Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with improvements across sy…
Model details →Anthropic: Claude Sonnet 4.5 vs Google: Gemini 3 Flash Preview
Google: Gemini 3 Flash Preview wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
Gemini 3 Flash Preview is a high speed, high value thinking model designed for agentic workflows, multi turn chat, and coding assistance. It delivers near Pro level reasoning and tool use performance with substantially lower latency than la…
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Sonnet 4.5 | Google: Gemini 3 Flash Preview | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1M | 1.0M | 🏆 Google: Gemini 3 Flash Preview |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $3.00 | $0.50 | 🏆 Google: Gemini 3 Flash Preview |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $15.00 | $3.00 | 🏆 Google: Gemini 3 Flash Preview |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Anthropic: Claude Sonnet 4.5 better than Google: Gemini 3 Flash Preview?
Google: Gemini 3 Flash Preview wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Anthropic: Claude Sonnet 4.5 and Google: Gemini 3 Flash Preview?
Input: $3.00 vs $0.50 per 1M tokens. Output: $15.00 vs $3.00 per 1M tokens.
What context windows do Anthropic: Claude Sonnet 4.5 and Google: Gemini 3 Flash Preview support?
Anthropic: Claude Sonnet 4.5 supports up to 1M tokens. Google: Gemini 3 Flash Preview supports up to 1.0M tokens.
Do both Anthropic: Claude Sonnet 4.5 and Google: Gemini 3 Flash Preview support tool calling?
Anthropic: Claude Sonnet 4.5: yes. Google: Gemini 3 Flash Preview: yes.