GPT-5.5 vs SWE-1.7
Head-to-head comparison across 1benchmark 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.
GPT-5.5
80
SWE-1.7
75
Verified leaderboard positions: GPT-5.5 #6 · SWE-1.7 unranked
Pick GPT-5.5 if you want the stronger benchmark profile. SWE-1.7 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 | GPT-5.5 | Δ | SWE-1.7 |
|---|---|---|---|
| Agentic | 81.6 | ← 0.1 | 81.5 |
| Coding | 58.6 | — | — |
| Reasoning | 85.0 | — | — |
| Knowledge | 57.8 | — | — |
| Math | 51.7 | — | — |
| Multimodal | 70.4 | — | — |
Operational Comparison
GPT-5.5
SWE-1.7
$5 / $30
N/A
N/A
N/A
N/A
N/A
1M
256K
Quick Verdict
Pick GPT-5.5 if you want the stronger benchmark profile. SWE-1.7 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 75. 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 agentic, where it averages 81.6 against 81.5. The single biggest benchmark swing on the page is Terminal-Bench 2.0, 82% to 81.5%.
GPT-5.5 gives you the larger context window at 1M, compared with 256K for SWE-1.7.
Benchmark Deep Dive
Frequently Asked Questions (2)
Which is better, GPT-5.5 or SWE-1.7?
GPT-5.5 is ahead on BenchLM's provisional leaderboard, 80 to 75. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 82% and 81.5%.
Which is better for agentic tasks, GPT-5.5 or SWE-1.7?
GPT-5.5 has the edge for agentic tasks in this comparison, averaging 81.6 versus 81.5. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
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