ModelRefs / Gemini 3 Pro vs Claude Sonnet 4.5
Gemini 3 Pro vs Claude Sonnet 4.5
Gemini 3 Pro vs Claude Sonnet 4.5: side-by-side benchmarks, pricing, context windows, coding ability and deployment. Pick the right model for your stack.
Overview
Claude Sonnet 4.5: Claude Sonnet 4.5 is Anthropic's balanced frontier model, designed for complex reasoning, coding, and agentic tasks while maintaining production-grade speed. It builds on the Claude 4 family's emphasis on honesty and reduced hallucination rates.
Gemini 3 Pro: Gemini 3 Pro is Google DeepMind's flagship multimodal model with a 2M-token context window spanning text, image, audio, and video inputs. It is built for long-context reasoning, document understanding, and multimodal agentic workflows.
Context window: Claude Sonnet 4.5 accepts up to 200,000 tokens, Gemini 3 Pro up to 2,000,000. Confirm the limit for your specific deployment channel before relying on it.
Claude Sonnet 4.5 vs Gemini 3 Pro at a glance
| Attribute | Claude Sonnet 4.5 | Gemini 3 Pro |
|---|---|---|
| Provider | Anthropic | |
| Released | 2025-09-29 | 2025-11-18 |
| Context window | 200,000 tokens | 2,000,000 tokens |
| Input price | $3/M tokens | $1.25/M tokens |
| Output price | $15/M tokens | $10/M tokens |
| Licence | Proprietary | Proprietary |
| Self-hostable | No, hosted only | No, hosted only |
| Modalities | text, vision | text, vision, audio, video |
Where they differ most
- Cost Efficiency: Claude Sonnet 4.5 37%, Gemini 3 Pro 47%. Gemini 3 Pro leads on this dimension.
Capability scores are ModelRefs' own derived signals, not vendor claims or benchmark results. Validate against your own workload before relying on them.
Continue your research
Use these connected ModelRefs sections to compare alternatives, inspect implementation paths, and review the evidence and governance boundaries relevant to Gemini 3 Pro vs Claude Sonnet 4.5.
Frequently asked questions
Which is better, Gemini 3 Pro or Claude Sonnet 4.5?
Gemini 3 Pro and Claude Sonnet 4.5 target different workloads — see the benchmark and pricing tables for a side-by-side answer.
Is Gemini 3 Pro cheaper than Claude Sonnet 4.5?
Compare $0.00125 vs $0.00300 on this page.