# Claude Opus 5.5 vs LFM2.5-24B-A2B

> Side-by-side benchmark comparison for Claude Opus 5.5 and LFM2.5-24B-A2B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-5-5-vs-lfm2-5-24b-a2b
- Last updated: October 13, 2026

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Opus 5.5 and LFM2.5-24B-A2B 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.
- LFM2.5-24B-A2B has the lower published output-token price.
- Claude Opus 5.5 has the larger published context window at 1M.

## Model Snapshot

| Property | Claude Opus 5.5 | LFM2.5-24B-A2B |
|----------|----------|----------|
| Creator | Anthropic | LiquidAI |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 131K |
| Independent public score (not head-to-head) | 86.05 | 37.8 |
| Benchmarks Covered | 56 | 13 |
| Pricing (input/output) | $4.00 / $20.00 | $0.10 / $1.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Opus 5.5 public-lane score: 88.7 (Supported · #1/124)
- LFM2.5-24B-A2B public-lane score: 30.2 (Estimated · #88/124)

| Benchmark | Claude Opus 5.5 | LFM2.5-24B-A2B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 66.40% | Coming soon | Coming soon |
| Terminal-Bench-Science 0.1 | 58.7% | Coming soon | Coming soon |
| AutomationBench | 40.0% | 27.7% | Claude Opus 5.5 |
| HLE w/ tools | 67.7% | Coming soon | Coming soon |
| OSWorld 2.0 | 48.7% | Coming soon | Coming soon |
| LAB all-pass (Harvey held-out) | 8.3% | Coming soon | Coming soon |
| LAB criterion-pass (Harvey held-out) | 91.2% | Coming soon | Coming soon |
| Toolathlon-Verified | 77.8% | Coming soon | Coming soon |
| Toolathlon Verified Pass@3 | 82.4% | Coming soon | Coming soon |
| Toolathlon Verified Pass³ | 72.2% | Coming soon | Coming soon |
| Toolathlon Verified avg. turns | 26.9 turns | Coming soon | Coming soon |
| CWE-bench v1 | 67.0% | Coming soon | Coming soon |
| BFCL v4 | Coming soon | 65.0% | Coming soon |
| τ³-bench results | Coming soon | 8.0% | Coming soon |
| PinchBench | Coming soon | 83.2% | Coming soon |
| WebArena-Verified | Coming soon | 26.8% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Opus 5.5 public-lane score: 82.8 (Supported · #2/149)
- LFM2.5-24B-A2B public-lane score: 28.5 (Estimated · #98/149)

| Benchmark | Claude Opus 5.5 | LFM2.5-24B-A2B | Winner |
|-----------|-----------|-----------|--------|
| FrontierCode 1.1 Main | 54.4% | Coming soon | Coming soon |
| CursorBench 4.0 | 57.8% | Coming soon | Coming soon |
| SWE-bench Pro | 89.9% | Coming soon | Coming soon |
| SWE Multilingual | 93.9% | Coming soon | Coming soon |
| SWE Multimodal | 61.4% | Coming soon | Coming soon |
| DeepSWE | 74.2% | Coming soon | Coming soon |
| FrontierCode 1.1 Extended | 63.6% | Coming soon | Coming soon |
| FrontierSWE v2 | 62.3% | Coming soon | Coming soon |
| ProgramBench | 91.2% | Coming soon | Coming soon |
| PostTrainBench v1.1 | 49.3% | Coming soon | Coming soon |
| Bug Hunt Bench | 41.7 fixes | Coming soon | Coming soon |
| SciCode | Coming soon | 32.7% | Coming soon |
| SWE-bench Verified | Coming soon | 51% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Opus 5.5 public-lane score: 86.1 (#3/29)
- LFM2.5-24B-A2B public-lane score: Coming soon

| Benchmark | Claude Opus 5.5 | LFM2.5-24B-A2B | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | 97.50% | Coming soon | Coming soon |
| ARC-AGI-2 | 91.7% | Coming soon | Coming soon |
| GraphWalks BFS 256K–1M | 66.8% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude Opus 5.5 public-lane score: 92.2 (#3/54)
- LFM2.5-24B-A2B public-lane score: Coming soon

