Claude Sonnet 4.6 vs Gemini 3 Pro
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
Claude Sonnet 4.6
Anthropic · Apr 2026
Anthropic's mid-tier workhorse: near-Opus capability at $3/$15, and the leader on the Finance Agent benchmark.
Gemini 3 Pro
73.6Google · Nov 2025
Google's November 2025 frontier breakout — 91.9% GPQA Diamond and 37.5% HLE made it the reasoning leader of its generation.
The verdict
Claude Sonnet 4.6 wins 1 of the 1 benchmarks these models share, against 0 for Gemini 3 Pro. Gemini 3 Pro is about 1.3x cheaper per blended million tokens (3:1 input:output mix).
Benchmark head-to-head 1–0
Specs & pricing
| Claude Sonnet 4.6 | Gemini 3 Pro | |
|---|---|---|
| modhub Index | — | 73.6 |
| Input price / 1M | $3 | $2 |
| Output price / 1M | $15 | $12 |
| Context window | 1M | 1M |
| Max output | 64K | 66K |
| Open weights | no | no |
| Reasoning model | yes | yes |
| Multimodal input | text, image | text, image, audio, video |
| Knowledge cutoff | Jan 2026 | Jan 2025 |
| Released | Apr 2026 | Nov 2025 |
| Example monthly cost* | $52.50 | $38.00 |
* 10M input + 1.5M output tokens per month at list prices, no caching. Green = better value on that row.
Frequently asked questions
- Which is better, Claude Sonnet 4.6 or Gemini 3 Pro?
- Claude Sonnet 4.6 wins 1 of the 1 benchmarks these models share, against 0 for Gemini 3 Pro. Gemini 3 Pro is about 1.3x cheaper per blended million tokens (3:1 input:output mix).
- Which is cheaper, Claude Sonnet 4.6 or Gemini 3 Pro?
- Claude Sonnet 4.6 costs $3/$15 per million input/output tokens, while Gemini 3 Pro costs $2/$12. For a typical workload of 10M input and 1.5M output tokens per month, that's $52.50 versus $38.00.
- Which model is better for coding, Claude Sonnet 4.6 or Gemini 3 Pro?
- On SWE-bench Verified — the standard agentic-coding benchmark — Claude Sonnet 4.6 scores ~79.6% versus 76.2% for Gemini 3 Pro, making Claude Sonnet 4.6 the stronger pick for coding agents.
More comparisons
Claude Sonnet 4.6 vs GPT-5.5Gemini 3 Pro vs GPT-5.5Claude Sonnet 4.6 vs GPT-5.2Gemini 3 Pro vs GPT-5.2Claude Sonnet 4.6 vs GPT-5.1Gemini 3 Pro vs GPT-5.1Claude Sonnet 4.6 vs GPT-5Gemini 3 Pro vs GPT-5Claude Sonnet 4.6 vs GPT-5 miniGemini 3 Pro vs GPT-5 miniClaude Sonnet 4.6 vs OpenAI o3Gemini 3 Pro vs OpenAI o3