Model comparison
DeepSeek V4 Pro (High) vs Laguna S 2.1
Head-to-head evidence from 4 shared benchmark results across 2 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: DeepSeek V4 Pro (High) #81 (Estimated); Laguna S 2.1 unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. DeepSeek V4 Pro (High) and Laguna S 2.1 share 4 comparable benchmark results. 2 of 8 categories are comparable. 34 results are unique to DeepSeek V4 Pro (High); 2 to Laguna S 2.1.
Updated July 21, 2026- Shared results
- 4
- DeepSeek V4 Pro (High) only
- 34
- Laguna S 2.1 only
- 2
- Comparable categories
- 2 / 8
Treat this as a split decision. DeepSeek V4 Pro (High) makes more sense if coding is the priority; Laguna S 2.1 is the better fit if you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 4 shared benchmark results across 2 evidence categories; 2 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 Pro (High) and Laguna S 2.1 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.
DeepSeek V4 Pro (High) is also the more expensive model on tokens at $0.43 input / $0.87 output per 1M tokens, versus $0.10 input / $0.20 output per 1M tokens for Laguna S 2.1. That is roughly 4.3x on output cost alone.
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 Pro (High) | Δ | Laguna S 2.1 |
|---|---|---|---|
| Coding | DeepSeek V4 Pro (High)69.8 | Margin← 10.4 | Laguna S 2.159.4 |
| Agentic | DeepSeek V4 Pro (High)70.6 | Margin← 0.4 | Laguna S 2.170.2 |
| Knowledge | DeepSeek V4 Pro (High)57.0 | MarginNo overlap | Laguna S 2.1Not measured |
| Math | DeepSeek V4 Pro (High)94.0 | MarginNo overlap | Laguna S 2.1Not measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
Terminal-Bench 2.0
AgenticA 63.3%B 70.2%Winner: Laguna S 2.1Δ 6.9Terminal-Bench 2.0: DeepSeek V4 Pro (High) scored 63.3%; Laguna S 2.1 scored 70.2%. Laguna S 2.1 wins this benchmark. - Source ↗
SWE-bench Pro
CodingA 54.4%B 59.4%Winner: Laguna S 2.1Δ 5SWE-bench Pro: DeepSeek V4 Pro (High) scored 54.4%; Laguna S 2.1 scored 59.4%. Laguna S 2.1 wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | DeepSeek V4 Pro (High) | Laguna S 2.1 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | DeepSeek V4 Pro (High)$0.435 input / $0.87 output | Laguna S 2.1$0.1 input / $0.2 output | Laguna S 2.1 has the lower combined listed price. |
| Generation speedtokens per second | DeepSeek V4 Pro (High)Not available | Laguna S 2.1Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | DeepSeek V4 Pro (High)Not available | Laguna S 2.1Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | DeepSeek V4 Pro (High)1M | Laguna S 2.11M | Listed context windows are equal. |
Benchmark Deep Dive
AgenticDeepSeek V4 Pro (High) wins10 benchmarks
| Benchmark | DeepSeek V4 Pro (High) | Laguna S 2.1 | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 63.3% | 70.2% | Laguna S 2.1 leads |
| BrowseCompSource | 80.4% | — | Not comparable |
| HLE w/ toolsSource | 44.7% | — | Not comparable |
| MCP AtlasSource | 74.2% | — | Not comparable |
| ToolathlonSource | 49% | — | Not comparable |
| τ²-bench resultsSource | 94.2% | — | Not comparable |
| GDPval-AASource | 39.9% | — | Not comparable |
| GDPval-AASource | 1299 | — | Not comparable |
| AA Agentic IndexSource | 34.4% | — | Not comparable |
| Toolathlon-VerifiedSource | — | 49.7% | Not comparable |
CodingDeepSeek V4 Pro (High) wins8 benchmarks
| Benchmark | DeepSeek V4 Pro (High) | Laguna S 2.1 | Result |
|---|---|---|---|
| CodeforcesSource | 2919.0 | — | Not comparable |
| SWE-bench VerifiedSource | 79.4% | — | Not comparable |
| SWE-bench ProSource | 54.4% | 59.4% | Laguna S 2.1 leads |
| SWE MultilingualSource | 74.1% | 78.5% | Laguna S 2.1 leads |
| Terminal-Bench 2.0Source | 63.3% | 70.2% | Laguna S 2.1 leads |
| AA-SciCodeSource | 46.4% | — | Not comparable |
| AA Coding IndexSource | 58.7% | — | Not comparable |
| deepSweSource | — | 40.4% | Not comparable |
Reasoning4 benchmarks
Knowledge12 benchmarks
| Benchmark | DeepSeek V4 Pro (High) | Laguna S 2.1 | Result |
|---|---|---|---|
| MMLU-ProSource | 87.1% | — | Not comparable |
| SimpleQASource | 46.2% | — | Not comparable |
| Chinese-SimpleQASource | 77.7% | — | Not comparable |
| GPQASource | 89.1% | — | Not comparable |
| GPQA-DSource | 89.1% | — | Not comparable |
| HLESource | 34.5% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 43.1% | — | Not comparable |
| AA-GPQA DiamondSource | 90.5% | — | Not comparable |
| AA-HLESource | 33.5% | — | Not comparable |
| AA-Omniscience IndexSource | -9.7% | — | Not comparable |
| AA-Omniscience AccuracySource | 41.8% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 88.6% | — | Not comparable |
Math4 benchmarks
Multimodal1 benchmarks
| Benchmark | DeepSeek V4 Pro (High) | Laguna S 2.1 | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1264 | — | Not comparable |
Inst. Following1 benchmarks
| Benchmark | DeepSeek V4 Pro (High) | Laguna S 2.1 | Result |
|---|---|---|---|
| AA-IFBenchSource | 71.3% | — | Not comparable |
Frequently Asked Questions (3)
Which is better, DeepSeek V4 Pro (High) or Laguna S 2.1?
DeepSeek V4 Pro (High) and Laguna S 2.1 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 coding, DeepSeek V4 Pro (High) or Laguna S 2.1?
DeepSeek V4 Pro (High) has the edge for coding in this comparison, averaging 69.8 versus 59.4. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, DeepSeek V4 Pro (High) or Laguna S 2.1?
DeepSeek V4 Pro (High) has the edge for agentic tasks in this comparison, averaging 70.6 versus 70.2. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Related Comparisons
Explore More
Choose a model with this week’s evidence
Join 2,000+ readers for ranking moves, pricing changes, and the claims that still need proof.
One email each week. Unsubscribe anytime.