Model comparison
Gemini 3.1 Flash-Lite vs Grok Code Fast 1
Head-to-head evidence from 11 shared benchmark results across 5 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Gemini 3.1 Flash-Lite #111 (Supported); Grok Code Fast 1 #180 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Gemini 3.1 Flash-Lite and Grok Code Fast 1 share 11 comparable benchmark results. 0 of 8 categories are comparable. 9 results are unique to Gemini 3.1 Flash-Lite; 1 to Grok Code Fast 1.
Updated July 20, 2026- Shared results
- 11
- Gemini 3.1 Flash-Lite only
- 9
- Grok Code Fast 1 only
- 1
- Comparable categories
- 0 / 8
Benchmark data for Gemini 3.1 Flash-Lite and Grok Code Fast 1 is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 11 shared benchmark results across 5 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 Flash-Lite has the larger context window at 1M, compared with 256K for Grok Code Fast 1.
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 Flash-Lite | Δ | Grok Code Fast 1 |
|---|---|---|---|
| Coding | Gemini 3.1 Flash-LiteNot measured | MarginNo overlap | Grok Code Fast 170.8 |
| Multimodal | Gemini 3.1 Flash-Lite73.2 | MarginNo overlap | Grok Code Fast 1Not measured |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Gemini 3.1 Flash-Lite | Grok Code Fast 1 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Gemini 3.1 Flash-Lite$0.25 input / $1.5 output | Grok Code Fast 1$0.2 input / $1.5 output | Grok Code Fast 1 has the lower combined listed price. |
| Generation speedtokens per second | Gemini 3.1 Flash-Lite205 tok/s | Grok Code Fast 1172 tok/s | Gemini 3.1 Flash-Lite has the higher measured throughput. |
| First-answer latencyseconds to first token | Gemini 3.1 Flash-Lite7.50 s | Grok Code Fast 12.81 s | Grok Code Fast 1 reaches the first token sooner. |
| Context windowmaximum listed tokens | Gemini 3.1 Flash-Lite1M | Grok Code Fast 1256K | Gemini 3.1 Flash-Lite lists the larger context window. |
Benchmark Deep Dive
Agentic6 benchmarks
Coding4 benchmarks
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | Gemini 3.1 Flash-Lite | Grok Code Fast 1 | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 25.0% | 21.6% | Gemini 3.1 Flash-Lite leads |
| AA-GPQA DiamondSource | 82.2% | 72.7% | Gemini 3.1 Flash-Lite leads |
| AA-HLESource | 16.2% | 7.5% | Gemini 3.1 Flash-Lite leads |
| AA-Omniscience IndexSource | -15.5% | -36.0% | Gemini 3.1 Flash-Lite leads |
| AA-Omniscience AccuracySource | 36.4% | 23.8% | Gemini 3.1 Flash-Lite leads |
| AA-Omniscience Hallucination RateSource | 81.6% | 78.5% | Grok Code Fast 1 leads |
Multimodal2 benchmarks
Inst. Following1 benchmarks
| Benchmark | Gemini 3.1 Flash-Lite | Grok Code Fast 1 | Result |
|---|---|---|---|
| AA-IFBenchSource | 77.2% | 41.4% | Gemini 3.1 Flash-Lite leads |
Frequently Asked Questions (3)
Can I compare Gemini 3.1 Flash-Lite and Grok Code Fast 1 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 Flash-Lite and Grok Code Fast 1 today?
Gemini 3.1 Flash-Lite: $0.25 input / $1.50 output per 1M tokens Grok Code Fast 1: $0.20 input / $1.50 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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