Composer 2 vs Grok 3 [Beta]

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

Composer 2 is clearly ahead on the aggregate, 62 to 43. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Composer 2's sharpest advantage is in agentic, where it averages 61.7 against 35.7. The single biggest benchmark swing on the page is Terminal-Bench 2.0, 61.7% to 32%.

Composer 2 is the reasoning model in the pair, while Grok 3 [Beta] 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. Composer 2 gives you the larger context window at 200K, compared with 128K for Grok 3 [Beta].

Quick Verdict

Pick Composer 2 if you want the stronger benchmark profile. Grok 3 [Beta] only becomes the better choice if you would rather avoid the extra latency and token burn of a reasoning model.

Agentic

Composer 2

Composer 2

61.7

Grok 3 [Beta]

35.7

61.7%
Terminal-Bench 2.0
32%
Coming soon
BrowseComp
41%
Coming soon
OSWorld-Verified
36%

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
34%
Coming soon
SWE-bench Verified
19%
Coming soon
LiveCodeBench
57%
Coming soon
SWE-bench Pro
21%

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
40%
Coming soon
OfficeQA Pro
47%

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
38%
Coming soon
BBH
62%
Coming soon
LongBench v2
53%
Coming soon
MRCRv2
52%

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
42%
Coming soon
GPQA
75.4%
Coming soon
SuperGPQA
39%
Coming soon
MMLU-Pro
79.9%
Coming soon
HLE
3%
Coming soon
FrontierScience
40%
Coming soon
SimpleQA
43.6%

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
67%

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
60%
Coming soon
MMLU-ProX
58%

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
42%
Coming soon
AIME 2024
52.2%
Coming soon
AIME 2025
43%
Coming soon
HMMT Feb 2023
38%
Coming soon
HMMT Feb 2024
40%
Coming soon
HMMT Feb 2025
39%
Coming soon
BRUMO 2025
41%
Coming soon
MATH-500
59%

Frequently Asked Questions

Which is better, Composer 2 or Grok 3 [Beta]?

Composer 2 is ahead overall, 62 to 43. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 61.7% and 32%.

Which is better for agentic tasks, Composer 2 or Grok 3 [Beta]?

Composer 2 has the edge for agentic tasks in this comparison, averaging 61.7 versus 35.7. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.

Last updated: March 18, 2026

Weekly LLM Benchmark Digest

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.