Model comparison
DeepSeek V4 Flash (High) vs Grok Code Fast 1
Head-to-head evidence from 12 shared benchmark results across 5 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: DeepSeek V4 Flash (High) #92 (Estimated); Grok Code Fast 1 #180 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. DeepSeek V4 Flash (High) and Grok Code Fast 1 share 12 comparable benchmark results. 1 of 8 categories are comparable. 26 results are unique to DeepSeek V4 Flash (High); 0 to Grok Code Fast 1.
Updated July 23, 2026- Shared results
- 12
- DeepSeek V4 Flash (High) only
- 26
- Grok Code Fast 1 only
- 0
- Comparable categories
- 1 / 8
Pick DeepSeek V4 Flash (High) if you want the stronger benchmark profile. Grok Code Fast 1 only becomes the better choice if coding is the priority or you would rather avoid the extra latency and token burn of a reasoning model.
Confidence note. This is a partial-evidence comparison with 12 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
DeepSeek V4 Flash (High) is clearly ahead on the BenchAlign aggregate, 53.95 to 38.64. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Grok Code Fast 1 is also the more expensive model on tokens at $0.20 input / $1.50 output per 1M tokens, versus $0.14 input / $0.28 output per 1M tokens for DeepSeek V4 Flash (High). That is roughly 5.4x on output cost alone. DeepSeek V4 Flash (High) is the reasoning model in the pair, while Grok Code Fast 1 is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. DeepSeek V4 Flash (High) gives you 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 | DeepSeek V4 Flash (High) | Δ | Grok Code Fast 1 |
|---|---|---|---|
| Coding | DeepSeek V4 Flash (High)68.5 | Margin→ 2.3 | Grok Code Fast 170.8 |
| Agentic | DeepSeek V4 Flash (High)55.3 | MarginNo overlap | Grok Code Fast 1Not measured |
| Knowledge | DeepSeek V4 Flash (High)52.1 | MarginNo overlap | Grok Code Fast 1Not measured |
| Math | DeepSeek V4 Flash (High)91.9 | MarginNo overlap | Grok Code Fast 1Not measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
SWE-bench Verified
CodingA 78.6%B 70.8%Winner: DeepSeek V4 Flash (High)Δ 7.8SWE-bench Verified: DeepSeek V4 Flash (High) scored 78.6%; Grok Code Fast 1 scored 70.8%. DeepSeek V4 Flash (High) wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | DeepSeek V4 Flash (High) | Grok Code Fast 1 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | DeepSeek V4 Flash (High)$0.14 input / $0.28 output | Grok Code Fast 1$0.2 input / $1.5 output | DeepSeek V4 Flash (High) has the lower combined listed price. |
| Generation speedtokens per second | DeepSeek V4 Flash (High)Not available | Grok Code Fast 1172 tok/s | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | DeepSeek V4 Flash (High)Not available | Grok Code Fast 12.81 s | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | DeepSeek V4 Flash (High)1M | Grok Code Fast 1256K | DeepSeek V4 Flash (High) lists the larger context window. |
Benchmark Deep Dive
Agentic9 benchmarks
| Benchmark | DeepSeek V4 Flash (High) | Grok Code Fast 1 | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 56.6% | — | Not comparable |
| BrowseCompSource | 53.5% | — | Not comparable |
| HLE w/ toolsSource | 40.3% | — | Not comparable |
| MCP AtlasSource | 67.4% | — | Not comparable |
| ToolathlonSource | 43.5% | — | Not comparable |
| τ²-bench resultsSource | 95.6% | 75.7% | DeepSeek V4 Flash (High) leads |
| AA Agentic IndexSource | 28.2% | — | Not comparable |
| GDPval-AASource | 32.4% | — | Not comparable |
| GDPval-AASource | 1147 | — | Not comparable |
CodingGrok Code Fast 1 wins7 benchmarks
| Benchmark | DeepSeek V4 Flash (High) | Grok Code Fast 1 | Result |
|---|---|---|---|
| CodeforcesSource | 2816.0 | — | Not comparable |
| SWE-bench VerifiedSource | 78.6% | 70.8% | DeepSeek V4 Flash (High) leads |
| SWE-bench ProSource | 52.3% | — | Not comparable |
| SWE MultilingualSource | 70.2% | — | Not comparable |
| Terminal-Bench 2.0Source | 56.6% | — | Not comparable |
| AA-SciCodeSource | 42.0% | 36.2% | DeepSeek V4 Flash (High) leads |
| AA Coding IndexSource | 52.0% | — | Not comparable |
Reasoning4 benchmarks
Knowledge12 benchmarks
| Benchmark | DeepSeek V4 Flash (High) | Grok Code Fast 1 | Result |
|---|---|---|---|
| MMLU-ProSource | 86.4% | — | Not comparable |
| SimpleQASource | 28.9% | — | Not comparable |
| Chinese-SimpleQASource | 73.2% | — | Not comparable |
| GPQASource | 87.4% | — | Not comparable |
| GPQA-DSource | 87.4% | — | Not comparable |
| HLESource | 29.4% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 37.5% | 21.6% | DeepSeek V4 Flash (High) leads |
| AA-GPQA DiamondSource | 86.7% | 72.7% | DeepSeek V4 Flash (High) leads |
| AA-HLESource | 27.8% | 7.5% | DeepSeek V4 Flash (High) leads |
| AA-Omniscience IndexSource | -22.3% | -36.0% | DeepSeek V4 Flash (High) leads |
| AA-Omniscience AccuracySource | 35.5% | 23.8% | DeepSeek V4 Flash (High) leads |
| AA-Omniscience Hallucination RateSource | 89.7% | 78.5% | Grok Code Fast 1 leads |
Math4 benchmarks
Multimodal1 benchmarks
| Benchmark | DeepSeek V4 Flash (High) | Grok Code Fast 1 | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1238 | — | Not comparable |
Inst. Following1 benchmarks
| Benchmark | DeepSeek V4 Flash (High) | Grok Code Fast 1 | Result |
|---|---|---|---|
| AA-IFBenchSource | 73.5% | 41.4% | DeepSeek V4 Flash (High) leads |
Frequently Asked Questions (2)
Which is better, DeepSeek V4 Flash (High) or Grok Code Fast 1?
DeepSeek V4 Flash (High) is ahead on BenchLM's BenchAlign leaderboard, 53.95 to 38.64. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 78.6% and 70.8%.
Which is better for coding, DeepSeek V4 Flash (High) or Grok Code Fast 1?
Grok Code Fast 1 has the edge for coding in this comparison, averaging 70.8 versus 68.5. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
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