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Gemma 2 27B vs GPT-5.6 Luna

Gemma 2 27B

Google

77#110
vs
GPT-5.6 Luna

OpenAI

89#34
Signal-by-Signal Comparison
SignalGemma 2 27BDeltaGPT-5.6 Luna
Capabilities
33
-67
100
Benchmarks
83
-4
88
Pricing
99
--
99
Context window size
62
-33
96
Recency
0
-100
100
Output Capacity
55
-30
85
Overall Result
0 wins
of 6
5 wins
GPT-5.6 Luna wins 5 of 6 signals

Score History

Score History (25 data points)
Gemma 2 27BGPT-5.6 Luna
Gemma 2 27B

77.4

current score

Leader

GPT-5.6 Luna

right now

GPT-5.6 Luna

89

current score

LMMarketCap.com
Interactive Price Comparison
100Kcalls/month
1,000tokens (~1,333 chars)
500tokens (~667 chars)

Gemma 2 27B

Google

Per request$0.000975
Daily$3.25
Monthly$97.50
Annual$1170.00

GPT-5.6 Luna

OpenAI

Best Value
Per request$0.000400
Daily$1.33
Monthly$40.00
Annual$480.00

GPT-5.6 Luna saves you $57.50/month

That's $690.00/year compared to Gemma 2 27B at your current usage level of 100K calls/month.

59% cheaper
Choose GPT-5.6 Luna for cost optimization

Gemma 2 27B pricing:
Input:$0.65/M tokens
Output:$0.65/M tokens
GPT-5.6 Luna pricing:
Input:$0.10/M tokens
Output:$0.60/M tokens
Gemma 2 27B

Google

77

Composite Score

Winner
GPT-5.6 Luna

OpenAI

89

Composite Score

Signal-by-Signal Comparison
MetricGemma 2 27BGPT-5.6 LunaWinner
Overall Score
77
89
GPT-5.6 Luna
Rank#110#34
GPT-5.6 Luna
Quality Rank#110#34
GPT-5.6 Luna
Adoption Rank#110#34
GPT-5.6 Luna
Parameters27B----
Context Window8K1050K
GPT-5.6 Luna
Pricing$0.65/$0.65/M$0.10/$0.60/M--
Signal Scores
Capabilities
33
100
GPT-5.6 Luna
Benchmarks
83
88
GPT-5.6 Luna
Pricing
99
99
Gemma 2 27B
Context window size
62
96
GPT-5.6 Luna
Recency
0
100
GPT-5.6 Luna
Output Capacity
55
85
GPT-5.6 Luna
Benchmark Head-to-Head(14 benchmarks)
Gemma 2: 0GPT-5.6 Luna: 2
Gemma 2
GPT-5.6 Luna
Normalized 0-100%
MMLU
75.2%93%
MMLU-Pro
-84.5%
GPQA Diamond
-85%
MATH-500
-92.5%
HumanEval
69.5%96.5%
SWE-bench Verified
-75%
GSM8K
85.3%-
IFEval
-92%
BBH
-90.5%
ARC-Challenge
93.2%-
HellaSwag
93%-
Arena Elo
-1465
LiveBench
-76%
HLE
-35%
Benchmark Interpretation

Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.

Gemma 2 27BStrong Performer

Scores 77/100 (rank #110), placing it in the top 62% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100
GPT-5.6 LunaElite Tier

Scores 89/100 (rank #34), placing it in the top 89% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100

GPT-5.6 Luna has a 12-point advantage, which typically translates to noticeably better performance on complex reasoning, code generation, and multi-step tasks.

When to Use Each Model

Choose Gemma 2 27B when you need:

  • Self-hosted deployments where you need full control over the model

Choose GPT-5.6 Luna when you need:

  • Processing long documents or large codebases (1050K token context)
  • Multimodal workflows that require image understanding
  • Agentic applications using tool/function calling
  • Step-by-step reasoning and chain-of-thought problem solving
Cost-Performance Analysis
Gemma 2 27B
Input cost$0.65/M tokens
Output cost$0.65/M tokens
Cost per quality point$0.017
Est. monthly (1M tokens/day)$19.50
GPT-5.6 LunaBest Value
Input cost$0.10/M tokens
Output cost$0.60/M tokens
Cost per quality point$0.008
Est. monthly (1M tokens/day)$10.50

GPT-5.6 Luna offers 46% better value per quality point. At 1M tokens/day, you'd spend $10.50/month with GPT-5.6 Luna vs $19.50/month with Gemma 2 27B - a $9.00 monthly difference.

Latency & Speed
Gemma 2 27BFaster
Speed score0/100
GPT-5.6 Luna
Speed score0/100

Both models have comparable response speeds. For most applications, the latency difference is negligible.

When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.

Example Use Cases

Code generation & review

Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring

Gemma 2 27B

Customer support chatbot

Suitable for user-facing chat with competitive response times. GPT-5.6 Luna also offers lower per-token costs for high-volume support

Gemma 2 27B

Long document analysis

Larger context window (1050K tokens) can process longer documents, contracts, and research papers in a single pass

GPT-5.6 Luna

Batch data extraction

Lower output pricing ($0.60/M) reduces costs when processing thousands of records daily

GPT-5.6 Luna

Creative writing & content

Higher overall composite score (89/100) correlates with better nuance, coherence, and style in long-form content

GPT-5.6 Luna

Image understanding & OCR

Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly

GPT-5.6 Luna
Which Should You Choose?
Our recommendation:
GPT-5.6 Luna

GPT-5.6 Luna clearly outperforms Gemma 2 27B with a significant 11.599999999999994-point lead. For most general use cases, GPT-5.6 Luna is the stronger choice. However, Gemma 2 27B may still excel in niche scenarios.

by Google

  • Choose for Quality - Marginally better benchmark scores; both are excellent
  • Choose for Reliability - Higher uptime and faster response speeds
  • Choose for Prototyping - Stronger community support and better developer experience
  • Choose for Production - Wider enterprise adoption and proven at scale
GPT-5.6 Luna
Recommended

by OpenAI

  • Choose for Cost - 46% lower pricing; better value at scale
Capability Comparison
CapabilityGemma 2 27BGPT-5.6 Luna
Vision (Image Input)differs
Function Callingdiffers
Streaming
JSON Mode
Reasoningdiffers
Web Searchdiffers
Image Output
Monthly Cost Calculator
1,000tokens (600 in / 400 out)
100requests/day (3,000/month)

Gemma 2 27B

Google

$1.95
estimated monthly cost

GPT-5.6 Luna

OpenAI

Best Value
$0.9000
estimated monthly cost

GPT-5.6 Luna saves you $1.05/month

That's 54% cheaper than Gemma 2 27B at 1,000 tokens/request and 100 requests/day.

Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.

Parameters & Context
ParameterGemma 2 27BGPT-5.6 Luna
Context Window8K1.1M
Max Output Tokens2,048128,000
Open SourceYesNo
CreatedJul 13, 2024Jul 9, 2026
Last updated: 35m ago

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Gemma 2 27B vs GPT-5.6 Luna (2026) | LM Market Cap