Gemini 2.5 Flash Preview (Reasoning): Intelligence, Performance & Price Analysis
Analysis of Google's Gemini 2.5 Flash Preview (Reasoning) and comparison to other AI models across key metrics including quality, price, performance (tokens per second & time to first token), context window & more. Click on any model to compare API providers for that model. For more details including relating to our methodology, see our FAQs.
Google has launched a newer model, Gemini 2.5 Flash (Reasoning). We suggest considering this model instead of Gemini 2.5 Flash (April '25) (Reasoning). See the following pages for a comparison of Gemini 2.5 Flash (Reasoning) to other models and Gemini 2.5 Flash (Reasoning) API provider benchmarks.
Comparison Summary
Intelligence:
Gemini 2.5 Flash (April '25) (Reasoning) is of higher quality compared to average, with a MMLU score of 0.8 and a Intelligence Index across evaluations of 60.
Price:Gemini 2.5 Flash (April '25) (Reasoning) is cheaper compared to average with a price of $0.99 per 1M Tokens (blended 3:1).
Gemini 2.5 Flash (April '25) (Reasoning) Input token price: $0.15, Output token price: $3.50 per 1M Tokens.
Speed:Latency:Context Window:Gemini 2.5 Flash (April '25) (Reasoning) Input token price: $0.15, Output token price: $3.50 per 1M Tokens.
Gemini 2.5 Flash (April '25) (Reasoning) has a larger context windows than average, with a context window of 1.0M tokens.
Highlights
Intelligence
Artificial Analysis Intelligence Index; Higher is better
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Speed
Output Tokens per Second; Higher is better
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Price
USD per 1M Tokens; Lower is better
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Parallel Queries:
Prompt Length:
Gemini 2.5 Flash Preview (Reasoning) Model Details
Comparisons to Gemini 2.5 Flash (April '25) (Reasoning)
Gemini 2.5 Flash (April '25) (Reasoning)
o4-mini (high)
o3-pro
GPT-4.1
o3
Llama 4 Maverick
Llama 4 Scout
Gemini 2.5 Flash (Reasoning)
Gemini 2.5 Pro
Claude 4 Sonnet Thinking
Claude 4 Opus Thinking
Magistral Small
DeepSeek V3 0324 (Mar '25)
DeepSeek R1 0528 (May '25)
Grok 4
Nova Premier
Solar Pro 2 (Reasoning)
MiniMax M1 80k
Kimi K2
Qwen3 235B (Reasoning)
GPT-4o (Nov '24)
Further details