Agents-A1 vs Claude Opus 4.5
Head-to-head comparison across 4benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Verdict
Claude Opus 4.5 leads for most workloads.
Based on BenchLM composite scores, July 2026.
Agents-A1
63
Claude Opus 4.5
73
Verified leaderboard positions: Agents-A1 unranked · Claude Opus 4.5 #20
Pick Claude Opus 4.5 if you want the stronger benchmark profile. Agents-A1 only becomes the better choice if instruction following is the priority or you need the larger 262K context window.
Category Radar
Head-to-Head by Category
Category Breakdown
| Benchmark | Agents-A1 | Δ | Claude Opus 4.5 |
|---|---|---|---|
| Inst. Following | 94.8 | ← 25.3 | 69.5 |
| Agentic | 75.5 | ← 12.9 | 62.6 |
| Knowledge | 47.6 | → 10.9 | 58.5 |
| Reasoning | 60.2 | → 4.2 | 64.4 |
| Coding | — | — | 66.0 |
| Math | — | — | 90.2 |
| Multilingual | — | — | 85.7 |
| Multimodal | — | — | 69.9 |
Operational Comparison
Agents-A1
Claude Opus 4.5
N/A
$5 / $25
N/A
46 t/s
N/A
1.01s
262K
200K
Quick Verdict
Pick Claude Opus 4.5 if you want the stronger benchmark profile. Agents-A1 only becomes the better choice if instruction following is the priority or you need the larger 262K context window.
Claude Opus 4.5 is clearly ahead on the provisional aggregate, 73 to 63. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude Opus 4.5's sharpest advantage is in knowledge, where it averages 58.5 against 47.6. The single biggest benchmark swing on the page is HLE, 47.6% to 30.8%. Agents-A1 does hit back in instruction following, so the answer changes if that is the part of the workload you care about most.
Agents-A1 is the reasoning model in the pair, while Claude Opus 4.5 is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Agents-A1 gives you the larger context window at 262K, compared with 200K for Claude Opus 4.5.
Benchmark Deep Dive
Frequently Asked Questions (5)
Which is better, Agents-A1 or Claude Opus 4.5?
Claude Opus 4.5 is ahead on BenchLM's provisional leaderboard, 73 to 63. The biggest single separator in this matchup is HLE, where the scores are 47.6% and 30.8%.
Which is better for knowledge tasks, Agents-A1 or Claude Opus 4.5?
Claude Opus 4.5 has the edge for knowledge tasks in this comparison, averaging 58.5 versus 47.6. Inside this category, HLE is the benchmark that creates the most daylight between them.
Which is better for reasoning, Agents-A1 or Claude Opus 4.5?
Claude Opus 4.5 has the edge for reasoning in this comparison, averaging 64.4 versus 60.2. Inside this category, LongBench v2 is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, Agents-A1 or Claude Opus 4.5?
Agents-A1 has the edge for agentic tasks in this comparison, averaging 75.5 versus 62.6. Inside this category, VITA-Bench is the benchmark that creates the most daylight between them.
Which is better for instruction following, Agents-A1 or Claude Opus 4.5?
Agents-A1 has the edge for instruction following in this comparison, averaging 94.8 versus 69.5. Inside this category, IFEval is the benchmark that creates the most daylight between them.
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