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Gemma 2 27B vs o3 Mini

Updated October 21, 2026. 35 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace Gemma 2 27B Replace o3 Mini
Gemma 2 27BGoogle
Coding
No data
Overall
No data
Output $/M
$0.65
0
o3 MiniOpenAI
Coding
No data
Overall
12.5
Output $/M
$4.40
35
vs boards won of 35 shared

Decision reading

Neither model has a coding score yet, so the two cannot be ranked on coding.

Gemma 2 27B has the edge where output tokens cost 6.8x less, and where what matters is LMArena Text: coding or LMArena Text: software and IT, where it leads.

Model AGemma 2 27BGoogleNot benchmarkedNo coding benchmarkNo cost per solved taskModel Bo3 MiniOpenAINot benchmarkedNo coding benchmarkNo cost per solved task
Shared results
35
Gemma 2 27B only
1
o3 Mini only
35
Like-for-like categories
6 of 9

Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

At a glance

Coding index
Gemma 2 27B not benchmarked, o3 Mini not benchmarked.
Widest category
Math, 51.1 points apart on average over 4 shared benchmarks.
Widest single gap
OTIS Mock AIME: Gemma 2 27B 1.4% against o3 Mini 76.9%, 75.6 points apart on a 0 to 100 scale.
Output price
Gemma 2 27B $0.65 against o3 Mini $4.40 per million output tokens, 6.8x apart.
Context window
Gemma 2 27B takes 8K tokens, o3 Mini 200K.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
CategoryGemma 2 27BBarso3 MiniTies
Coding02
Intelligence01
Reasoning04
Math04
Knowledge05
General019
All shared boards035
CodingLike-for-likeSix of these boards feed the Vibe Coding Index02
Coding benchmarks for Gemma 2 27B and o3 Mini
BenchmarkGemma 2 27Bo3 MiniLeader
Aider polyglotNot measured60.4%Only o3 Mini measured
SWE-bench VerifiedNot measured42.4%Only o3 Mini measured
SWE-bench LiteNot measured32.3%Only o3 Mini measured
LiveCodeBench (Vals AI)Not measured71.5%Only o3 Mini measured
LiveCodeBench (Artificial Analysis run)Not measured73.4%Only o3 Mini measured
SciCodeNot measured42.8%Only o3 Mini measured
Terminal-Bench Hard (Artificial Analysis run)Not measured6.8%Only o3 Mini measured
GSO-BenchNot measured1.3%Only o3 Mini measured
WeirdMLNot measured43.7%Only o3 Mini measured
CybenchNot measured22.5%Only o3 Mini measured
LMArena Text: coding12111378o3 Mini
LMArena Text: software and IT12281364o3 Mini
Neither model has a result on the other 26 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for Gemma 2 27B and o3 Mini
BenchmarkGemma 2 27Bo3 MiniLeader
AA Intelligence IndexNot measured12.5Only o3 Mini measured
Epoch Capabilities Index122.1140.2o3 Mini
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index1 board, none shared
Agentic work benchmarks for Gemma 2 27B and o3 Mini
BenchmarkGemma 2 27Bo3 MiniLeader
τ²-Bench TelecomNot measured31.3%Only o3 Mini measured
Neither model has a result on the other 38 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index04
Reasoning benchmarks for Gemma 2 27B and o3 Mini
BenchmarkGemma 2 27Bo3 MiniLeader
GPQA DiamondNot measured75.5%Only o3 Mini measured
GPQA Diamond (Artificial Analysis run)Not measured77.3%Only o3 Mini measured
Humanity's Last Exam (Artificial Analysis run)Not measured12.0%Only o3 Mini measured
GPQA Diamond (Epoch AI run)36.5%77.0%o3 Mini
ARC-AGINot measured34.5%Only o3 Mini measured
ARC-AGI-2Not measured3.0%Only o3 Mini measured
SimpleBenchNot measured22.8%Only o3 Mini measured
Chess puzzlesNot measured15.0%Only o3 Mini measured
Mystery game puzzlesNot measured7.0%Only o3 Mini measured
LMArena Text: hard prompts11981365o3 Mini
LMArena Text: expert11711364o3 Mini
LMArena Text: hard prompts in English12061375o3 Mini
Neither model has a result on the other 9 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index04
Math benchmarks for Gemma 2 27B and o3 Mini
BenchmarkGemma 2 27Bo3 MiniLeader
AIMENot measured86.5%Only o3 Mini measured
MATH 500 (Vals AI)Not measured91.8%Only o3 Mini measured
MGSM (Vals AI)Not measured91.3%Only o3 Mini measured
OTIS Mock AIME1.4%76.9%o3 Mini
FrontierMath, tiers 1 to 3Not measured18.6%Only o3 Mini measured
FrontierMath, tier 4Not measured0.0%Only o3 Mini measured
MATH level 527.9%96.5%o3 Mini
LMArena Text: math12121396o3 Mini
LMArena Text: mathematical work12211399o3 Mini
Neither model has a result on the other 4 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index05
Knowledge benchmarks for Gemma 2 27B and o3 Mini
BenchmarkGemma 2 27Bo3 MiniLeader
MMLU ProNot measured78.7%Only o3 Mini measured
LegalBench (Vals AI)68.0%71.5%o3 Mini
CorpFin (Vals AI)Not measured45.3%Only o3 Mini measured
TaxEval (Vals AI)Not measured69.4%Only o3 Mini measured
MedQA (Vals AI)Not measured94.8%Only o3 Mini measured
MMLU Pro (Artificial Analysis run)Not measured80.2%Only o3 Mini measured
SimpleQA VerifiedNot measured15.3%Only o3 Mini measured
MMLU75.7%Not measuredOnly Gemma 2 27B measured
LMArena Text: science12281339o3 Mini
LMArena Text: medicine and healthcare11981330o3 Mini
LMArena Text: legal and government12411328o3 Mini
LMArena Text: business and finance12081313o3 Mini
Neither model has a result on the other 5 boards here
Web designNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Web design benchmarks for Gemma 2 27B and o3 Mini
BenchmarkGemma 2 27Bo3 MiniLeader
Neither model has a result on 9 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index019
General benchmarks for Gemma 2 27B and o3 Mini
BenchmarkGemma 2 27Bo3 MiniLeader
IFBenchNot measured67.1%Only o3 Mini measured
Long context reasoning (AA-LCR)Not measured43.0%Only o3 Mini measured
DTBench48.0%68.8%o3 Mini
LMCA7.1%19.0%o3 Mini
Fiction.LiveBenchNot measured50.0%Only o3 Mini measured
Creative writing (Lech Mazur)Not measured61.7%Only o3 Mini measured
LMArena Text12311337o3 Mini
LMArena Text: instruction following12061337o3 Mini
LMArena Text: creative writing12401286o3 Mini
LMArena Text: English12421351o3 Mini
LMArena Text: non-English12171319o3 Mini
LMArena Text: Chinese12211379o3 Mini
LMArena Text: German12091303o3 Mini
LMArena Text: Japanese11751286o3 Mini
LMArena Text: Korean11741313o3 Mini
LMArena Text: French12481334o3 Mini
LMArena Text: Spanish12281321o3 Mini
LMArena Text: Russian12341304o3 Mini
LMArena Text: Polish12771294o3 Mini
LMArena Text: multi-turn12241320o3 Mini
LMArena Text: longer queries12301343o3 Mini
LMArena Text: writing and language12491313o3 Mini
LMArena Text: entertainment and media12121283o3 Mini
Neither model has a result on the other 23 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Gemma 2 27B and o3 Mini
BenchmarkGemma 2 27Bo3 MiniLeader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

