Model comparison
Grok 4.3 vs Laguna S 2.1
Head-to-head evidence from 0 shared benchmark results across 0 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Grok 4.3 #31 (Supported); Laguna S 2.1 unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Grok 4.3 and Laguna S 2.1 share 0 comparable benchmark results. 1 of 8 categories are comparable. 25 results are unique to Grok 4.3; 6 to Laguna S 2.1.
Updated July 21, 2026- Shared results
- 0
- Grok 4.3 only
- 25
- Laguna S 2.1 only
- 6
- Comparable categories
- 1 / 8
Treat this as a split decision. Grok 4.3 makes more sense if its workflow fits your team better; Laguna S 2.1 is the better fit if coding is the priority or you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 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
Grok 4.3 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.
Grok 4.3 is also the more expensive model on tokens at $1.25 input / $2.50 output per 1M tokens, versus $0.10 input / $0.20 output per 1M tokens for Laguna S 2.1. That is roughly 12.5x on output cost alone.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Grok 4.3 | Laguna S 2.1 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Grok 4.3$1.25 input / $2.5 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 | Grok 4.3209 tok/s | Laguna S 2.1Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Grok 4.312.36 s | Laguna S 2.1Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Grok 4.31M | Laguna S 2.11M | Listed context windows are equal. |
Benchmark Deep Dive
Agentic9 benchmarks
| Benchmark | Grok 4.3 | Laguna S 2.1 | Result |
|---|---|---|---|
| τ²-bench resultsSource | 97.7% | — | 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 |
| Gert LabsSource | 43.86% | — | Not comparable |
| ResearchClawBenchSource | 12.4% | — | Not comparable |
| Terminal-Bench 2.0Source | — | 70.2% | Not comparable |
| Toolathlon-VerifiedSource | — | 49.7% | Not comparable |
CodingLaguna S 2.1 wins7 benchmarks
| Benchmark | Grok 4.3 | Laguna S 2.1 | Result |
|---|---|---|---|
| SciCodeSource | 47.3% | — | Not comparable |
| AA Coding IndexSource | 42.3% | — | Not comparable |
| AA-SciCodeSource | 47.3% | — | Not comparable |
| Terminal-Bench 2.0Source | — | 70.2% | Not comparable |
| SWE MultilingualSource | — | 78.5% | Not comparable |
| SWE-bench ProSource | — | 59.4% | Not comparable |
| deepSweSource | — | 40.4% | Not comparable |
Reasoning2 benchmarks
Knowledge8 benchmarks
| Benchmark | Grok 4.3 | Laguna S 2.1 | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 37.6% | — | Not comparable |
| GPQASource | 90.1% | — | Not comparable |
| HLESource | 35% | — | Not comparable |
| AA-Omniscience AccuracySource | 34.6% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 25.0% | — | Not comparable |
| AA-GPQA DiamondSource | 90.1% | — | Not comparable |
| AA-HLESource | 35.0% | — | Not comparable |
| AA-Omniscience IndexSource | 18.3% | — | Not comparable |
Multimodal3 benchmarks
Frequently Asked Questions (2)
Which is better, Grok 4.3 or Laguna S 2.1?
Grok 4.3 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, Grok 4.3 or Laguna S 2.1?
Laguna S 2.1 has the edge for coding in this comparison, averaging 59.4 versus 47.3. Grok 4.3 stays close enough that the answer can still flip depending on your workload.
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