Gemini 3.5 Flash vs GPT 5 Codex
Google's high-speed thinking model for agentic workflows, chat, and coding.
GPT-5 optimized for code generation and software engineering tasks.
No captured outputs for these models yet.
Frequently Asked Questions: Gemini 3.5 Flash vs GPT 5 Codex▼
Which is better, Gemini 3.5 Flash or GPT 5 Codex?
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Both Gemini 3.5 Flash and GPT 5 Codex are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.
Which is cheaper, Gemini 3.5 Flash or GPT 5 Codex?
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Gemini 3.5 Flash has a lower blended cost. Gemini 3.5 Flash: $1.50 input / $9.00 output. GPT 5 Codex: $1.25 input / $10.00 output.
Which has a larger context window, Gemini 3.5 Flash or GPT 5 Codex?
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Gemini 3.5 Flash has a larger context window: Gemini 3.5 Flash supports 1M tokens vs GPT 5 Codex at 400K tokens.
Do both Gemini 3.5 Flash and GPT 5 Codex support vision?
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Yes, both Gemini 3.5 Flash and GPT 5 Codex support vision/image input.
What are the key differences between Gemini 3.5 Flash and GPT 5 Codex?
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Gemini 3.5 Flash and GPT 5 Codex have similar overall capabilities. The main differences lie in pricing, context window size, and provider-specific strengths. Use this comparison page to review all metrics side by side.
Which model should I choose for my use case?
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If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Gemini 3.5 Flash and GPT 5 Codex for free on idapt.app to see which performs better for your specific needs.