Claude 4 Sonnet vs Composer 2

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

Claude 4 Sonnet has the cleaner overall profile here, landing at 65 versus 62. It is a real lead, but still close enough that category-level strengths matter more than the headline number.

Composer 2 is the reasoning model in the pair, while Claude 4 Sonnet 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.

Quick Verdict

Pick Claude 4 Sonnet if you want the stronger benchmark profile. Composer 2 only becomes the better choice if agentic is the priority or you want the stronger reasoning-first profile.

Agentic

Composer 2

Claude 4 Sonnet

56.5

Composer 2

61.7

56%
Terminal-Bench 2.0
61.7%
57%
OSWorld-Verified
Coming soon

Coding

Coming soon

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

65%
HumanEval
Coming soon
72.7%
SWE-bench Verified
Coming soon
36%
LiveCodeBench
Coming soon
48%
SWE-bench Pro
Coming soon
Coming soon
SWE Multilingual
73.7%
Coming soon
React Native Evals
97.2%

Multimodal & Grounded

Coming soon

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

81%
MMMU-Pro
Coming soon
78%
OfficeQA Pro
Coming soon

Reasoning

Coming soon

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

69%
MuSR
Coming soon
82%
BBH
Coming soon
71%
LongBench v2
Coming soon
72%
MRCRv2
Coming soon

Knowledge

Coming soon

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

86.5%
MMLU
Coming soon
73%
GPQA
Coming soon
71%
SuperGPQA
Coming soon
75%
MMLU-Pro
Coming soon
12%
HLE
Coming soon
67%
FrontierScience
Coming soon
71%
SimpleQA
Coming soon

Instruction Following

Coming soon

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

83%
IFEval
Coming soon

Multilingual

Coming soon

Benchmark data for this category is coming soon.

Mathematics

Coming soon

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

73%
AIME 2023
Coming soon
75%
AIME 2024
Coming soon
74%
AIME 2025
Coming soon
69%
HMMT Feb 2023
Coming soon
71%
HMMT Feb 2024
Coming soon
70%
HMMT Feb 2025
Coming soon
72%
BRUMO 2025
Coming soon

Frequently Asked Questions

Which is better, Claude 4 Sonnet or Composer 2?

Claude 4 Sonnet is ahead overall, 65 to 62. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 56% and 61.7%.

Which is better for agentic tasks, Claude 4 Sonnet or Composer 2?

Composer 2 has the edge for agentic tasks in this comparison, averaging 61.7 versus 56.5. 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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