# Claude Fable 5 vs Kimi K3

> Side-by-side benchmark comparison for Claude Fable 5 and Kimi K3 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-fable-vs-kimi-k3
- Last updated: September 4, 2026

- Shared sourced benchmarks: 10
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Claude Fable 5 if you want the stronger benchmark profile. Kimi K3 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Claude Fable 5 leads overall 80.91 to 74.87.
- The clearest category separation is in multimodal & grounded, where the averages are 62.3 for Claude Fable 5 and 88.8 for Kimi K3.
- The biggest single benchmark swing is FrontierSWE v2 in Coding, with scores of 48.0% and 25.9%.
- Kimi K3 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 | Claude Fable 5 | Kimi K3 |
|----------|----------|----------|
| Creator | Anthropic | Moonshot AI |
| Type | Proprietary | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 1M+ | 1.05M |
| Overall Score | 80.91 | 74.87 |
| Benchmarks Covered | 18 | 43 |
| Pricing (input/output) | $10.00 / $50.00 | $3.00 / $15.00 |

## Category Breakdown

### Agentic

- Winner: Claude Fable 5
- Claude Fable 5 public-lane score: 74.8 (Supported · #3/151)
- Kimi K3 public-lane score: 71.8 (Supported · #4/151)

| Benchmark | Claude Fable 5 | Kimi K3 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 34.0% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 84.3% | 88.3% | Kimi K3 |
| OSWorld-Verified | 85% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 80.5% | 80.9% | Kimi K3 |
| BrowseComp | Coming soon | 91.2% | Coming soon |
| DeepSearchQA | Coming soon | 95.0% | Coming soon |
| Toolathlon-Verified | Coming soon | 73.2% | Coming soon |
| MCP Atlas | Coming soon | 84.2% | Coming soon |
| AutomationBench | Coming soon | 30.8% | 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 |

### Coding

- Winner: Claude Fable 5
- Claude Fable 5 public-lane score: 76.9 (Supported · #2/183)
- Kimi K3 public-lane score: 68 (Supported · #7/183)

| Benchmark | Claude Fable 5 | Kimi K3 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 95% | Coming soon | Coming soon |
| SWE-bench Pro | 80% | Coming soon | Coming soon |
| FrontierSWE v2 | 48.0% | 25.9% | Claude Fable 5 |
| FrontierCode 1.1 Main | 53.5% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 84.3% | Coming soon | Coming soon |
| cursorBench31 | 70.6% | Coming soon | Coming soon |
| cursorBench32 | 70.5% | 60.8% | Claude Fable 5 |
| VulcanBench v3 | 89.5% | 73.7% | Claude Fable 5 |
| LiveCodeBench (Vals) | 89.8% | 87.2% | Claude Fable 5 |
| SWE-bench (Vals) | 95.0% | 93.4% | Claude Fable 5 |
| deepSwe | Coming soon | 67.5% | 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 |
| OpenHarmony Bench | Coming soon | 57.3% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Claude Fable 5 public-lane score: 62.3 (Unranked · 2 rankable rows)
- Kimi K3 public-lane score: 88.8 (#1/48)

| Benchmark | Claude Fable 5 | Kimi K3 | Winner |
|-----------|-----------|-----------|--------|
| Blueprint-Bench 2 | 38.6% | Coming soon | Coming soon |
| OfficeQA Pro | 57.9% | 63.3% | Kimi K3 |
| 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 |
| CharXiv | Coming soon | 91.3% | 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 |

### Reasoning

- Winner: Coming soon
- Claude Fable 5 public-lane score: 76.2 (#11/22)
- Kimi K3 public-lane score: 78.5 (#3/22)

### Knowledge

- Winner: Claude Fable 5
- Claude Fable 5 public-lane score: 83.6 (Supported · #2/181)
- Kimi K3 public-lane score: 72.3 (Supported · #8/181)

| Benchmark | Claude Fable 5 | Kimi K3 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 93.2% | 92.9% | Claude Fable 5 |
| MMLU-Pro (Vals) | 91.5% | 88.0% | Claude Fable 5 |
| 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: Coming soon
- Claude Fable 5 public-lane score: 78.3 (#54/120)
- Kimi K3 public-lane score: Coming soon

## FAQ

### Which is better overall, Claude Fable 5 or Kimi K3?

Claude Fable 5 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Fable 5 and Kimi K3?

The widest category gap is in multimodal & grounded, where the averages are 62.3 for Claude Fable 5 and 88.8 for Kimi K3.

### How many benchmarks does Claude Fable 5 cover on BenchLM?

Claude Fable 5 currently has 18 sourced benchmark scores on BenchLM.

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

Kimi K3 currently has 43 sourced benchmark scores on BenchLM.

## Related Comparisons

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

## Explore More

- [Claude Fable 5 profile](/models/claude-fable)
- [Kimi K3 profile](/models/kimi-k3)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)