DeepSeek Coder 2.0 vs LFM2.5-1.2B-Thinking

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

DeepSeek Coder 2.0 is clearly ahead on the aggregate, 66 to 33. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

DeepSeek Coder 2.0's sharpest advantage is in coding, where it averages 52.8 against 8.2. The single biggest benchmark swing on the page is HumanEval, 82 to 17.

DeepSeek Coder 2.0 is also the more expensive model on tokens at $0.27 input / $1.10 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for LFM2.5-1.2B-Thinking. That is roughly Infinityx on output cost alone. LFM2.5-1.2B-Thinking is the reasoning model in the pair, while DeepSeek Coder 2.0 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. DeepSeek Coder 2.0 gives you the larger context window at 128K, compared with 32K for LFM2.5-1.2B-Thinking.

Quick Verdict

Pick DeepSeek Coder 2.0 if you want the stronger benchmark profile. LFM2.5-1.2B-Thinking only becomes the better choice if you want the cheaper token bill or you want the stronger reasoning-first profile.

Agentic

DeepSeek Coder 2.0

DeepSeek Coder 2.0

67.5

LFM2.5-1.2B-Thinking

34.1

73
Terminal-Bench 2.0
34
62
BrowseComp
37
65
OSWorld-Verified
32

Coding

DeepSeek Coder 2.0

DeepSeek Coder 2.0

52.8

LFM2.5-1.2B-Thinking

8.2

82
HumanEval
17
51
SWE-bench Verified
10
45
LiveCodeBench
9
61
SWE-bench Pro
7

Multimodal & Grounded

DeepSeek Coder 2.0

DeepSeek Coder 2.0

58.6

LFM2.5-1.2B-Thinking

32.4

50
MMMU-Pro
27
69
OfficeQA Pro
39

Reasoning

DeepSeek Coder 2.0

DeepSeek Coder 2.0

75.5

LFM2.5-1.2B-Thinking

38.4

78
SimpleQA
29
76
MuSR
31
84
BBH
67
73
LongBench v2
39
71
MRCRv2
42

Knowledge

DeepSeek Coder 2.0

DeepSeek Coder 2.0

59.6

LFM2.5-1.2B-Thinking

27

80
MMLU
27
79
GPQA
26
77
SuperGPQA
24
75
OpenBookQA
22
73
MMLU-Pro
51
14
HLE
2
72
FrontierScience
31

Instruction Following

DeepSeek Coder 2.0

DeepSeek Coder 2.0

86

LFM2.5-1.2B-Thinking

72

86
IFEval
72

Multilingual

DeepSeek Coder 2.0

DeepSeek Coder 2.0

79.8

LFM2.5-1.2B-Thinking

60.7

83
MGSM
62
78
MMLU-ProX
60

Mathematics

DeepSeek Coder 2.0

DeepSeek Coder 2.0

80.5

LFM2.5-1.2B-Thinking

42.3

81
AIME 2023
28
83
AIME 2024
30
82
AIME 2025
29
77
HMMT Feb 2023
24
79
HMMT Feb 2024
26
78
HMMT Feb 2025
25
80
BRUMO 2025
27
81
MATH-500
61

Frequently Asked Questions

Which is better, DeepSeek Coder 2.0 or LFM2.5-1.2B-Thinking?

DeepSeek Coder 2.0 is ahead overall, 66 to 33. The biggest single separator in this matchup is HumanEval, where the scores are 82 and 17.

Which is better for knowledge tasks, DeepSeek Coder 2.0 or LFM2.5-1.2B-Thinking?

DeepSeek Coder 2.0 has the edge for knowledge tasks in this comparison, averaging 59.6 versus 27. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, DeepSeek Coder 2.0 or LFM2.5-1.2B-Thinking?

DeepSeek Coder 2.0 has the edge for coding in this comparison, averaging 52.8 versus 8.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, DeepSeek Coder 2.0 or LFM2.5-1.2B-Thinking?

DeepSeek Coder 2.0 has the edge for math in this comparison, averaging 80.5 versus 42.3. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, DeepSeek Coder 2.0 or LFM2.5-1.2B-Thinking?

DeepSeek Coder 2.0 has the edge for reasoning in this comparison, averaging 75.5 versus 38.4. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, DeepSeek Coder 2.0 or LFM2.5-1.2B-Thinking?

DeepSeek Coder 2.0 has the edge for agentic tasks in this comparison, averaging 67.5 versus 34.1. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, DeepSeek Coder 2.0 or LFM2.5-1.2B-Thinking?

DeepSeek Coder 2.0 has the edge for multimodal and grounded tasks in this comparison, averaging 58.6 versus 32.4. Inside this category, OfficeQA Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, DeepSeek Coder 2.0 or LFM2.5-1.2B-Thinking?

DeepSeek Coder 2.0 has the edge for instruction following in this comparison, averaging 86 versus 72. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, DeepSeek Coder 2.0 or LFM2.5-1.2B-Thinking?

DeepSeek Coder 2.0 has the edge for multilingual tasks in this comparison, averaging 79.8 versus 60.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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