1-bit Bonsai 4B vs Qwen2.5-1M

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

Agentic
Coding
Multimodal & Grounded
Reasoning
Knowledge
Instruction Following
Multilingual
Mathematics

1-bit Bonsai 4B· Qwen2.5-1M

Quick Verdict

Pick Qwen2.5-1M if you want the stronger benchmark profile. 1-bit Bonsai 4B only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.

Qwen2.5-1M is clearly ahead on the aggregate, 62 to 44. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Qwen2.5-1M's sharpest advantage is in reasoning, where it averages 80.9 against 41.4. The single biggest benchmark swing on the page is GPQA, 28.7% to 83%.

Qwen2.5-1M gives you the larger context window at 1M, compared with 32K for 1-bit Bonsai 4B.

Operational tradeoffs

PriceFree*Free*
SpeedN/AN/A
TTFTN/AN/A
Context32K1M

Decision framing

BenchLM keeps the benchmark table and the operator tradeoffs on the same page so a better score does not hide a materially slower, pricier, or smaller-context model.

Runtime metrics show N/A when BenchLM does not have a sourced snapshot for that exact model. The scoring rules and freshness policy are documented on the methodology page.

Benchmark1-bit Bonsai 4BQwen2.5-1M
Agentic
Terminal-Bench 2.065%
BrowseComp72%
OSWorld-Verified59%
Coding
HumanEval76%
SWE-bench Verified47%
LiveCodeBench40%
SWE-bench Pro49%
Multimodal & Grounded
MMMU-Pro63%
OfficeQA Pro75%
ReasoningQwen2.5-1M wins
MuSR41.4%79%
BBH82%
LongBench v282%
MRCRv281%
KnowledgeQwen2.5-1M wins
GPQA28.7%83%
MMLU84%
SuperGPQA81%
MMLU-Pro74%
HLE10%
FrontierScience74%
SimpleQA81%
Instruction FollowingQwen2.5-1M wins
IFEval69.6%84%
Multilingual
MGSM81%
MMLU-ProX80%
MathematicsQwen2.5-1M wins
MATH-50065.8%83%
AIME 202385%
AIME 202487%
AIME 202586%
HMMT Feb 202381%
HMMT Feb 202483%
HMMT Feb 202582%
BRUMO 202584%
Frequently Asked Questions (5)

Which is better, 1-bit Bonsai 4B or Qwen2.5-1M?

Qwen2.5-1M is ahead overall, 62 to 44. The biggest single separator in this matchup is GPQA, where the scores are 28.7% and 83%.

Which is better for knowledge tasks, 1-bit Bonsai 4B or Qwen2.5-1M?

Qwen2.5-1M has the edge for knowledge tasks in this comparison, averaging 62.1 versus 28.7. Inside this category, GPQA is the benchmark that creates the most daylight between them.

Which is better for math, 1-bit Bonsai 4B or Qwen2.5-1M?

Qwen2.5-1M has the edge for math in this comparison, averaging 84.6 versus 65.8. Inside this category, MATH-500 is the benchmark that creates the most daylight between them.

Which is better for reasoning, 1-bit Bonsai 4B or Qwen2.5-1M?

Qwen2.5-1M has the edge for reasoning in this comparison, averaging 80.9 versus 41.4. Inside this category, MuSR is the benchmark that creates the most daylight between them.

Which is better for instruction following, 1-bit Bonsai 4B or Qwen2.5-1M?

Qwen2.5-1M has the edge for instruction following in this comparison, averaging 84 versus 69.6. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Last updated: March 31, 2026

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