Composer 2 vs Gemini 3 Flash

Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.

Gemini 3 Flash has the cleaner overall profile here, landing at 64 versus 62. It is a real lead, but still close enough that category-level strengths matter more than the headline number.

Gemini 3 Flash is also the more expensive model on tokens at $0.50 input / $3.00 output per 1M tokens, versus $0.50 input / $2.50 output per 1M tokens for Composer 2. Composer 2 is the reasoning model in the pair, while Gemini 3 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. Gemini 3 Flash gives you the larger context window at 1M, compared with 200K for Composer 2.

Quick Verdict

Pick Gemini 3 Flash if you want the stronger benchmark profile. Composer 2 only becomes the better choice if agentic is the priority or you want the cheaper token bill.

Agentic

Composer 2

Composer 2

61.7

Gemini 3 Flash

57.5

61.7%
Terminal-Bench 2.0
56%
Coming soon
BrowseComp
66%
Coming soon
OSWorld-Verified
53%

Coding

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

73.7%
SWE Multilingual
Coming soon
97.2%
React Native Evals
Coming soon
Coming soon
HumanEval
62%
Coming soon
SWE-bench Verified
44%
Coming soon
SWE-bench Pro
44%
Coming soon
SWE-Rebench
52.5%

Multimodal & Grounded

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
MMMU-Pro
80%
Coming soon
OfficeQA Pro
79%

Reasoning

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
MuSR
65%
Coming soon
BBH
84%
Coming soon
LongBench v2
75%
Coming soon
MRCRv2
76%

Knowledge

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
MMLU
70%
Coming soon
GPQA
69%
Coming soon
SuperGPQA
67%
Coming soon
MMLU-Pro
72%
Coming soon
HLE
6%
Coming soon
FrontierScience
65%
Coming soon
SimpleQA
67%

Instruction Following

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
IFEval
85%

Multilingual

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
MGSM
85%
Coming soon
MMLU-ProX
78%

Mathematics

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
AIME 2023
70%
Coming soon
AIME 2024
72%
Coming soon
AIME 2025
71%
Coming soon
HMMT Feb 2023
66%
Coming soon
HMMT Feb 2024
68%
Coming soon
HMMT Feb 2025
67%
Coming soon
BRUMO 2025
69%
Coming soon
MATH-500
80%

Frequently Asked Questions

Which is better, Composer 2 or Gemini 3 Flash?

Gemini 3 Flash is ahead overall, 64 to 62. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 61.7% and 56%.

Which is better for agentic tasks, Composer 2 or Gemini 3 Flash?

Composer 2 has the edge for agentic tasks in this comparison, averaging 61.7 versus 57.5. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.

Last updated: March 18, 2026

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