Head-to-head comparison across 5benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.2
80
Muse Spark
82
Pick Muse Spark if you want the stronger benchmark profile. GPT-5.2 only becomes the better choice if knowledge is the priority or you need the larger 400K context window.
Agentic
+3.8 difference
Coding
+3.0 difference
Reasoning
+10.4 difference
Knowledge
+42.0 difference
Multimodal
+1.9 difference
GPT-5.2
Muse Spark
$1.75 / $14
N/A
73 t/s
N/A
130.34s
N/A
400K
262K
Pick Muse Spark if you want the stronger benchmark profile. GPT-5.2 only becomes the better choice if knowledge is the priority or you need the larger 400K context window.
Muse Spark has the cleaner provisional overall profile here, landing at 82 versus 80. It is a real lead, but still close enough that category-level strengths matter more than the headline number.
Muse Spark's sharpest advantage is in agentic, where it averages 59 against 55.2. The single biggest benchmark swing on the page is ARC-AGI-2, 52.9% to 42.5%. GPT-5.2 does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.
GPT-5.2 gives you the larger context window at 400K, compared with 262K for Muse Spark.
Muse Spark is ahead on BenchLM's provisional leaderboard, 82 to 80. The biggest single separator in this matchup is ARC-AGI-2, where the scores are 52.9% and 42.5%.
GPT-5.2 has the edge for knowledge tasks in this comparison, averaging 92.4 versus 50.4. Inside this category, AA-Omniscience Hallucination Rate is the benchmark that creates the most daylight between them.
GPT-5.2 has the edge for coding in this comparison, averaging 64.7 versus 61.7. Inside this category, Vibe Code Bench is the benchmark that creates the most daylight between them.
GPT-5.2 has the edge for reasoning in this comparison, averaging 52.9 versus 42.5. Inside this category, ARC-AGI-2 is the benchmark that creates the most daylight between them.
Muse Spark has the edge for agentic tasks in this comparison, averaging 59 versus 55.2. Inside this category, GDPval-AA is the benchmark that creates the most daylight between them.
Muse Spark has the edge for multimodal and grounded tasks in this comparison, averaging 82.2 versus 80.3. Inside this category, CharXiv is the benchmark that creates the most daylight between them.
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