| Benchmark | Claude Opus 5.5 | LFM2.5-24B-A2B | Winner |
|-----------|-----------|-----------|--------|
| Chartography (tools) | 89.0% | Coming soon | Coming soon |
| Chartography (no tools) | 64.4% | Coming soon | Coming soon |
| BenchCAD Vision2Code (no tools) | 0.730 | Coming soon | Coming soon |
| BenchCAD Vision2Code (tools) | 0.962 | Coming soon | Coming soon |
| Biomedical image analysis | 71.4% | Coming soon | Coming soon |
| OfficeQA | 78.9% | Coming soon | Coming soon |
| OfficeQA Pro | 67.7% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude Opus 5.5 public-lane score: 89.6 (Supported · #1/181)
- LFM2.5-24B-A2B public-lane score: 40.8 (Estimated · #112/181)

| Benchmark | Claude Opus 5.5 | LFM2.5-24B-A2B | Winner |
|-----------|-----------|-----------|--------|
| HLE w/o tools | 64.4% | Coming soon | Coming soon |
| HealthBench (raw) | 68.1% | Coming soon | Coming soon |
| HealthBench (length-adjusted) | 60.6% | Coming soon | Coming soon |
| HealthBench Professional | 65.6% | Coming soon | Coming soon |
| HealthBench Professional (raw) | 77.1% | Coming soon | Coming soon |
| BioMysteryBench (human-solvable) | 89.3% | Coming soon | Coming soon |
| BioMysteryBench (human-difficult) | 50.0% | Coming soon | Coming soon |
| SpatialBench Verified | 72.0% | Coming soon | Coming soon |
| SingleCellBench | 61.2% | Coming soon | Coming soon |
| Morphology-to-molecule matching | 34.0% | Coming soon | Coming soon |
| Medicinal chemistry | 63.5% | Coming soon | Coming soon |
| Protein Design | 60.2% | Coming soon | Coming soon |
| Protein Design library ranking | 56.0% | Coming soon | Coming soon |
| De novo protein-binder design | 82.6% | Coming soon | Coming soon |
| Protocols (troubleshooting) | 73.7% | Coming soon | Coming soon |
| Protocols (understanding) | 69.0% | Coming soon | Coming soon |
| GPQA | Coming soon | 74.4% | Coming soon |
| GPQA-D | Coming soon | 74.4% | Coming soon |
| HLE | Coming soon | 7.4% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- Claude Opus 5.5 public-lane score: Coming soon
- LFM2.5-24B-A2B public-lane score: Coming soon

| Benchmark | Claude Opus 5.5 | LFM2.5-24B-A2B | Winner |
|-----------|-----------|-----------|--------|
| GMMLU | 94.3% | Coming soon | Coming soon |
| MILU | 93.1% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude Opus 5.5 public-lane score: Coming soon
- LFM2.5-24B-A2B public-lane score: 75.6 (#61/128)

| Benchmark | Claude Opus 5.5 | LFM2.5-24B-A2B | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | 1.0% | Coming soon | Coming soon |
| IFEval | Coming soon | 96.8% | Coming soon |
| IFBench | Coming soon | 74.7% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude Opus 5.5 public-lane score: 97.3 (Unranked · 4 rankable rows)
- LFM2.5-24B-A2B public-lane score: Coming soon

| Benchmark | Claude Opus 5.5 | LFM2.5-24B-A2B | Winner |
|-----------|-----------|-----------|--------|
| ArXivMath Aug. 2026 (no tools) | 91.2% | Coming soon | Coming soon |
| ArXivMath Aug. 2026 (tools) | 96.9% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 91.228% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 95.000% | Coming soon | Coming soon |
| MATH-500 | Coming soon | 96.0% | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Opus 5.5 and LFM2.5-24B-A2B?

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

- [Claude Opus 5.5 vs GPT-6.1 Sol](/compare/claude-opus-5-5-vs-gpt-6-1-sol)
- [LFM2.5-24B-A2B vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-lfm2-5-24b-a2b)
- [Claude Opus 5.5 vs GPT-6 Astra](/compare/claude-opus-5-5-vs-gpt-6-astra)
- [LFM2.5-24B-A2B vs GPT-6 Astra](/compare/gpt-6-astra-vs-lfm2-5-24b-a2b)

## Explore More

- [Claude Opus 5.5 profile](/models/claude-opus-5-5)
- [LFM2.5-24B-A2B profile](/models/lfm2-5-24b-a2b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)