Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
GPT-5.3 Instant is clearly ahead on the aggregate, 87 to 36. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.3 Instant's sharpest advantage is in coding, where it averages 78.7 against 15.2. The single biggest benchmark swing on the page is SWE-bench Pro, 83 to 14.
GPT-5.3 Instant is also the more expensive model on tokens at $1.75 input / $14.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Ministral 3 8B (Reasoning). That is roughly Infinityx on output cost alone.
Pick GPT-5.3 Instant if you want the stronger benchmark profile. Ministral 3 8B (Reasoning) only becomes the better choice if you want the cheaper token bill.
GPT-5.3 Instant
82.9
Ministral 3 8B (Reasoning)
38.5
GPT-5.3 Instant
78.7
Ministral 3 8B (Reasoning)
15.2
GPT-5.3 Instant
95
Ministral 3 8B (Reasoning)
33.4
GPT-5.3 Instant
94.2
Ministral 3 8B (Reasoning)
42.1
GPT-5.3 Instant
80.8
Ministral 3 8B (Reasoning)
30
GPT-5.3 Instant
96
Ministral 3 8B (Reasoning)
70
GPT-5.3 Instant
93.4
Ministral 3 8B (Reasoning)
61.7
GPT-5.3 Instant
97.2
Ministral 3 8B (Reasoning)
47.8
GPT-5.3 Instant is ahead overall, 87 to 36. The biggest single separator in this matchup is SWE-bench Pro, where the scores are 83 and 14.
GPT-5.3 Instant has the edge for knowledge tasks in this comparison, averaging 80.8 versus 30. Inside this category, MMLU is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for coding in this comparison, averaging 78.7 versus 15.2. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for math in this comparison, averaging 97.2 versus 47.8. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for reasoning in this comparison, averaging 94.2 versus 42.1. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for agentic tasks in this comparison, averaging 82.9 versus 38.5. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for multimodal and grounded tasks in this comparison, averaging 95 versus 33.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for instruction following in this comparison, averaging 96 versus 70. Inside this category, IFEval is the benchmark that creates the most daylight between them.
GPT-5.3 Instant has the edge for multilingual tasks in this comparison, averaging 93.4 versus 61.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.
Get notified when new models drop, benchmark scores change, or the leaderboard shifts. One email per week.
Free. No spam. Unsubscribe anytime. We only store derived location metadata for consent routing.