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Claude 3.5 Sonnet vs Gemini 2.5 Flash
Comprehensive side-by-side LLM comparison
Gemini 2.5 Flash leads with 12.4% higher average benchmark score. Gemini 2.5 Flash offers 800.1K more tokens in context window than Claude 3.5 Sonnet. Gemini 2.5 Flash is $17.25 cheaper per million tokens. Overall, Gemini 2.5 Flash is the stronger choice for coding tasks.
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Anthropic
Claude 3.5 Sonnet, updated by Anthropic in October 2024 (originally released June 2024), is a large language model from the Claude 3.5 family that delivered strong performance in coding, reasoning, and instruction-following at its release. It supports a 200K token context window, 8K maximum output tokens, and native image understanding including screenshot analysis and document comprehension. Claude 3.5 Sonnet targets general-purpose development tasks, document analysis, and applications requiring reliable instruction following with visual input support.
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Google DeepMind
Gemini 2.5 Flash, released by Google in June 2025, is a large language model from the Gemini 2.5 family optimized for high-throughput, cost-efficient deployments with multimodal reasoning. It features a 1M token context window, hybrid thinking control, and native support for text, image, video, and audio input. Gemini 2.5 Flash targets latency-sensitive applications, document analysis, and high-volume API workloads that benefit from combined reasoning and generation in a single model.
7 months newer
Claude 3.5 Sonnet
Anthropic
2024-10-22
Gemini 2.5 Flash
Google DeepMind
2025-06-17
Pricing Comparison
Cost per million tokens (USD)
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Claude 3.5 Sonnet
Input:$3.00
Output:$15.00
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Gemini 2.5 Flash
Input:$0.15
Output:$0.60($17.25 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Claude 3.5 Sonnet
Average Score:28.0%
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Gemini 2.5 Flash
Average Score:40.4%(+12.4%)
Performance comparison across key benchmark categories
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Claude 3.5 Sonnet
Science55.0%
Agents0.9%
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Gemini 2.5 Flash
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Knowledge Cutoff
Training data recency comparison
Claude 3.5 Sonnet
2024-04
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 3.5 Sonnet
3 providers
Anthropic
AWS Bedrock
Google Cloud Vertex AI
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Gemini 2.5 Flash
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Claude 3.5 Sonnet
Avg Score:28.0%
Providers:3
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Gemini 2.5 Flash
Avg Score:40.4%(+12.4%)
Providers:2