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: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) is faster compared to average, with a output speed of 398.2 tokens per second.
Latency:Gemini 2.5 Flash (April '25) (Reasoning) has a higher latency compared to average, taking 6.56s to receive the first token (TTFT).
Context Window: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
Speed
Output Tokens per Second; Higher is better
Price
USD per 1M Tokens; Lower is better
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)
o3
GPT-4.1
o3-pro
o4-mini (high)
Llama 4 Maverick
Llama 4 Scout
Gemini 2.5 Pro
Gemini 2.5 Flash (Reasoning)
Claude 4 Opus Thinking
Claude 4 Sonnet Thinking
Claude 4 Sonnet
Magistral Small
DeepSeek R1 0528 (May '25)
DeepSeek V3 0324 (Mar '25)
Grok 3 mini Reasoning (high)
Nova Premier
MiniMax M1 80k
Llama Nemotron Ultra Reasoning
Qwen3 235B (Reasoning)
GPT-4o (Nov '24)
Further details