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 2.5 Flash
Google: Gemini 2.5 Flash wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
Gemini 2.5 Flash is Google's state-of-the-art workhorse model, specifically designed for advanced reasoning, coding, mathematics, and scientific tasks. It includes built-in "thinking" capabilities, enabling it to provide responses with grea…
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Opus 4.5 | Google: Gemini 2.5 Flash | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 200K | 1.0M | 🏆 Google: Gemini 2.5 Flash |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $5.00 | $0.30 | 🏆 Google: Gemini 2.5 Flash |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $25.00 | $2.50 | 🏆 Google: Gemini 2.5 Flash |
| 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 2.5 Flash?
Google: Gemini 2.5 Flash 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 2.5 Flash?
Input: $5.00 vs $0.30 per 1M tokens. Output: $25.00 vs $2.50 per 1M tokens.
What context windows do Anthropic: Claude Opus 4.5 and Google: Gemini 2.5 Flash support?
Anthropic: Claude Opus 4.5 supports up to 200K tokens. Google: Gemini 2.5 Flash supports up to 1.0M tokens.
Do both Anthropic: Claude Opus 4.5 and Google: Gemini 2.5 Flash support tool calling?
Anthropic: Claude Opus 4.5: yes. Google: Gemini 2.5 Flash: yes.