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Google: Gemini 3.1 Pro Preview vs Anthropic: Claude Opus 5.5 (batch)

Head-to-head API cost, context, and performance comparison. Synced at 1:39:46 PM.

Executive Summary

When evaluating Google: Gemini 3.1 Pro Preview against Anthropic: Claude Opus 5.5 (batch), the pricing structure is a key differentiator. Anthropic: Claude Opus 5.5 (batch) is approximately 14% more cost-effective per 1 million tokens overall.

However, when looking at raw reasoning capabilities, Anthropic: Claude Opus 5.5 (batch) leads with a statistical ELO score of 1504. For tasks involving complex logic, coding, or instruction-following, developers might prefer Anthropic: Claude Opus 5.5 (batch), provided their budget allows for the API burn rate.

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Raw Technical comparison

Metric
Google: Gemini 3.1 Pro Preview
Anthropic: Claude Opus 5.5 (batch)
Performance (ELO)
1503
1504
Input Cost / 1M
$2.00
$2.00
Output Cost / 1M
$12.00
$10.00
Context Window
1,048,576 tokens
1,000,000 tokens

Verdict

If you are looking for pure performance and capability, Anthropic: Claude Opus 5.5 (batch) is statistically superior. However, if API burn rate is the primary concern, Anthropic: Claude Opus 5.5 (batch) wins out aggressively in pricing.

People Also Ask

Is Google: Gemini 3.1 Pro Preview cheaper than Anthropic: Claude Opus 5.5 (batch)?

No. Anthropic: Claude Opus 5.5 (batch) is the more cost-effective model, operating at a lower price point per 1 million tokens.

Which model has the larger context window?

The Google: Gemini 3.1 Pro Preview model has the advantage in memory, offering a massive 1,048,576 token limit for document ingestion.

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