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DeepSeek V3.1 vs Gemini 2.5 Pro (Jun 2025)

Both have similar output pricing, while DeepSeek V3.1 offers a larger context window. Choose DeepSeek V3.1 or Gemini 2.5 Pro (Jun 2025) based on the trade-off between cost, context, and the benchmarks that matter for your use case.

SpecDeepSeek V3.1Gemini 2.5 Pro (Jun 2025)
ProviderDeepSeekGoogle DeepMind
Input / 1M tokens$0.25—
Output / 1M tokens$0.95—
Context window164K—
Parameters——
Open weights—No
Released—Jun 2025
LMArena (Chatbot Arena) Elo score1420—
Epoch Capabilities Index score140145
SWE-bench Verified score—53.6
GPQA Diamond score—85.3
FrontierMath score—14.1

FAQ

Is DeepSeek V3.1 or Gemini 2.5 Pro (Jun 2025) cheaper?

DeepSeek V3.1 and Gemini 2.5 Pro (Jun 2025) have comparable output pricing.

Which has the larger context window, DeepSeek V3.1 or Gemini 2.5 Pro (Jun 2025)?

DeepSeek V3.1 has the larger context window (164K tokens).

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.