Claude Opus 4.1 vs Gemini 3 Pro Preview

Claude Opus 4.1 vs Gemini 3 Pro Preview: Gemini 3 Pro Preview is cheaper by 87% on average. Claude Opus 4.1 from Azure AI Foundry (200,000-token context, reasoning, tool calls) vs. Gemini 3 Pro Preview 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
$11,414/mo
Input $15.00/M · Output $75.00/M
Google Vertex AI
$1,644/mo
Input $2.00/M · Output $12.00/M
At this workload, Gemini 3 Pro Preview is 86% cheaper than Claude Opus 4.1 — a savings of $9,770/month ($117,245/year).
Production recipe — Agent Command Center
strategy: cost-optimized
primary:
  model: gemini-3-pro-preview
  provider: vertex-ai
fallback:
  model: claude-opus-4-1
  provider: azure-ai-foundry
shadow: { sample_rate: 0.05 }   # mirror 5% of traffic to compare quality live
Claude Opus 4.1 Gemini 3 Pro Preview
Input price $15.00/M $2.00/M
Output price $75.00/M $12.00/M
Context window 200,000 1,048,576
Max output 32,000 65,535
Function calling
Vision
Audio input
Reasoning
Prompt caching
Structured output
Pricing verified May 12, 2026 May 12, 2026
Cheaper option
~87% cheaper than Claude Opus 4.1
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
Claude Opus 4.1
1,447
Gemini 3 Pro Preview
1,486
HumanEvalcode
Claude Opus 4.1
92.4%
Gemini 3 Pro Preview
IFEvalgeneral
Claude Opus 4.1
89.1%
Gemini 3 Pro Preview
MMLU-Proreasoning
Claude Opus 4.1
87.0%
Gemini 3 Pro Preview
BFCL v3agent
Claude Opus 4.1
86.3%
Gemini 3 Pro Preview
GPQA Diamondreasoning
Claude Opus 4.1
79.6%
Gemini 3 Pro Preview
MMMUmultimodal
Claude Opus 4.1
79.1%
Gemini 3 Pro Preview
SWE-bench Verifiedagent
Claude Opus 4.1
74.5%
Gemini 3 Pro Preview