Claude Opus 4.5 vs Gemini 3.1 Flash-Lite Preview
Compare Anthropic and Google AI models
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Claude Opus 4.5
Gemini 3.1 Flash-Lite Preview
Cost Differences
Gemini 3.1 Flash-Lite Preview costs less than Claude Opus 4.5
Feature Comparison
| Feature | Claude Opus 4.5 | Gemini 3.1 Flash-Lite Preview |
|---|---|---|
| Provider | Anthropic | |
| Input Price | $5.00/1M tokens | $0.25/1M tokens |
| Output Price | $25.00/1M tokens | $1.50/1M tokens |
| Context Window | 200,000 tokens | 1,000,000 tokens |
| Max Output | 64,000 tokens | 8,192 tokens |
| Category | flagship | efficient |
| Capabilities | textvisioncodereasoning | textvisioncode |
| Release Date | 11/1/2025 | 3/3/2026 |
Claude Opus 4.5 vs Gemini 3.1 Flash-Lite Preview: Which Should You Choose?
Choosing between Claude Opus 4.5 and Gemini 3.1 Flash-Lite Preview depends on your priorities: cost efficiency, context length, or raw capability. Gemini 3.1 Flash-Lite Preview is the more affordable option at $0.25/1M input tokens — 95% cheaper than Claude Opus 4.5. Meanwhile, Gemini 3.1 Flash-Lite Preview offers a significantly larger context window at 1,000,000 tokens vs 200,000 for Claude Opus 4.5.
These models come from different providers — Anthropic and Google — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with Anthropic, switching to Googleinvolves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.
These models target different tiers: Claude Opus 4.5 is a flagship model while Gemini 3.1 Flash-Lite Preview is efficient. This means they're optimized for different workloads. Claude Opus 4.5 is built for complex tasks that require deeper reasoning, while Gemini 3.1 Flash-Lite Preview offers better value for routine operations.
Output costs matter too. Claude Opus 4.5 charges $25.00/1M output tokens vs $1.50 for Gemini 3.1 Flash-Lite Preview. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Gemini 3.1 Flash-Lite Preview has the edge here at $1.50/1M output tokens.
Multimodal capabilities: Both models support vision (image understanding), so you can send images alongside text prompts with either option.
Best Use Cases
Choose Claude Opus 4.5 when:
- • You need more capabilities (reasoning)
- • You need longer outputs (up to 64,000 tokens)
- • You're already using Anthropic's API ecosystem
Choose Gemini 3.1 Flash-Lite Preview when:
- • Budget is a primary concern
- • You need a larger context window (1,000,000 tokens)
- • You're already using Google's API ecosystem
- • You're running high-volume, latency-sensitive workloads
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Claude Opus 4.5 (Anthropic)
Gemini 3.1 Flash-Lite Preview (Google)
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