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Claude Opus 4.5 vs Gemini 3 Pro
Comprehensive side-by-side LLM comparison
Claude Opus 4.5 leads with 1.6% higher average benchmark score. Gemini 3 Pro offers 744.2K more tokens in context window than Claude Opus 4.5. Gemini 3 Pro is $7.50 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
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Anthropic
Claude Opus 4.5, released by Anthropic in November 2025, is a large language model from the Claude 4.5 family built for demanding reasoning tasks, advanced code generation, and complex agentic workflows. It features a 200K token context window, 64K maximum output tokens, native image understanding, and extended thinking with configurable effort levels. Opus 4.5 targets deep analytical work, multi-step tool orchestration, and applications requiring sustained reasoning across long, complex tasks.
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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.
17 days newer
Claude Opus 4.5
Anthropic
2025-11-01
Gemini 3 Pro
Google DeepMind
2025-11-18
Pricing Comparison
Cost per million tokens (USD)
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Claude Opus 4.5
Input:$5.00
Output:$25.00
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Gemini 3 Pro
Input:$2.50
Output:$20.00($7.50 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 16 common benchmarks
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Claude Opus 4.5
Average Score:64.8%(+1.6%)
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Gemini 3 Pro
Average Score:63.3%
Performance comparison across key benchmark categories
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Claude Opus 4.5
Science87.0%
Knowledge90.8%
Multimodal70.6%
Agents74.2%(+5.7%)
Tool Use62.3%(+8.2%)
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Knowledge Cutoff
Training data recency comparison
Claude Opus 4.5
2025-05
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 4.5
3 providers
Anthropic
AWS Bedrock
Google Cloud Vertex AI
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Gemini 3 Pro
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Claude Opus 4.5
Avg Score:64.8%(+1.6%)
Providers:3
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Gemini 3 Pro
Avg Score:63.3%
Providers:2