# GLM-5.3-Flash vs Kimi K3

> Side-by-side benchmark comparison for GLM-5.3-Flash and Kimi K3 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/glm-5-3-flash-vs-kimi-k3
- Last updated: October 10, 2026

- Shared sourced benchmarks: 14
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Kimi K3 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Kimi K3 has the higher overall point estimate 70.8 to 57.36. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in agentic, where the averages are 55.7 for GLM-5.3-Flash and 69.7 for Kimi K3.
- The biggest single benchmark swing is Terminal-Bench 2.1 (Vals) in Agentic, with scores of 62.9% and 80.9%.
- GLM-5.3-Flash 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 | GLM-5.3-Flash | Kimi K3 |
|----------|----------|----------|
| Creator | Z.AI | Moonshot AI |
| Type | Open Weight | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1.05M |
| Overall Score | 57.36 | 70.8 |
| Benchmarks Covered | 21 | 49 |
| Pricing (input/output) | $0.00 / $0.00 | $3.00 / $15.00 |

## Category Breakdown

### Agentic

- Winner: Kimi K3
- GLM-5.3-Flash public-lane score: 55.7 (Supported · #34/123)
- Kimi K3 public-lane score: 69.7 (Supported · #8/123)

| Benchmark | GLM-5.3-Flash | Kimi K3 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 84.3% | 88.3% | Kimi K3 |
| Toolathlon-Verified | 78.4% | 73.2% | GLM-5.3-Flash |
| AutomationBench | 48.8% | 30.8% | GLM-5.3-Flash |
| Agents' Last Exam | 26.3% | Coming soon | Coming soon |
| HLE w/ tools | 55.3% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 62.9% | 80.9% | Kimi K3 |
| BrowseComp | Coming soon | 91.2% | Coming soon |
| DeepSearchQA | Coming soon | 95.0% | Coming soon |
| MCP Atlas | Coming soon | 84.2% | Coming soon |
| JobBench | Coming soon | 52.9% | Coming soon |
| APEX-Agents | Coming soon | 37.6% | Coming soon |
| SpreadsheetBench 2 | Coming soon | 34.8% | Coming soon |
| DECK-Bench | Coming soon | 73.5% | Coming soon |
| ApprenticeBench | Coming soon | 18% | Coming soon |

### Coding

- Winner: Kimi K3
- GLM-5.3-Flash public-lane score: 49.3 (Supported · #42/146)
- Kimi K3 public-lane score: 59.7 (Supported · #22/146)

| Benchmark | GLM-5.3-Flash | Kimi K3 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 84.3% | Coming soon | Coming soon |
| DeepSWE | 63.4% | 67.5% | Kimi K3 |
| NL2Repo | 56.3% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 80.5% | 87.2% | Kimi K3 |
| SWE-bench (Vals) | 92.0% | 93.4% | Kimi K3 |
| OpenHarmony Bench | 57.3% | 57.3% | Tie |
| FrontierSWE v2 | 18.1% | 25.9% | Kimi K3 |
| Bug Hunt Bench | 17.7 fixes | 21.0 fixes | Kimi K3 |
| CursorBench 3.2 | Coming soon | 60.8% | Coming soon |
| FrontierSWE | Coming soon | 81.2% | Coming soon |
| ProgramBench | Coming soon | 77.8% | Coming soon |
| Kimi Code Bench v2 | Coming soon | 72.9% | Coming soon |
| sweMarathon | Coming soon | 42% | Coming soon |
| PostTrain Bench | Coming soon | 36.6% | Coming soon |
| MLS-Bench Lite | Coming soon | 48.3% | Coming soon |
| VulcanBench v3 | Coming soon | 73.7% | Coming soon |
| PostTrainBench v1.1 | Coming soon | 32.0% | Coming soon |

### Reasoning

- Winner: Directional only
- GLM-5.3-Flash public-lane score: 81.1 (#11/28)
- Kimi K3 public-lane score: 69.2 (#21/28)

| Benchmark | GLM-5.3-Flash | Kimi K3 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | Coming soon | 94.50% | Coming soon |
| ARC-AGI-2 | Coming soon | 60.4% | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- GLM-5.3-Flash public-lane score: 84 (#14/54)
- Kimi K3 public-lane score: 92.6 (#1/54)

| Benchmark | GLM-5.3-Flash | Kimi K3 | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | 62.4% | 63.3% | Kimi K3 |
| CharXiv | 89.4% | 91.3% | Kimi K3 |
| Chartography (tools) | 78.0% | Coming soon | Coming soon |
| BabyVision | 53.4% | Coming soon | Coming soon |
| MMVU | 80.5% | Coming soon | Coming soon |
| MMMU-Pro | Coming soon | 81.6% | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 83.4% | Coming soon |
| CharXiv w/o tools | Coming soon | 84.8% | Coming soon |
| MathVision | Coming soon | 94.3% | Coming soon |
| MathVision w/ Python | Coming soon | 97.8% | Coming soon |
| BabyVision w/ Python | Coming soon | 85.7% | Coming soon |
| ZeroBench | Coming soon | 23.0% | Coming soon |
| ZeroBench w/ Python | Coming soon | 41.0% | Coming soon |
| WorldVQA ForceAnswer | Coming soon | 51.0% | Coming soon |
| OmniDocBench | Coming soon | 91.1% | Coming soon |
| PerceptionBench | Coming soon | 58.5% | Coming soon |

### Knowledge

- Winner: Kimi K3
- GLM-5.3-Flash public-lane score: 60.5 (Supported · #43/177)
- Kimi K3 public-lane score: 68.7 (Supported · #18/177)

| Benchmark | GLM-5.3-Flash | Kimi K3 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 86.4% | 92.9% | Kimi K3 |
| MMLU-Pro (Vals) | 86.1% | 88.0% | Kimi K3 |
| GPQA | Coming soon | 93.5% | Coming soon |
| GPQA-D | Coming soon | 93.5% | Coming soon |
| HLE | Coming soon | 56% | Coming soon |
| HLE w/o tools | Coming soon | 43.5% | Coming soon |

### Instruction Following

- Winner: Not comparable
- GLM-5.3-Flash public-lane score: Coming soon
- Kimi K3 public-lane score: Coming soon

| Benchmark | GLM-5.3-Flash | Kimi K3 | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | Coming soon | 52.7% | Coming soon |

## FAQ

### Which is better overall, GLM-5.3-Flash or Kimi K3?

Kimi K3 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between GLM-5.3-Flash and Kimi K3?

The widest category gap is in agentic, where the averages are 55.7 for GLM-5.3-Flash and 69.7 for Kimi K3.

### How many benchmarks does GLM-5.3-Flash cover on BenchLM?

GLM-5.3-Flash currently has 21 sourced benchmark scores on BenchLM.

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

Kimi K3 currently has 49 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GLM-5.3-Flash vs GLM-5.3](/compare/glm-5-3-vs-glm-5-3-flash)
- [Kimi K3 vs GLM-5.3](/compare/glm-5-3-vs-kimi-k3)
- [GLM-5.3-Flash vs GLM-5.2](/compare/glm-5-2-vs-glm-5-3-flash)
- [Kimi K3 vs GLM-5.2](/compare/glm-5-2-vs-kimi-k3)

## Explore More

- [GLM-5.3-Flash profile](/models/glm-5-3-flash)
- [Kimi K3 profile](/models/kimi-k3)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)