepSweSource | 49% | — | Not comparable |
| AA Coding IndexSource | 69.2% | 72.5% | Grok 4.5 leads |
| AA-SciCodeSource | 52.7% | 54.1% | Grok 4.5 leads |
| SWE-bench ProSource | — | 64.7% | Not comparable |
| SWE MultilingualSource | — | 78% | Not comparable |
| Terminal-Bench 2.0Source | — | 83.3% | Not comparable |
| cursorBench32Source | — | 66.7% | Not comparable |
| VulcanBench v3Source | — | 91.3% | Not comparable |
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | Gemini 3.6 Flash | Grok 4.5 | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 50.1% | 53.8% | Grok 4.5 leads |
| AA-GPQA DiamondSource | 92.8% | 93.1% | Grok 4.5 leads |
| AA-HLESource | 38.3% | 40.3% | Grok 4.5 leads |
| AA-Omniscience IndexSource | 23.5% | 26.4% | Grok 4.5 leads |
| AA-Omniscience AccuracySource | 50.2% | 52.1% | Grok 4.5 leads |
| AA-Omniscience Hallucination RateSource | 53.5% | 53.5% | Tie |
Frequently Asked Questions (2)
Which is better, Gemini 3.6 Flash or Grok 4.5?
Gemini 3.6 Flash and Grok 4.5 are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.
Which is better for agentic tasks, Gemini 3.6 Flash or Grok 4.5?
Grok 4.5 has the edge for agentic tasks in this comparison, averaging 83.3 versus 83. Inside this category, AA Briefcase is the benchmark that creates the most daylight between them.
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