Claude 3.5 Sonnet vs Gemini 3.1 Pro: Specs & Benchmark Comparison
| Characteristic | Claude 3.5 Sonnet | Gemini 3.1 Pro |
|---|---|---|
| Company | Anthropic | |
| Release Date | June 21, 2024 | February 19, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 200K | 1.0M |
| Context (output) | 200K | 66K |
| Input Price / 1M | $3.00 | $2.50 |
| Output Price / 1M | $15.00 | $15.00 |
| Average Score | 0.8 | 0.8 |
| Benchmarks | ||
| GPQA | 0.6 | 0.9 |
Visual Benchmark Comparison
Claude 3.5 Sonnet
Gemini 3.1 Pro
GPQA0.6 vs 0.9
0.6
0.9
Verdict
Gemini 3.1 Pro leads in 3 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: Claude 3.5 Sonnet — 0.8, Gemini 3.1 Pro — 0.8.
API Cost
Gemini 3.1 Pro is 1.0x cheaper: input $2.50/1M vs $3.00/1M tokens.
Context Window
Gemini 3.1 Pro supports a larger context: 1M vs 200K tokens.
Recency
Gemini 3.1 Pro is newer: released 2/19/2026 vs 6/21/2024.
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Frequently Asked Questions
Which is better for coding — Claude 3.5 Sonnet or Gemini 3.1 Pro?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — Claude 3.5 Sonnet or Gemini 3.1 Pro?
Gemini 3.1 Pro is cheaper for input: $2.50 per 1M tokens vs $3.00.
Which has a larger context window — Claude 3.5 Sonnet or Gemini 3.1 Pro?
Gemini 3.1 Pro supports a larger context: 1,048,576 tokens vs 200,000.
The Claude 3.5 Sonnet and Gemini 3.1 Pro comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude 3.5 Sonnet or Gemini 3.1 Pro page. See also the complete list of AI model comparisons.