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Claude Opus 4.1 vs Gemini 3 Flash
Comprehensive side-by-side LLM comparison
Gemini 3 Flash leads with 3.5% higher average benchmark score. Gemini 3 Flash offers 776.2K more tokens in context window than Claude Opus 4.1. Gemini 3 Flash is $89.50 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
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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.
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Google DeepMind
Gemini 3 Flash, released by Google in December 2025, is a large language model from the Gemini 3 family that delivers reasoning and coding performance with efficiency optimized for high-volume workloads. It features a 1M token context window, 64K maximum output tokens, and native support for text, image, audio, video, and PDF input. Gemini 3 Flash targets cost-sensitive agentic workflows, document processing, and production APIs requiring fast, capable multimodal responses.
4 months newer
Claude Opus 4.1
Anthropic
2025-08-05
Gemini 3 Flash
Google DeepMind
2025-12-17
Pricing Comparison
Cost per million tokens (USD)
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Claude Opus 4.1
Input:$15.00
Output:$75.00
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Gemini 3 Flash
Input:$0.10
Output:$0.40($89.50 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Claude Opus 4.1
Average Score:74.5%
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Gemini 3 Flash
Average Score:78.0%(+3.5%)
Performance comparison across key benchmark categories
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Claude Opus 4.1
Coding74.5%
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Gemini 3 Flash
Coding78.0%(+3.5%)
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Knowledge Cutoff
Training data recency comparison
Claude Opus 4.1
2025-01
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Claude Opus 4.1
3 providers
Anthropic
AWS Bedrock
Google Cloud Vertex AI
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Gemini 3 Flash
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Claude Opus 4.1
Avg Score:74.5%
Providers:3
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Gemini 3 Flash
Avg Score:78.0%(+3.5%)
Providers:2