# Kimi K2 vs Llama 3.1 405B

> Side-by-side benchmark comparison for Kimi K2 and Llama 3.1 405B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/kimi-k2-vs-llama-3-1-405b
- Last updated: October 17, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Kimi K2 and Llama 3.1 405B share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Llama 3.1 405B has the lower published output-token price.

## Model Snapshot

| Property | Kimi K2 | Llama 3.1 405B |
|----------|----------|----------|
| Creator | Moonshot AI | Meta |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 128K | 128K |
| Independent public score (not head-to-head) | 33.48 | 28.21 |
| Benchmarks Covered | 13 | 1 |
| Pricing (input/output) | $0.60 / $2.50 | $0.00 / $0.00 |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- Kimi K2 public-lane score: Coming soon
- Llama 3.1 405B public-lane score: Coming soon

| Benchmark | Kimi K2 | Llama 3.1 405B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 65.8% | Coming soon | Coming soon |
| LiveCodeBench v6 | 53.7% | Coming soon | Coming soon |
| SWE Multilingual | 47.3% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Kimi K2 public-lane score: 62.3 (Unranked · 2 rankable rows)
- Llama 3.1 405B public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- Kimi K2 public-lane score: 36.1 (Estimated · #129/184)
- Llama 3.1 405B public-lane score: Coming soon

| Benchmark | Kimi K2 | Llama 3.1 405B | Winner |
|-----------|-----------|-----------|--------|
| MMLU | 89.5% | Coming soon | Coming soon |
| GPQA | 75.1% | Coming soon | Coming soon |
| SuperGPQA | 57.2% | Coming soon | Coming soon |
| MMLU-Pro | 81.1% | Coming soon | Coming soon |
| SimpleQA | 31% | Coming soon | Coming soon |
| HLE | 4.7% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Kimi K2 public-lane score: 48.4 (#96/148)
- Llama 3.1 405B public-lane score: 0 (#148/148)

| Benchmark | Kimi K2 | Llama 3.1 405B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 89.8% | 88.6% | Kimi K2 |

### Mathematics

- Winner: Insufficient shared evidence
- Kimi K2 public-lane score: 0 (#12/12)
- Llama 3.1 405B public-lane score: Coming soon

| Benchmark | Kimi K2 | Llama 3.1 405B | Winner |
|-----------|-----------|-----------|--------|
| AIME 2024 | 69.6% | Coming soon | Coming soon |
| AIME 2025 | 49.5% | Coming soon | Coming soon |
| MATH-500 | 97.4% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Kimi K2 and Llama 3.1 405B?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Kimi K2 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-kimi-k2)
- [Llama 3.1 405B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-llama-3-1-405b)
- [Kimi K2 vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-kimi-k2)
- [Llama 3.1 405B vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-llama-3-1-405b)

## Explore More

- [Kimi K2 profile](/models/kimi-k2)
- [Llama 3.1 405B profile](/models/llama-3-1-405b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)