Model comparison
Kimi K2.5 (Reasoning) vs Laguna XS.2
Head-to-head evidence from 2 shared benchmark results across 2 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Kimi K2.5 (Reasoning) #64 (Estimated); Laguna XS.2 unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Kimi K2.5 (Reasoning) and Laguna XS.2 share 2 comparable benchmark results. 2 of 8 categories are comparable. 25 results are unique to Kimi K2.5 (Reasoning); 3 to Laguna XS.2.
Updated July 27, 2026- Shared results
- 2
- Kimi K2.5 (Reasoning) only
- 25
- Laguna XS.2 only
- 3
- Comparable categories
- 2 / 8
Treat this as a split decision. Kimi K2.5 (Reasoning) makes more sense if agentic is the priority; Laguna XS.2 is the better fit if you want the cheaper token bill or you need the larger 256K context window.
Confidence note. This is a partial-evidence comparison with 2 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
Kimi K2.5 (Reasoning) and Laguna XS.2 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.
Kimi K2.5 (Reasoning) is also the more expensive model on tokens at $0.60 input / $3.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Laguna XS.2. That is roughly Infinityx on output cost alone. Laguna XS.2 gives you the larger context window at 256K, compared with 128K for Kimi K2.5 (Reasoning).
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 | Kimi K2.5 (Reasoning) | Δ | Laguna XS.2 |
|---|---|---|---|
| Agentic | Kimi K2.5 (Reasoning)55.0 | Margin← 19.3 | Laguna XS.235.7 |
| Coding | Kimi K2.5 (Reasoning)76.8 | Margin← 16.0 | Laguna XS.260.8 |
| Knowledge | Kimi K2.5 (Reasoning)87.2 | MarginNo overlap | Laguna XS.2Not measured |
| Multimodal | Kimi K2.5 (Reasoning)78.5 | MarginNo overlap | Laguna XS.2Not measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
Terminal-Bench 2.0
AgenticA 50.8%B 35.7%Winner: Kimi K2.5 (Reasoning)Δ 15.1Terminal-Bench 2.0: Kimi K2.5 (Reasoning) scored 50.8%; Laguna XS.2 scored 35.7%. Kimi K2.5 (Reasoning) wins this benchmark. - Source ↗
SWE-bench Verified
CodingA 76.8%B 69.9%Winner: Kimi K2.5 (Reasoning)Δ 6.9SWE-bench Verified: Kimi K2.5 (Reasoning) scored 76.8%; Laguna XS.2 scored 69.9%. Kimi K2.5 (Reasoning) wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Kimi K2.5 (Reasoning) | Laguna XS.2 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Kimi K2.5 (Reasoning)$0.6 input / $3 output | Laguna XS.2$0 input / $0 output | Laguna XS.2 has the lower combined listed price. |
| Generation speedtokens per second | Kimi K2.5 (Reasoning)Not available | Laguna XS.2Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Kimi K2.5 (Reasoning)Not available | Laguna XS.2Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Kimi K2.5 (Reasoning)128K | Laguna XS.2256K | Laguna XS.2 lists the larger context window. |
Benchmark Deep Dive
AgenticKimi K2.5 (Reasoning) wins8 benchmarks
| Benchmark | Kimi K2.5 (Reasoning) | Laguna XS.2 | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 50.8% | 35.7% | Kimi K2.5 (Reasoning) leads |
| BrowseCompSource | 60.6% | — | Not comparable |
| APEX-Agents-AASource | 11.5% | — | Not comparable |
| τ²-bench resultsSource | 95.9% | — | Not comparable |
| Gert LabsSource | 32.58% | — | Not comparable |
| AA Agentic IndexSource | 21.7% | — | Not comparable |
| GDPval-AASource | 25.1% | — | Not comparable |
| GDPval-AASource | 1003 | — | Not comparable |
CodingKimi K2.5 (Reasoning) wins7 benchmarks
| Benchmark | Kimi K2.5 (Reasoning) | Laguna XS.2 | Result |
|---|---|---|---|
| SWE-bench VerifiedSource | 76.8% | 69.9% | Kimi K2.5 (Reasoning) leads |
| Vibe Code BenchSource | 17.54% | — | Not comparable |
| AA-SciCodeSource | 49.0% | — | Not comparable |
| AA Coding IndexSource | 46.8% | — | Not comparable |
| SWE MultilingualSource | — | 57.7% | Not comparable |
| SWE-bench ProSource | — | 46.3% | Not comparable |
| Terminal-Bench 2.0Source | — | 35.7% | Not comparable |
Reasoning2 benchmarks
Knowledge8 benchmarks
| Benchmark | Kimi K2.5 (Reasoning) | Laguna XS.2 | Result |
|---|---|---|---|
| GPQASource | 87.6% | — | Not comparable |
| MMLU-ProSource | 87.1% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 35.4% | — | Not comparable |
| AA-GPQA DiamondSource | 87.9% | — | Not comparable |
| AA-HLESource | 29.4% | — | Not comparable |
| AA-Omniscience IndexSource | -8.1% | — | Not comparable |
| AA-Omniscience AccuracySource | 34.3% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 64.6% | — | Not comparable |
Math1 benchmarks
| Benchmark | Kimi K2.5 (Reasoning) | Laguna XS.2 | Result |
|---|---|---|---|
| AIME 2025Source | 96.1% | — | Not comparable |
Multimodal3 benchmarks
Inst. Following1 benchmarks
| Benchmark | Kimi K2.5 (Reasoning) | Laguna XS.2 | Result |
|---|---|---|---|
| AA-IFBenchSource | 70.2% | — | Not comparable |
Frequently Asked Questions (3)
Which is better, Kimi K2.5 (Reasoning) or Laguna XS.2?
Kimi K2.5 (Reasoning) and Laguna XS.2 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, Kimi K2.5 (Reasoning) or Laguna XS.2?
Kimi K2.5 (Reasoning) has the edge for coding in this comparison, averaging 76.8 versus 60.8. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, Kimi K2.5 (Reasoning) or Laguna XS.2?
Kimi K2.5 (Reasoning) has the edge for agentic tasks in this comparison, averaging 55 versus 35.7. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
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