Gemma 2 27B$0.0010Fits in one request
o3 Mini$0.0033Fits in one request

Gemma 2 27B costs less

Repository review

50K input + 3K output tokens

Gemma 2 27B$0.034Exceeds the context window
o3 Mini$0.068Fits in one request

Gemma 2 27B costs less

Agent loop

200K input + 10K output tokens

Gemma 2 27B$0.137Exceeds the context window
o3 Mini$0.264Exceeds the context window

Gemma 2 27B costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of Gemma 2 27B and o3 Mini
SpecificationGoogle Gemma 2 27BOpenAI o3 Mini
MakerGoogleOpenAI
WeightsOpen weightsNo public weights listed
ReleasedJuly 13, 2024January 31, 2025
Context window8K200K
Input $/Mtok$0.65$1.10
Output $/Mtok$0.65$4.40
Coding indexNot benchmarkedNot benchmarked
Independent measurements behind it00
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemma 2 27B better than o3 Mini for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Gemma 2 27B has the edge where output tokens cost 6.8x less, and where what matters is LMArena Text: coding or LMArena Text: software and IT, where it leads.

Which is cheaper, Gemma 2 27B or o3 Mini?

Gemma 2 27B costs $0.65 per million input tokens and $0.65 per million output tokens; o3 Mini costs $1.10 and $4.40. Cost per solved task is known for neither of them.

Which has the bigger context window, Gemma 2 27B or o3 Mini?

o3 Mini, with 200K tokens against 8K.

How many benchmarks is the Gemma 2 27B vs o3 Mini comparison based on?

35 benchmarks have a result for both models as of October 21, 2026. Gemma 2 27B's coding index rests on 0 independent benchmarks and o3 Mini's on 0. Where only one model has a result, the page says so instead of naming a winner.

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