Model comparison
Gemini 3 Flash vs Grok 4.3
Head-to-head evidence from 14 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Gemini 3 Flash #49 (Supported); Grok 4.3 #31 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Gemini 3 Flash and Grok 4.3 share 14 comparable benchmark results. 0 of 8 categories are comparable. 5 results are unique to Gemini 3 Flash; 11 to Grok 4.3.
Updated July 23, 2026- Shared results
- 14
- Gemini 3 Flash only
- 5
- Grok 4.3 only
- 11
- Comparable categories
- 0 / 8
Benchmark data for Gemini 3 Flash and Grok 4.3 is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 14 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 Flash is priced at $0.50 input / $3.00 output per 1M tokens, versus $1.25 input / $2.50 output per 1M tokens for Grok 4.3.
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 Flash | Δ | Grok 4.3 |
|---|---|---|---|
| Coding | Gemini 3 FlashNot measured | MarginNo overlap | Grok 4.347.3 |
| Knowledge | Gemini 3 FlashNot measured | MarginNo overlap | Grok 4.342.4 |
| Math | Gemini 3 Flash27.8 | MarginNo overlap | Grok 4.3Not measured |
| Multimodal | Gemini 3 FlashNot measured | MarginNo overlap | Grok 4.378.1 |
| Inst. Following | Gemini 3 FlashNot measured | MarginNo overlap | Grok 4.381.3 |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Gemini 3 Flash | Grok 4.3 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Gemini 3 Flash$0.5 input / $3 output | Grok 4.3$1.25 input / $2.5 output | Gemini 3 Flash has the lower combined listed price. |
| Generation speedtokens per second | Gemini 3 Flash159 tok/s | Grok 4.3209 tok/s | Grok 4.3 has the higher measured throughput. |
| First-answer latencyseconds to first token | Gemini 3 Flash1.19 s | Grok 4.312.36 s | Gemini 3 Flash reaches the first token sooner. |
| Context windowmaximum listed tokens | Gemini 3 Flash1M | Grok 4.31M | Listed context windows are equal. |
Benchmark Deep Dive
Agentic9 benchmarks
| Benchmark | Gemini 3 Flash | Grok 4.3 | Result |
|---|---|---|---|
| Claw-EvalSource | 49.2% | — | Not comparable |
| τ²-bench resultsSource | 43.3% | 97.7% | Grok 4.3 leads |
| Gert LabsSource | 56.63% | 43.86% | Gemini 3 Flash leads |
| JobBenchSource | 11.4% | — | Not comparable |
| GDPval-AASource | — | 29.2% | Not comparable |
| AA Agentic IndexSource | — | 24.1% | Not comparable |
| APEX-Agents-AASource | — | 17.0% | Not comparable |
| GDPval-AASource | — | 1085 | Not comparable |
| ResearchClawBenchSource | — | 12.4% | Not comparable |
Coding4 benchmarks
Reasoning2 benchmarks
Knowledge8 benchmarks
| Benchmark | Gemini 3 Flash | Grok 4.3 | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 27.4% | 37.6% | Grok 4.3 leads |
| AA-GPQA DiamondSource | 81.2% | 90.1% | Grok 4.3 leads |
| AA-HLESource | 14.1% | 35.0% | Grok 4.3 leads |
| AA-Omniscience IndexSource | -3.6% | 18.3% | Grok 4.3 leads |
| AA-Omniscience AccuracySource | 45.5% | 34.6% | Gemini 3 Flash leads |
| AA-Omniscience Hallucination RateSource | 90.2% | 25.0% | Grok 4.3 leads |
| GPQASource | — | 90.1% | Not comparable |
| HLESource | — | 35% | Not comparable |
Math2 benchmarks
Multimodal3 benchmarks
Frequently Asked Questions (3)
Can I compare Gemini 3 Flash and Grok 4.3 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 Flash and Grok 4.3 today?
Gemini 3 Flash: $0.50 input / $3.00 output per 1M tokens Grok 4.3: $1.25 input / $2.50 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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