Seed 1.6 Flash vs Kimi K2

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

Seed 1.6 Flash is clearly ahead on the aggregate, 56 to 34. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Seed 1.6 Flash's sharpest advantage is in multimodal & grounded, where it averages 73.1 against 39.5. The single biggest benchmark swing on the page is MMMU-Pro, 74 to 35.

Seed 1.6 Flash is the reasoning model in the pair, while Kimi K2 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. Seed 1.6 Flash gives you the larger context window at 256K, compared with 128K for Kimi K2.

Quick Verdict

Pick Seed 1.6 Flash if you want the stronger benchmark profile. Kimi K2 only becomes the better choice if you would rather avoid the extra latency and token burn of a reasoning model.

Agentic

Seed 1.6 Flash

Seed 1.6 Flash

54.5

Kimi K2

29.3

52
Terminal-Bench 2.0
27
62
BrowseComp
36
52
OSWorld-Verified
27

Coding

Seed 1.6 Flash

Seed 1.6 Flash

27.6

Kimi K2

12.8

59
HumanEval
24
24
SWE-bench Verified
15
25
LiveCodeBench
12
31
SWE-bench Pro
13

Multimodal & Grounded

Seed 1.6 Flash

Seed 1.6 Flash

73.1

Kimi K2

39.5

74
MMMU-Pro
35
72
OfficeQA Pro
45

Reasoning

Seed 1.6 Flash

Seed 1.6 Flash

66.8

Kimi K2

40.9

61
SimpleQA
30
59
MuSR
28
75
BBH
61
70
LongBench v2
47
74
MRCRv2
50

Knowledge

Seed 1.6 Flash

Seed 1.6 Flash

47.3

Kimi K2

29.3

65
MMLU
32
64
GPQA
31
62
SuperGPQA
29
60
OpenBookQA
27
65
MMLU-Pro
51
3
HLE
3
57
FrontierScience
34

Instruction Following

Seed 1.6 Flash

Seed 1.6 Flash

81

Kimi K2

67

81
IFEval
67

Multilingual

Seed 1.6 Flash

Seed 1.6 Flash

72.8

Kimi K2

59.7

76
MGSM
61
71
MMLU-ProX
59

Mathematics

Seed 1.6 Flash

Seed 1.6 Flash

67.1

Kimi K2

42.7

64
AIME 2023
32
66
AIME 2024
34
65
AIME 2025
33
60
HMMT Feb 2023
28
62
HMMT Feb 2024
30
61
HMMT Feb 2025
29
63
BRUMO 2025
31
72
MATH-500
57

Frequently Asked Questions

Which is better, Seed 1.6 Flash or Kimi K2?

Seed 1.6 Flash is ahead overall, 56 to 34. The biggest single separator in this matchup is MMMU-Pro, where the scores are 74 and 35.

Which is better for knowledge tasks, Seed 1.6 Flash or Kimi K2?

Seed 1.6 Flash has the edge for knowledge tasks in this comparison, averaging 47.3 versus 29.3. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Seed 1.6 Flash or Kimi K2?

Seed 1.6 Flash has the edge for coding in this comparison, averaging 27.6 versus 12.8. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Seed 1.6 Flash or Kimi K2?

Seed 1.6 Flash has the edge for math in this comparison, averaging 67.1 versus 42.7. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Seed 1.6 Flash or Kimi K2?

Seed 1.6 Flash has the edge for reasoning in this comparison, averaging 66.8 versus 40.9. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Seed 1.6 Flash or Kimi K2?

Seed 1.6 Flash has the edge for agentic tasks in this comparison, averaging 54.5 versus 29.3. Inside this category, BrowseComp is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, Seed 1.6 Flash or Kimi K2?

Seed 1.6 Flash has the edge for multimodal and grounded tasks in this comparison, averaging 73.1 versus 39.5. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Seed 1.6 Flash or Kimi K2?

Seed 1.6 Flash has the edge for instruction following in this comparison, averaging 81 versus 67. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Seed 1.6 Flash or Kimi K2?

Seed 1.6 Flash has the edge for multilingual tasks in this comparison, averaging 72.8 versus 59.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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