Comprehensive side-by-side LLM comparison
Claude Opus 4.6 leads with 7.9% higher average benchmark score. Gemini 3 Pro offers 680.2K more tokens in context window than Claude Opus 4.6. Gemini 3 Pro is $7.50 cheaper per million tokens. Overall, Claude Opus 4.6 is the stronger choice for coding tasks.
Anthropic
Claude Opus 4.6, released by Anthropic in February 2026, is a large language model from the Claude 4 family designed for complex agent orchestration, extended reasoning, and long-form code generation. It features a 200K token context window (extendable to 1M tokens in beta), 128K maximum output tokens, native image understanding, and extended thinking with both standard and adaptive effort modes. Opus 4.6 targets multi-step agentic workflows, parallel tool use, and applications requiring sustained reasoning over large contexts.
Google DeepMind
Gemini 3 Pro, released by Google in November 2025, is a large language model from the Gemini 3 family designed for complex reasoning, broad world knowledge, and multi-step problem solving. It features a 1M token context window, 64K maximum output tokens, and native multimodal input including text, images, audio, and video. Gemini 3 Pro targets research-grade reasoning, advanced data analysis, and applications requiring comprehensive understanding across diverse input formats.
2 months newer

Gemini 3 Pro
Google DeepMind
2025-11-18

Claude Opus 4.6
Anthropic
2026-02
Cost per million tokens (USD)
Claude Opus 4.6
Gemini 3 Pro
Context window and performance specifications
Average performance across 15 common benchmarks
Claude Opus 4.6
Gemini 3 Pro
Performance comparison across key benchmark categories
Claude Opus 4.6
Claude Opus 4.6
2025-05
Available providers and their performance metrics
Claude Opus 4.6
Anthropic
AWS Bedrock
Google Cloud Vertex AI
Gemini 3 Pro
Claude Opus 4.6
Gemini 3 Pro
Claude Opus 4.6
Gemini 3 Pro
Gemini 3 Pro
Google Cloud Vertex AI