# Agents-A1-4B vs Claude Opus 4.5

> Side-by-side benchmark comparison for Agents-A1-4B and Claude Opus 4.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/agents-a1-4b-vs-claude-opus-4-5
- Last updated: September 10, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Claude Opus 4.5 if you want the stronger benchmark profile. Agents-A1-4B only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Claude Opus 4.5 leads overall 58.41 to 0.
- The biggest single benchmark swing is LiveCodeBench v6 in Coding, with scores of 59.6% and 84.8%.
- Agents-A1-4B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Agents-A1-4B also has the larger context window at 262K.

## Model Snapshot

| Property | Agents-A1-4B | Claude Opus 4.5 |
|----------|----------|----------|
| Creator | InternScience | Anthropic |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 262K | 200K |
| Overall Score | null | 58.41 |
| Benchmarks Covered | 11 | 45 |
| Pricing (input/output) | $0.00 / $0.00 | $5.00 / $25.00 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Agents-A1-4B public-lane score: Coming soon
- Claude Opus 4.5 public-lane score: 43.2 (Estimated · #97/152)

| Benchmark | Agents-A1-4B | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| BrowseComp | 66.8% | Coming soon | Coming soon |
| GAIA | 95.1% | Coming soon | Coming soon |
| MLE-Bench Lite | 22.7% | Coming soon | Coming soon |
| τ²-bench results | 78.2% | Coming soon | Coming soon |
| VITA-Bench | 40.3% | 23.3% | Agents-A1-4B |
| Terminal-Bench 2.0 | Coming soon | 59.3% | Coming soon |
| OSWorld-Verified | Coming soon | 66.3% | Coming soon |
| OSWorld | Coming soon | 66.3% | Coming soon |
| Claw-Eval | Coming soon | 59.6% | Coming soon |
| QwenClawBench | Coming soon | 52.3% | Coming soon |
| τ³-bench results | Coming soon | 70.2% | Coming soon |
| DeepPlanning | Coming soon | 26.4% | Coming soon |
| Toolathlon | Coming soon | 43.5% | Coming soon |
| MCP Atlas | Coming soon | 42.3% | Coming soon |
| MCP-Tasks | Coming soon | 71.8% | Coming soon |
| WideResearch | Coming soon | 76.4% | Coming soon |
| CyberGym | Coming soon | 50.6% | Coming soon |
| Gert Labs | Coming soon | 64.23% | Coming soon |
| JobBench | Coming soon | 32.3% | Coming soon |

### Coding

- Winner: Coming soon
- Agents-A1-4B public-lane score: Coming soon
- Claude Opus 4.5 public-lane score: 56.6 (Estimated · #36/151)

| Benchmark | Agents-A1-4B | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| SciCode | 29.6% | Coming soon | Coming soon |
| LiveCodeBench v6 | 59.6% | 84.8% | Claude Opus 4.5 |
| SWE-bench Verified | Coming soon | 80.9% | Coming soon |
| SWE-bench Pro | Coming soon | 57.1% | Coming soon |
| SWE Multilingual | Coming soon | 77.5% | Coming soon |
| NL2Repo | Coming soon | 43.2% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Agents-A1-4B public-lane score: Coming soon
- Claude Opus 4.5 public-lane score: 23.5 (#46/48)

| Benchmark | Agents-A1-4B | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 70.6% | Coming soon |
| MathVision | Coming soon | 74.3% | Coming soon |
| CharXiv | Coming soon | 68.5% | Coming soon |
| VideoMMMU | Coming soon | 84.4% | Coming soon |
| ScreenSpot Pro | Coming soon | 45.7% | Coming soon |
| V* | Coming soon | 67.0% | Coming soon |

### Reasoning

- Winner: Coming soon
- Agents-A1-4B public-lane score: Coming soon
- Claude Opus 4.5 public-lane score: 72.1 (Unranked · 4 rankable rows)

| Benchmark | Agents-A1-4B | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | 52.1% | 64.4% | Claude Opus 4.5 |
| AI-Needle | Coming soon | 74% | Coming soon |

### Knowledge

- Winner: Coming soon
- Agents-A1-4B public-lane score: Coming soon
- Claude Opus 4.5 public-lane score: 53.9 (Estimated · #61/183)

| Benchmark | Agents-A1-4B | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| FrontierScience Research | 33.3% | Coming soon | Coming soon |
| GPQA | Coming soon | 87% | Coming soon |
| SuperGPQA | Coming soon | 70.6% | Coming soon |
| MMLU-Pro | Coming soon | 89.5% | Coming soon |
| MMLU-Redux | Coming soon | 96.6% | Coming soon |
| C-Eval | Coming soon | 92.2% | Coming soon |
| HLE | Coming soon | 30.8% | Coming soon |

### Instruction Following

- Winner: Coming soon
- Agents-A1-4B public-lane score: Coming soon
- Claude Opus 4.5 public-lane score: 39.5 (#105/123)

| Benchmark | Agents-A1-4B | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 69.1% | 58% | Agents-A1-4B |
| IFEval | 94.8% | 90.9% | Agents-A1-4B |

### Multilingual

- Winner: Coming soon
- Agents-A1-4B public-lane score: Coming soon
- Claude Opus 4.5 public-lane score: 82.9 (#2/12)

| Benchmark | Agents-A1-4B | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 85.7% | Coming soon |
| NOVA-63 | Coming soon | 56.7% | Coming soon |

### Mathematics

- Winner: Coming soon
- Agents-A1-4B public-lane score: Coming soon
- Claude Opus 4.5 public-lane score: 58.3 (#6/7)

| Benchmark | Agents-A1-4B | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 95.1% | Coming soon |
| HMMT Feb 2025 | Coming soon | 92.9% | Coming soon |
| HMMT Nov 2025 | Coming soon | 93.3% | Coming soon |
| HMMT Feb 2026 | Coming soon | 85.3% | Coming soon |
| MMAnswerBench | Coming soon | 84.0% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 20.690% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 4.167% | Coming soon |

## FAQ

### Which is better overall, Agents-A1-4B or Claude Opus 4.5?

Claude Opus 4.5 is ahead overall on BenchLM right now.

### How many benchmarks does Agents-A1-4B cover on BenchLM?

Agents-A1-4B currently has 11 sourced benchmark scores on BenchLM.

### How many benchmarks does Claude Opus 4.5 cover on BenchLM?

Claude Opus 4.5 currently has 45 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Agents-A1-4B vs Agents-A1](/compare/agents-a1-vs-agents-a1-4b)
- [Claude Opus 4.5 vs Agents-A1](/compare/agents-a1-vs-claude-opus-4-5)
- [Agents-A1-4B vs Agents-A1-F16-GGUF](/compare/agents-a1-4b-vs-agents-a1-f16-gguf)
- [Claude Opus 4.5 vs Agents-A1-F16-GGUF](/compare/agents-a1-f16-gguf-vs-claude-opus-4-5)

## Explore More

- [Agents-A1-4B profile](/models/agents-a1-4b)
- [Claude Opus 4.5 profile](/models/claude-opus-4-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)