Gemini 3.1 Pro wins on research depth and price ($2 vs $3/1M input). Claude Sonnet 4.6 wins on coding (97 vs 80) and writing quality (98 vs 82). Both read about a million tokens. Claude Sonnet 4.6 has since been replaced — by Sonnet 5 in July and Sonnet 5.5 in September 2026 — so for a new decision, compare Gemini 3.1 Pro with Claude Sonnet 5.5.
The safest Gemini 3.1 Pro vs Claude Sonnet 4.6 default, the cheaper option worth trying first, and the specialist pick — before you read the detail below.
Claude Sonnet 4.6 is the strongest answer here for Gemini 3.1 Pro vs Claude Sonnet 4.6 — pick it when quality of output matters more than the $3.00/1M/1M input you pay for it.
Gemini 3.1 Pro handles the same job for about 22% less per token. Start here and only move up if the output is not good enough.
Claude Sonnet 4.6 is the fastest of these for Gemini 3.1 Pro vs Claude Sonnet 4.6 — worth it when latency is what the reader notices, not the last few points of reasoning depth.
Claude Sonnet 4.6 leads on coding (79.6% SWE-bench vs Gemini's 80 score) and writing quality.
Both have a 1M-token context window; Gemini 3.1 Pro leads our research measure.
Gemini 3.1 Pro is cheaper at $2/1M input vs Claude Sonnet 4.6's $3/1M.
Choose Claude Sonnet 4.6 if coding, writing or day-to-day developer work is your primary use — or its successor, Claude Sonnet 5.5.
Choose Gemini 3.1 Pro for research, synthesis and work that already lives in Google tools.
Using both is a common pattern: Claude for creating, Gemini for analysing.
Switch the scoring lens to see whether the Gemini 3.1 Pro vs Claude Sonnet 4.6 answer changes when cost, speed, or long-document depth leads the decision.
Anthropic / Premium / Mar 24, 2026
Earlier Sonnet — replaced by Sonnet 5 and then Sonnet 5.5.
Ranks models by the broadest mix of coding, writing, research, and long-context usefulness.
You specifically need desktop-control capabilities (GPT-5.5/GPT-5.4) or the absolute highest coding ceiling (Opus 4.7).
Where the Gemini 3.1 Pro vs Claude Sonnet 4.6 recommendation shifts once you weigh price or latency differently.
Earlier Sonnet — replaced by Sonnet 5 and then Sonnet 5.5.
Google's Pro model — 1M context and native multimodal input at $2/$12.
List prices and published scores — the numbers this page's pick is built from.
| Model | Input | Output | Est. month | Context | Speed | Coding | Writing | Research |
|---|---|---|---|---|---|---|---|---|
| Claude Sonnet 4.6Anthropic | $3.00/1M | $15.00/1M | $60 | 1M tokens | Balanced | 97 | 94 | 93 |
| Gemini 3.1 ProGoogle | $2.00/1M | $12.00/1M | $44 | 1M tokens | Balanced | 80 | 82 | 94 |
Scores out of 100 — how we evaluate models. “Est. month” is 10M in / 2M out at list price: a ceiling, no discounts.
Why each one is on the shortlist for Gemini 3.1 Pro vs Claude Sonnet 4.6, what it is genuinely good at, and where we would steer you away from it.
The default answer for Gemini 3.1 Pro vs Claude Sonnet 4.6 — 97/100 on the coding axis, and the model we would start with unless the price below rules it out.
The default model powering Cursor and Windsurf. 79.6% SWE-bench, 1M context window, and best-in-tier writing quality — all at $3/1M input.
You specifically need desktop-control capabilities (GPT-5.5/GPT-5.4) or the absolute highest coding ceiling (Opus 4.7).
The best all-around model for most developers and writers. Strong SWE-bench, excellent writing, 1M context — all at $3/1M input. Hard to beat as a daily driver.
Full pricing, benchmark table and release notes on the Claude Sonnet 4.6 page.
Where most budgets should land for Gemini 3.1 Pro vs Claude Sonnet 4.6 — about 22% less per token than Claude Sonnet 4.6, and still 80/100 on the coding axis.
Google's Pro-tier Gemini 3 model, released in preview on February 19, 2026, with a 1M-token context window, Deep Think reasoning and $2/$12 pricing.
Your primary use case is writing quality or agentic coding — Claude wins both.
A capable research model and still Google's current Pro tier, but no longer the long-context leader: its 1M-token window matches Claude Opus 5.5 and is slightly below the GPT-6 family's 1.05M. Choose it for Google Workspace integration and multimodal input; for most research, Claude Opus 5.5 or GPT-6.1 Sol are stronger at a similar price.
Full pricing, benchmark table and release notes on the Gemini 3.1 Pro page.
UseRightAI recommendations are based on practical decision factors people actually feel in day-to-day use.
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Claude Sonnet 4.6 is significantly better for coding: 97 on our coding measure and 79.6% on SWE-bench, against Gemini 3.1 Pro's 80.
Gemini 3.1 Pro scores higher on our research measure and scored 77.1% on ARC-AGI-2 at launch. Both models read about a million tokens.
Gemini 3.1 Pro at $2/1M input and $12/1M output, against Claude Sonnet 4.6's $3/1M input and $15/1M output.
They are equal at about 1M tokens. Earlier versions of this page said Gemini 3.1 Pro had 2M; Google's documentation lists 1M.
Yes — a common setup is Claude for coding, writing and standard prompting, with research synthesis routed to Gemini on price and Google integration.