Gemma 3 27B vs GPT-5.6 Luna
| Signal | Gemma 3 27B | Delta | GPT-5.6 Luna |
|---|---|---|---|
Capabilities | 67 | -33 | |
Pricing | 100 | +0 | |
Context window size | 86 | -10 | |
Recency | 39 | -61 | |
Output Capacity | 85 | +0 | |
Benchmarks | 0 | -88 | |
| Overall Result | 2 wins | of 6 | 4 wins |
Score History
40
current score
GPT-5.6 Luna
right now
89
current score
Gemma 3 27B
GPT-5.6 Luna
OpenAI
Gemma 3 27B saves you $9.50/month
That's $114.00/year compared to GPT-5.6 Luna at your current usage level of 100K calls/month.
| Metric | Gemma 3 27B | GPT-5.6 Luna | Winner |
|---|---|---|---|
| Overall Score | 40 | 89 | GPT-5.6 Luna |
| Rank | #342 | #34 | GPT-5.6 Luna |
| Quality Rank | #342 | #34 | GPT-5.6 Luna |
| Adoption Rank | #342 | #34 | GPT-5.6 Luna |
| Parameters | 27B | -- | -- |
| Context Window | 262K | 1050K | GPT-5.6 Luna |
| Pricing | $0.08/$0.45/M | $0.10/$0.60/M | -- |
| Signal Scores | |||
| Capabilities | 67 | 100 | GPT-5.6 Luna |
| Pricing | 100 | 99 | Gemma 3 27B |
| Context window size | 86 | 96 | GPT-5.6 Luna |
| Recency | 39 | 100 | GPT-5.6 Luna |
| Output Capacity | 85 | 85 | Gemma 3 27B |
| Benchmarks | -- | 88 | GPT-5.6 Luna |
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.
Scores 40/100 (rank #342), placing it in the top -18% of all 290 models tracked.
Scores 89/100 (rank #34), placing it in the top 89% of all 290 models tracked.
GPT-5.6 Luna has a 49-point advantage, which typically translates to noticeably stronger performance on complex reasoning, code generation, and multi-step tasks.
Choose Gemma 3 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)
- Step-by-step reasoning and chain-of-thought problem solving
GPT-5.6 Luna offers 24% better value per quality point. At 1M tokens/day, you'd spend $7.95/month with Gemma 3 27B vs $10.50/month with GPT-5.6 Luna - a $2.55 monthly difference.
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.
Code generation & review
Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Suitable for user-facing chat with competitive response times. Gemma 3 27B also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (1050K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.45/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (89/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
GPT-5.6 Luna clearly outperforms Gemma 3 27B with a significant 49-point lead. For most general use cases, GPT-5.6 Luna is the stronger choice. However, Gemma 3 27B may still excel in niche scenarios.
By Use Case
Best for Quality
Gemma 3 27B
Marginally better benchmark scores; both are excellent
Best for Cost
Gemma 3 27B
24% lower pricing; better value at scale
Best for Reliability
Gemma 3 27B
Higher uptime and faster response speeds
Best for Prototyping
Gemma 3 27B
Stronger community support and better developer experience
Best for Production
Gemma 3 27B
Wider enterprise adoption and proven at scale
by Google
- Choose for Quality - Marginally better benchmark scores; both are excellent
- Choose for Cost - 24% lower pricing; better value at scale
- 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
| Capability | Gemma 3 27B | GPT-5.6 Luna |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoningdiffers | ||
| Web Searchdiffers | ||
| Image Output |
Gemma 3 27B
GPT-5.6 Luna
OpenAI
Gemma 3 27B saves you $0.2160/month
That's 24% cheaper than GPT-5.6 Luna 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.
| Parameter | Gemma 3 27B | GPT-5.6 Luna |
|---|---|---|
| Context Window | 262K | 1.1M |
| Max Output Tokens | 131,072 | 128,000 |
| Open Source | Yes | No |
| Created | Mar 12, 2025 | Jul 9, 2026 |