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Gemini 2.0 Flash Lite vs o3-mini: Pricing, Benchmarks & Verdict (2026)

Verdict

Gemini 2.0 Flash Lite is significantly cheaper at $0.07/$0.30 per million tokens vs $1.10/$4.40. o3-mini is stronger for coding with a coding ELO of 1340 vs 1170. Gemini 2.0 Flash Lite is faster at 180 tokens/sec vs 55 tokens/sec. o3-mini ranks higher overall with an Arena ELO of 1310 vs 1200. Gemini 2.0 Flash Lite offers a larger 1049K context window vs 200K.

Side-by-Side Comparison

FeatureGemini 2.0 Flash Liteo3-mini
ProviderGoogleOpenAI
Input Price / 1M tokens$0.075$1.10
Output Price / 1M tokens$0.300$4.40
Context Window1.048576M200K
Max Output Tokens8,192100,000
Arena ELO1,2001,310
Coding ELO1,1701,340
TTFT (ms)1001,500
Tokens/sec18055
MultimodalYesNo
JSON ModeYesYes
Function CallingYesYes
VisionYesNo
When to Use Gemini 2.0 Flash Lite

Choose Gemini 2.0 Flash Lite when you need: cheapest google model available, ultra-fast response times, 1m context window, great for simple tasks at scale. It excels at chatbots, classification, high-volume, cost-sensitive tasks. It is also the more cost-effective option between the two. Its 1049K context window is larger, making it better for long-document processing.

Strengths:

  • Cheapest Google model available
  • Ultra-fast response times
  • 1M context window
  • Great for simple tasks at scale

Best for:

chatbotsclassificationhigh-volumecost-sensitive
When to Use o3-mini

Choose o3-mini when you need: strong mathematical reasoning, good coding performance, affordable reasoning model, large output window. It excels at reasoning, math, coding, science tasks.

Strengths:

  • Strong mathematical reasoning
  • Good coding performance
  • Affordable reasoning model
  • Large output window

Best for:

reasoningmathcodingscience

Frequently Asked Questions

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