Model Comparison
Claude 3 Opus vs Gemma 3 12BWhich is better in 2026?
Claude 3 Opus shows notably better performance in the majority of benchmarks. Gemma 3 12B is 480.0x cheaper per token.
Verdict: Claude 3 Opus vs Gemma 3 12B — which is better?
Claude 3 Opus (by Anthropic) and Gemma 3 12B (by Google) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.
Claude 3 Opus outperforms in 4 benchmarks (BIG-Bench Hard, GPQA, GSM8k, MMLU-Pro), while Gemma 3 12B is better at 2 benchmarks (HumanEval, MATH). Claude 3 Opus shows notably better performance in the majority of benchmarks.
On price, Gemma 3 12B is roughly 480.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Claude 3 Opus also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.
Choose Claude 3 Opus if…
- you want the strongest raw capability — it leads on 4 of 6 shared benchmarks
- you process long inputs — it offers a 200,000 token context window
Choose Gemma 3 12B if…
- cost matters — it's about 480.0x cheaper per token
- you want the most recent training data — it shipped Mar 2025
- you need open weights you can self-host or fine-tune
Performance Benchmarks
Comparative analysis across standard metrics
Claude 3 Opus outperforms in 4 benchmarks (BIG-Bench Hard, GPQA, GSM8k, MMLU-Pro), while Gemma 3 12B is better at 2 benchmarks (HumanEval, MATH).
Claude 3 Opus shows notably better performance in the majority of benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Claude 3 Opus ($15.00/1M tokens) is 300.0x more expensive than Gemma 3 12B ($0.05/1M tokens).
For output processing, Claude 3 Opus ($75.00/1M tokens) is 750.0x more expensive than Gemma 3 12B ($0.10/1M tokens).
In conclusion, Claude 3 Opus is more expensive than Gemma 3 12B.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Claude 3 Opus accepts 200,000 input tokens compared to Gemma 3 12B's 131,072 tokens. Claude 3 Opus can generate longer responses up to 200,000 tokens, while Gemma 3 12B is limited to 131,072 tokens.
Input Capabilities
Supported data types and modalities
Both Claude 3 Opus and Gemma 3 12B support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude 3 Opus
Gemma 3 12B
License
Usage and distribution terms
Claude 3 Opus is licensed under a proprietary license, while Gemma 3 12B uses Gemma.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Gemma
Open weights
Release Timeline
When each model was launched
Claude 3 Opus was released on 2024-02-29, while Gemma 3 12B was released on 2025-03-12.
Gemma 3 12B is 13 months newer than Claude 3 Opus.
Feb 29, 2024
2.3 years ago
Mar 12, 2025
1.2 years ago
1.0yr newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Claude 3 Opus is available from Anthropic, Bedrock, Google. Gemma 3 12B is available from DeepInfra.
Claude 3 Opus
Gemma 3 12B
Outputs Comparison
Key Takeaways
Claude 3 Opus
View detailsAnthropic
Gemma 3 12B
View detailsDetailed Comparison
| Feature | | |
|---|
FAQ
Common questions about Claude 3 Opus vs Gemma 3 12B.