Gemini 2.5 Flash vs Gemini 3 Pro

Side-by-side comparison of pricing, capabilities, benchmarks, and use case fit.

G

Gemini 2.5 Flash

Google

Overall 90

fast

G

Gemini 3 Pro

Google

Overall 94

standard

Capability radar

Normalized coding, reasoning, writing, vision, context, and value

Gemini 2.5 FlashGemini 3 Pro

Comparison of Gemini 2.5 Flash vs Gemini 3 Pro
Metric	Gemini 2.5 Flash	Gemini 3 Pro
Input Price / 1M	$0.15	$3.60
Output Price / 1M	$0.60	$14.00
Combined Price / 1M	$0.75	$17.60
Context Window	1,048,576	1,000,000
Coding Score	88	93
Reasoning Score	89	95
Vision Score	94	96
Audio	Yes	Yes
Streaming	Yes	Yes
Function Calling	Yes	Yes
Latency Tier	fast	standard
Release Date	4/17/2025	5/20/2026

Gemini 2.5 Flash — Strengths & Weaknesses

Strengths

Thinking mode
Excellent multimodal
Low cost

Weaknesses

Preview API stability

Gemini 3 Pro — Strengths & Weaknesses

Strengths

Frontier multimodal
1M context
Strong reasoning

Weaknesses

Higher cost than Flash

Use Case Verdicts

Coding

Gemini 3 Pro scores 93 vs 88 on coding benchmarks.

General Chat

Gemini 3 Pro leads on writing quality (92 vs 87).

Long Context

Gemini 2.5 Flash

Gemini 2.5 Flash offers 1M tokens vs 1M.

Cost Efficiency

Gemini 2.5 Flash

Gemini 2.5 Flash is cheaper at $0.75/M combined vs $17.60/M.

Enterprise Use

Gemini 3 Pro combines strong reasoning, tooling, and context for enterprise workloads.

Agent Workflows

Gemini 3 Pro is better suited for agentic workflows with tool use and coding capability.