Claude 3 Sonnet vs Gemini 3.1 Pro Preview
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Claude 3 Sonnet and Gemini 3.1 Pro Preview.
Claude 3 Sonnet
Claude 3 Sonnet was Anthropic's balanced standard model in the first Claude 3 generation, optimized for a combination of response speed and general-purpose capabilities across writing, summarization, and question answering. Released in March 2024 alongside Opus and Haiku, it occupied the mid-tier positioning in the Claude 3 lineup. Claude 3 Sonnet has since been deprecated, and current use cases requiring similar capability-to-cost balance are best served by the Claude 4 Sonnet series, which offers substantially improved reasoning, context handling, and instruction following at competitive pricing.
Gemini 3.1 Pro Preview
Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation...
Technical Specifications
| Specification | Claude 3 Sonnet | Gemini 3.1 Pro Preview |
|---|---|---|
| Provider | Anthropic | |
| Context Window | 200,000 tokens | 1,048,576 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | N/A | managed api |
| Production Stability | stable | beta |
| API Available | Yes | Yes |
| Released Date | 2024-03-04 | 2026-02-19 |
API Pricing Comparison
Input Price per Million Tokens
Claude 3 Sonnet
$3.00
Gemini 3.1 Pro Preview
$2.00
Output Price per Million Tokens
Claude 3 Sonnet
$15.00
Gemini 3.1 Pro Preview
$12.00
Want to test both models live?
Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.
Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
Claude 3 Sonnet Quirks & Gotchas
No developer gotchas reported.
Gemini 3.1 Pro Preview Quirks & Gotchas
No developer gotchas reported.