# Kimi K3 vs Solar Open 2

> Side-by-side benchmark comparison for Kimi K3 and Solar Open 2 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/kimi-k3-vs-solar-open-2
- Last updated: September 10, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Kimi K3 if you want the stronger benchmark profile. Solar Open 2 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Kimi K3 leads overall 74.82 to 0.
- The biggest single benchmark swing is MCP Atlas in Agentic, with scores of 84.2% and 58.2%.
- Solar Open 2 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Kimi K3 also has the larger context window at 1.05M.

## Model Snapshot

| Property | Kimi K3 | Solar Open 2 |
|----------|----------|----------|
| Creator | Moonshot AI | Upstage |
| Type | Pending | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1.05M | 1M |
| Overall Score | 74.82 | null |
| Benchmarks Covered | 43 | 11 |
| Pricing (input/output) | $3.00 / $15.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Kimi K3 public-lane score: 71.9 (Supported · #4/152)
- Solar Open 2 public-lane score: Coming soon

| Benchmark | Kimi K3 | Solar Open 2 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 88.3% | Coming soon | Coming soon |
| BrowseComp | 91.2% | Coming soon | Coming soon |
| DeepSearchQA | 95.0% | Coming soon | Coming soon |
| Toolathlon-Verified | 73.2% | Coming soon | Coming soon |
| MCP Atlas | 84.2% | 58.2% | Kimi K3 |
| AutomationBench | 30.8% | Coming soon | Coming soon |
| JobBench | 52.9% | Coming soon | Coming soon |
| APEX-Agents | 37.6% | 16.6% | Kimi K3 |
| SpreadsheetBench 2 | 34.8% | Coming soon | Coming soon |
| DECK-Bench | 73.5% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 80.9% | Coming soon | Coming soon |
| terminalBenchHard | Coming soon | 28.3% | Coming soon |

### Coding

- Winner: Coming soon
- Kimi K3 public-lane score: 68 (Supported · #6/151)
- Solar Open 2 public-lane score: Coming soon

| Benchmark | Kimi K3 | Solar Open 2 | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 67.5% | Coming soon | Coming soon |
| cursorBench32 | 60.8% | Coming soon | Coming soon |
| FrontierSWE | 81.2% | Coming soon | Coming soon |
| ProgramBench | 77.8% | Coming soon | Coming soon |
| Kimi Code Bench v2 | 72.9% | Coming soon | Coming soon |
| sweMarathon | 42% | Coming soon | Coming soon |
| PostTrain Bench | 36.6% | Coming soon | Coming soon |
| MLS-Bench Lite | 48.3% | Coming soon | Coming soon |
| VulcanBench v3 | 73.7% | Coming soon | Coming soon |
| OpenHarmony Bench | 57.3% | Coming soon | Coming soon |
| FrontierSWE v2 | 25.9% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 87.2% | Coming soon | Coming soon |
| SWE-bench (Vals) | 93.4% | Coming soon | Coming soon |
| LiveCodeBench v6 | Coming soon | 92.4% | Coming soon |
| SWE-bench Verified | Coming soon | 70.4% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Kimi K3 public-lane score: 89.5 (#1/48)
- Solar Open 2 public-lane score: Coming soon

| Benchmark | Kimi K3 | Solar Open 2 | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | 63.3% | Coming soon | Coming soon |
| MMMU-Pro | 81.6% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | 83.4% | Coming soon | Coming soon |
| CharXiv w/o tools | 84.8% | Coming soon | Coming soon |
| CharXiv | 91.3% | Coming soon | Coming soon |
| MathVision | 94.3% | Coming soon | Coming soon |
| MathVision w/ Python | 97.8% | Coming soon | Coming soon |
| BabyVision w/ Python | 85.7% | Coming soon | Coming soon |
| ZeroBench | 23.0% | Coming soon | Coming soon |
| ZeroBench w/ Python | 41.0% | Coming soon | Coming soon |
| WorldVQA ForceAnswer | 51.0% | Coming soon | Coming soon |
| OmniDocBench | 91.1% | Coming soon | Coming soon |
| PerceptionBench | 58.5% | Coming soon | Coming soon |

### Reasoning

- Winner: Coming soon
- Kimi K3 public-lane score: 78.5 (#3/20)
- Solar Open 2 public-lane score: Coming soon

### Knowledge

- Winner: Coming soon
- Kimi K3 public-lane score: 72 (Supported · #8/183)
- Solar Open 2 public-lane score: Coming soon

| Benchmark | Kimi K3 | Solar Open 2 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 93.5% | Coming soon | Coming soon |
| GPQA-D | 93.5% | 86.3% | Kimi K3 |
| HLE | 56% | Coming soon | Coming soon |
| HLE w/o tools | 43.5% | 28.8% | Kimi K3 |
| GPQA Diamond (Vals) | 92.9% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 88.0% | Coming soon | Coming soon |
| MMLU-Pro | Coming soon | 86.2% | Coming soon |

### Instruction Following

- Winner: Coming soon
- Kimi K3 public-lane score: Coming soon
- Solar Open 2 public-lane score: Coming soon

| Benchmark | Kimi K3 | Solar Open 2 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 80% | Coming soon |

### Mathematics

- Winner: Coming soon
- Kimi K3 public-lane score: Coming soon
- Solar Open 2 public-lane score: Coming soon

| Benchmark | Kimi K3 | Solar Open 2 | Winner |
|-----------|-----------|-----------|--------|
| HMMT Feb 2026 | Coming soon | 93.9% | Coming soon |
| AIME26 | Coming soon | 95.7% | Coming soon |

## FAQ

### Which is better overall, Kimi K3 or Solar Open 2?

Kimi K3 is ahead overall on BenchLM right now.

### How many benchmarks does Kimi K3 cover on BenchLM?

Kimi K3 currently has 43 sourced benchmark scores on BenchLM.

### How many benchmarks does Solar Open 2 cover on BenchLM?

Solar Open 2 currently has 11 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Kimi K3 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-kimi-k3)
- [Solar Open 2 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-solar-open-2)
- [Kimi K3 vs GPT-6 Astra](/compare/gpt-6-astra-vs-kimi-k3)
- [Solar Open 2 vs GPT-6 Astra](/compare/gpt-6-astra-vs-solar-open-2)

## Explore More

- [Kimi K3 profile](/models/kimi-k3)
- [Solar Open 2 profile](/models/solar-open-2)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)