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Gemini 2.5 Flash vs GPT-5.2
Comprehensive side-by-side LLM comparison
GPT-5.2 leads with 44.1% higher average benchmark score. Gemini 2.5 Flash is available on 2 providers. Overall, GPT-5.2 is the stronger choice for coding tasks.
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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.
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OpenAI
GPT-5.2, released by OpenAI on December 11, 2025, is a large language model from the GPT-5 family that improves on GPT-5 in general intelligence, long-context understanding, agentic tool-calling, and vision. It features a 400K token context window, 128K maximum output tokens, and a knowledge cutoff of August 2025. GPT-5.2 targets long-context coding tasks, extended document analysis, and complex agentic workflows requiring reliable instruction following.
5 months newer
Gemini 2.5 Flash
Google DeepMind
2025-06-17
GPT-5.2
OpenAI
2025-12-11
Performance Metrics
Context window and performance specifications
Average performance across 5 common benchmarks
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Gemini 2.5 Flash
Average Score:22.5%
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GPT-5.2
Average Score:66.6%(+44.1%)
Performance comparison across key benchmark categories
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Gemini 2.5 Flash
Science78.3%
Agents2.5%
Coding16.4%
Tool Use3.4%
Reasoning12.1%
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Knowledge Cutoff
Training data recency comparison
GPT-5.2
2025-08
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Gemini 2.5 Flash
2 providers
Google Cloud Vertex AI
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GPT-5.2
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Gemini 2.5 Flash
Avg Score:22.5%
Providers:2
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GPT-5.2
Avg Score:66.6%(+44.1%)
Providers:0