Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding…
Model details →Anthropic: Claude Opus 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 Opus 4.5 | Google: Gemini 3 Flash Preview | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 200K | 1.0M | 🏆 Google: Gemini 3 Flash Preview |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $5.00 | $0.50 | 🏆 Google: Gemini 3 Flash Preview |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $25.00 | $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 Opus 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 Opus 4.5 and Google: Gemini 3 Flash Preview?
Input: $5.00 vs $0.50 per 1M tokens. Output: $25.00 vs $3.00 per 1M tokens.
What context windows do Anthropic: Claude Opus 4.5 and Google: Gemini 3 Flash Preview support?
Anthropic: Claude Opus 4.5 supports up to 200K tokens. Google: Gemini 3 Flash Preview supports up to 1.0M tokens.
Do both Anthropic: Claude Opus 4.5 and Google: Gemini 3 Flash Preview support tool calling?
Anthropic: Claude Opus 4.5: yes. Google: Gemini 3 Flash Preview: yes.