Model comparison
DeepSeek V3.1 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: DeepSeek V3.1 #95 (Supported); Grok Code Fast 1 #180 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. DeepSeek V3.1 and Grok Code Fast 1 share 11 comparable benchmark results. 0 of 8 categories are comparable. 1 result is unique to DeepSeek V3.1; 1 to Grok Code Fast 1.
Updated July 20, 2026- Shared results
- 11
- DeepSeek V3.1 only
- 1
- Grok Code Fast 1 only
- 1
- Comparable categories
- 0 / 8
Benchmark data for DeepSeek V3.1 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.
Grok Code Fast 1 is priced at $0.20 input / $1.50 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for DeepSeek V3.1. Grok Code Fast 1 has the larger context window at 256K, compared with 128K for DeepSeek V3.1.
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 | DeepSeek V3.1 | Δ | Grok Code Fast 1 |
|---|---|---|---|
| Coding | DeepSeek V3.1Not measured | MarginNo overlap | Grok Code Fast 170.8 |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | DeepSeek V3.1 | Grok Code Fast 1 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | DeepSeek V3.1$0 input / $0 output | Grok Code Fast 1$0.2 input / $1.5 output | DeepSeek V3.1 has the lower combined listed price. |
| Generation speedtokens per second | DeepSeek V3.1Not available | Grok Code Fast 1172 tok/s | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | DeepSeek V3.1Not available | Grok Code Fast 12.81 s | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | DeepSeek V3.1128K | Grok Code Fast 1256K | Grok Code Fast 1 lists the larger context window. |
Benchmark Deep Dive
Agentic1 benchmarks
| Benchmark | DeepSeek V3.1 | Grok Code Fast 1 | Result |
|---|---|---|---|
| τ²-bench resultsSource | 34.8% | 75.7% | Grok Code Fast 1 leads |
Coding2 benchmarks
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | DeepSeek V3.1 | Grok Code Fast 1 | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 21.1% | 21.6% | Grok Code Fast 1 leads |
| AA-GPQA DiamondSource | 73.5% | 72.7% | DeepSeek V3.1 leads |
| AA-HLESource | 6.3% | 7.5% | Grok Code Fast 1 leads |
| AA-Omniscience IndexSource | -41.1% | -36.0% | Grok Code Fast 1 leads |
| AA-Omniscience AccuracySource | 23.1% | 23.8% | Grok Code Fast 1 leads |
| AA-Omniscience Hallucination RateSource | 83.5% | 78.5% | Grok Code Fast 1 leads |
Multimodal1 benchmarks
| Benchmark | DeepSeek V3.1 | Grok Code Fast 1 | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1155 | — | Not comparable |
Inst. Following1 benchmarks
| Benchmark | DeepSeek V3.1 | Grok Code Fast 1 | Result |
|---|---|---|---|
| AA-IFBenchSource | 37.8% | 41.4% | Grok Code Fast 1 leads |
Frequently Asked Questions (3)
Can I compare DeepSeek V3.1 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 DeepSeek V3.1 and Grok Code Fast 1 today?
DeepSeek V3.1: $0.00 input / $0.00 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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