Comprehensive side-by-side LLM comparison
Gemini 3.1 Pro leads with 6.1% higher average benchmark score. Gemini 3.1 Pro offers 882.1K more tokens in context window than Claude Opus 4.1. Gemini 3.1 Pro is $76.00 cheaper per million tokens. Claude Opus 4.1 is available on 3 providers. Overall, Gemini 3.1 Pro is the stronger choice for coding tasks.
Anthropic
Claude Opus 4.1, released by Anthropic in August 2025, is a large language model from the Claude 4 family optimized for demanding reasoning, multi-step coding, and extended analysis tasks. It features a 200K token context window, 32K maximum output tokens, native image understanding, and extended thinking capabilities. Opus 4.1 targets complex problem-solving, multi-turn reasoning workflows, and applications requiring deep analysis with integrated tool use.
Google DeepMind
Gemini 3.1 Pro is a multimodal language model from Google DeepMind, released in preview in February 2026 as a point-version upgrade to Gemini 3 Pro focused on improving reasoning depth, factual grounding, and coding and agentic task performance. The model accepts text, images, video, audio, and PDFs as inputs across a 1M token context window, extending the multimodal breadth of the Gemini 3 series with a companion endpoint specifically optimized for custom tool use in agentic pipelines. Google describes it as built to refine the reliability and performance of the Gemini 3 Pro series, reflecting an incremental engineering iteration rather than an architectural overhaul.
6 months newer

Claude Opus 4.1
Anthropic
2025-08-05

Gemini 3.1 Pro
Google DeepMind
2026-02-19
Cost per million tokens (USD)
Claude Opus 4.1
Gemini 3.1 Pro
Context window and performance specifications
Average performance across 1 common benchmarks
Claude Opus 4.1
Gemini 3.1 Pro
Performance comparison across key benchmark categories
Claude Opus 4.1
Gemini 3.1 Pro
Claude Opus 4.1
2025-01
Gemini 3.1 Pro
2025-01
Available providers and their performance metrics
Claude Opus 4.1
Anthropic
AWS Bedrock
Google Cloud Vertex AI
Gemini 3.1 Pro
Claude Opus 4.1
Gemini 3.1 Pro
Claude Opus 4.1
Gemini 3.1 Pro