Claude Opus 4.1 vs o1 Pro
Compare Anthropic and OpenAI AI models
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Claude Opus 4.1
o1 Pro
Cost Differences
o1 Pro costs more than Claude Opus 4.1
Feature Comparison
| Feature | Claude Opus 4.1 | o1 Pro |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input Price | $15.00/1M tokens | $150.00/1M tokens |
| Output Price | $75.00/1M tokens | $600.00/1M tokens |
| Context Window | 200,000 tokens | 200,000 tokens |
| Max Output | 32,000 tokens | 100,000 tokens |
| Category | flagship | flagship |
| Capabilities | textvisioncodereasoning | textvisioncodereasoning |
| Release Date | 8/5/2025 | 12/17/2024 |
Claude Opus 4.1 vs o1 Pro: Which Should You Choose?
Choosing between Claude Opus 4.1 and o1 Pro depends on your priorities: cost efficiency, context length, or raw capability. Claude Opus 4.1 is the more affordable option at $15.00/1M input tokens — 90% cheaper than o1 Pro.
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.
Both models are in the flagship category, making this a direct head-to-head comparison. At scale — say 10,000 requests per day — the cost difference adds up: Claude Opus 4.1 would save you roughly $119,250.00/month compared to o1 Pro. For startups and indie developers, that difference can be significant.
Output costs matter too. Claude Opus 4.1 charges $75.00/1M output tokens vs $600.00 for o1 Pro. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Claude Opus 4.1 has the edge here at $75.00/1M 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 4.1 when:
- • Budget is a primary concern
- • You're already using Anthropic's API ecosystem
Choose o1 Pro when:
- • You need longer outputs (up to 100,000 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 4.1 (Anthropic)
o1 Pro (OpenAI)
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