Claude Opus 4.5 vs GPT-5.2 pro
Compare Anthropic and OpenAI AI models
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Claude Opus 4.5
GPT-5.2 pro
Cost Differences
GPT-5.2 pro costs more than Claude Opus 4.5
Feature Comparison
| Feature | Claude Opus 4.5 | GPT-5.2 pro |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input Price | $5.00/1M tokens | $21.00/1M tokens |
| Output Price | $25.00/1M tokens | $168.00/1M tokens |
| Context Window | 200,000 tokens | 1,000,000 tokens |
| Max Output | 64,000 tokens | 131,072 tokens |
| Category | flagship | reasoning |
| Capabilities | textvisioncodereasoning | textvisionaudiocodereasoning |
| Release Date | 11/1/2025 | 12/11/2025 |
Claude Opus 4.5 vs GPT-5.2 pro: Which Should You Choose?
Choosing between Claude Opus 4.5 and GPT-5.2 pro depends on your priorities: cost efficiency, context length, or raw capability. Claude Opus 4.5 is the more affordable option at $5.00/1M input tokens — 76% cheaper than GPT-5.2 pro. Meanwhile, GPT-5.2 pro 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 OpenAI — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with Anthropic, switching to OpenAIinvolves 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 GPT-5.2 pro is reasoning. This means they're optimized for different workloads. Claude Opus 4.5 is built for complex tasks that require deeper reasoning, while GPT-5.2 pro offers better value for routine operations.
Output costs matter too. Claude Opus 4.5 charges $25.00/1M output tokens vs $168.00 for GPT-5.2 pro. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Claude Opus 4.5 has the edge here at $25.00/1M 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:
- • Budget is a primary concern
- • You're already using Anthropic's API ecosystem
Choose GPT-5.2 pro when:
- • You need a larger context window (1,000,000 tokens)
- • You need more capabilities (audio)
- • You need longer outputs (up to 131,072 tokens)
- • You're already using OpenAI's API ecosystem
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Claude Opus 4.5 (Anthropic)
GPT-5.2 pro (OpenAI)
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