Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.5 Pro
100
Ling 2.6 Flash
44
Pick GPT-5.5 Pro if you want the stronger benchmark profile. Ling 2.6 Flash only becomes the better choice if knowledge is the priority or you would rather avoid the extra latency and token burn of a reasoning model.
Knowledge
+1.8 difference
GPT-5.5 Pro
Ling 2.6 Flash
$30 / $180
$null / $null
N/A
209.5 t/s
N/A
1.07s
1M
262K
Pick GPT-5.5 Pro if you want the stronger benchmark profile. Ling 2.6 Flash only becomes the better choice if knowledge is the priority or you would rather avoid the extra latency and token burn of a reasoning model.
GPT-5.5 Pro is clearly ahead on the provisional aggregate, 100 to 44. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.5 Pro is the reasoning model in the pair, while Ling 2.6 Flash 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. GPT-5.5 Pro gives you the larger context window at 1M, compared with 262K for Ling 2.6 Flash.
GPT-5.5 Pro is ahead on BenchLM's provisional leaderboard, 100 to 44.
Ling 2.6 Flash has the edge for knowledge tasks in this comparison, averaging 59 versus 57.2. GPT-5.5 Pro stays close enough that the answer can still flip depending on your workload.
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