DeepSeek R1 vs Gemini 2.5 Pro

DeepSeek R1 vs Gemini 2.5 Pro: DeepSeek R1 is cheaper by 46% on average. DeepSeek R1 from Azure AI Foundry (128,000-token context, reasoning) vs. Gemini 2.5 Pro from Google Vertex AI (1,048,576-token context, reasoning, tool calls). Use Agent Command Center to A/B both in shadow mode and pick the winner per workload.

Side-by-side cost

Live workload comparison

Same workload run through both models. The cheaper one is highlighted.

3,000
01,048,576
400
065,535
5,000
01,000,000
Azure AI Foundry
$945/mo
Input $1.35/M · Output $5.40/M
Google Vertex AI
$1,179/mo
Input $1.25/M · Output $10.00/M
At this workload, DeepSeek R1 is 20% cheaper than Gemini 2.5 Pro — a savings of $234/month ($2,812/year).
Crossover: Gemini 2.5 Pro is cheaper when output/input ≤ 0.02 (input-heavy workloads — RAG, retrieval). DeepSeek R1 wins above (long-form generation).
Current workload ratio: 0.13 (400/3000)
Production recipe — Agent Command Center
strategy: cost-optimized
primary:
  model: deepseek-r1
  provider: azure-ai-foundry
fallback:
  model: gemini-2-5-pro
  provider: vertex-ai
shadow: { sample_rate: 0.05 }   # mirror 5% of traffic to compare quality live
DeepSeek R1 Gemini 2.5 Pro
Input price $1.35/M $1.25/M
Output price $5.40/M $10.00/M
Context window 128,000 1,048,576
Max output 8,192 65,535
Function calling
Vision
Audio input
Reasoning
Prompt caching
Structured output
Pricing verified May 12, 2026 May 12, 2026
Cheaper option
~46% cheaper than Gemini 2.5 Pro
Larger context
1,048,576 tokens
More capabilities
6 of 6 capability flags advertised

Benchmark comparison

Side-by-side public benchmark scores. Greener bar = winner.

Chatbot Arena ELOgeneral
DeepSeek R1
1,361
Gemini 2.5 Pro
1,448
MATH-500math⚠ different settings
DeepSeek R1
97.3%
Gemini 2.5 Pro
93.7%
HumanEvalcode
DeepSeek R1
89.7%
Gemini 2.5 Pro
93.6%
MMLUgeneral
DeepSeek R1
90.8%
Gemini 2.5 Pro
MMLU-Proreasoning⚠ different settings
DeepSeek R1
84.0%
Gemini 2.5 Pro
86.7%
AIME 2025math
DeepSeek R1
Gemini 2.5 Pro
86.7%
GPQA Diamondreasoning⚠ different settings
DeepSeek R1
71.5%
Gemini 2.5 Pro
84.0%
AIME 2024math
DeepSeek R1
79.8%
Gemini 2.5 Pro
MMMUmultimodal
DeepSeek R1
Gemini 2.5 Pro
79.6%
BFCL v3agent
DeepSeek R1
Gemini 2.5 Pro
76.0%
Aider Polyglotcode
DeepSeek R1
57.0%
Gemini 2.5 Pro
73.3%
LiveCodeBenchcode
DeepSeek R1
65.9%
Gemini 2.5 Pro
69.0%
SWE-bench Verifiedagent
DeepSeek R1
49.2%
Gemini 2.5 Pro
63.8%
Humanity's Last Examreasoning
DeepSeek R1
Gemini 2.5 Pro
18.8%