Comprehensive side-by-side LLM comparison
Both models show comparable benchmark performance. Claude 3 Opus offers 137.9K more tokens in context window than Gemma 3 12B. Gemma 3 12B is $89.85 cheaper per million tokens. Claude 3 Opus is available on 3 providers. Both models have their strengths depending on your specific coding needs.
Anthropic
Claude 3 Opus was developed as the most capable model in the Claude 3 family, designed to set new industry benchmarks across a wide range of cognitive tasks. Built to handle complex analysis and extended tasks requiring deep reasoning, it balanced frontier intelligence with careful safety considerations, representing the flagship tier of the Claude 3 generation.
Gemma 3 12B was developed as part of the third generation of Google's open-source model family, designed to provide enhanced capabilities in a mid-sized format. Built with improved architecture and training techniques, it balances performance with practical deployment considerations for diverse use cases.
1 year newer

Claude 3 Opus
Anthropic
2024-02-29

Gemma 3 12B
2025-03-12
Cost per million tokens (USD)

Claude 3 Opus

Gemma 3 12B
Context window and performance specifications
Average performance across 6 common benchmarks

Claude 3 Opus

Gemma 3 12B
Available providers and their performance metrics

Claude 3 Opus
Anthropic
Bedrock

Claude 3 Opus

Gemma 3 12B

Claude 3 Opus

Gemma 3 12B

Gemma 3 12B
DeepInfra