Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.4 Pro
91
Ling 2.6 Flash
36
Pick GPT-5.4 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
+10.0 difference
GPT-5.4 Pro
Ling 2.6 Flash
$30 / $180
$null / $null
74 t/s
209.5 t/s
151.79s
1.07s
1.05M
262K
Pick GPT-5.4 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-5.4 Pro is clearly ahead on the provisional aggregate, 91 to 36. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.4 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-5.4 Pro gives you the larger context window at 1.05M, compared with 262K for Ling 2.6 Flash.
GPT-5.4 Pro is ahead on BenchLM's provisional leaderboard, 91 to 36.
Ling 2.6 Flash has the edge for knowledge tasks in this comparison, averaging 59 versus 49. GPT-5.4 Pro stays close enough that the answer can still flip depending on your workload.
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