Agents-A1 vs GPT-5.5
Head-to-head comparison across 3benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Verdict
GPT-5.5 leads for most workloads.
Based on BenchLM composite scores, July 2026.
Agents-A1
63
GPT-5.5
80
Verified leaderboard positions: Agents-A1 unranked · GPT-5.5 #6
Pick GPT-5.5 if you want the stronger benchmark profile. Agents-A1 only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
Category Radar
Head-to-Head by Category
Category Breakdown
| Benchmark | Agents-A1 | Δ | GPT-5.5 |
|---|---|---|---|
| Reasoning | 60.2 | → 24.8 | 85.0 |
| Knowledge | 47.6 | → 10.2 | 57.8 |
| Agentic | 75.5 | → 6.1 | 81.6 |
| Coding | — | — | 58.6 |
| Math | — | — | 51.7 |
| Multimodal | — | — | 70.4 |
| Inst. Following | 94.8 | — | — |
Operational Comparison
Agents-A1
GPT-5.5
N/A
$5 / $30
N/A
N/A
N/A
N/A
262K
1M
Quick Verdict
Pick GPT-5.5 if you want the stronger benchmark profile. Agents-A1 only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
GPT-5.5 is clearly ahead on the provisional aggregate, 80 to 63. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.5's sharpest advantage is in reasoning, where it averages 85 against 60.2. The single biggest benchmark swing on the page is BrowseComp, 75.5% to 84.4%.
GPT-5.5 gives you the larger context window at 1M, compared with 262K for Agents-A1.
Benchmark Deep Dive
Frequently Asked Questions (4)
Which is better, Agents-A1 or GPT-5.5?
GPT-5.5 is ahead on BenchLM's provisional leaderboard, 80 to 63. The biggest single separator in this matchup is BrowseComp, where the scores are 75.5% and 84.4%.
Which is better for knowledge tasks, Agents-A1 or GPT-5.5?
GPT-5.5 has the edge for knowledge tasks in this comparison, averaging 57.8 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 GPT-5.5?
GPT-5.5 has the edge for reasoning in this comparison, averaging 85 versus 60.2. Agents-A1 stays close enough that the answer can still flip depending on your workload.
Which is better for agentic tasks, Agents-A1 or GPT-5.5?
GPT-5.5 has the edge for agentic tasks in this comparison, averaging 81.6 versus 75.5. Inside this category, Tau2-Telecom is the benchmark that creates the most daylight between them.
Related Comparisons
The AI models change fast. We track them for you.
For engineers, researchers, and the plain curious — a weekly brief on new models, ranking shifts, and pricing changes.
Free. No spam. Unsubscribe anytime.