Model Comparison
GPT-5.2 (xhigh)
vs. Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
Comparing 2 AI models · 0 benchmarks · OpenAI, Anthropic
Recommended Pick
AnClaude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)6 metric winsStrongest on: Value, Throughput, TTFT
Best Value
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
100.0 value score
56.0 reasoning / $8.00/1M
Lowest Price
GPT-5.2 (xhigh)
$1.75/1M input price
Best Reasoning
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
56.0 reasoning score
Blends available reasoning benchmarks
Differences That Matter
Best value
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
GPT-5.2 (xhigh) is 2.3x cheaper on input tokens than Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback).
Speed gap
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) generates about 1.2x as many tokens per second as GPT-5.2 (xhigh).
Reasoning gap
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) leads GPT-5.2 (xhigh) by 25.6 points on reasoning.
Top-pick rationale
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) wins 6 measurable categories, including Value, Throughput, TTFT, Latency.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GPT-5.2 (xhigh)
OpenAI
TTFT
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Time
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tok/s
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Tokens
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Cost
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Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
Anthropic
TTFT
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Time
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tok/s
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Tokens
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Cost
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Which answer was more useful?
Secure AI Chat made in Europe
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Full Comparison
| Metric | Op GPT-5.2 (xhigh) | Top Pick An Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.75/1M | $4.00/1M |
| Output Cost | $14.00/1M | $20.00/1M |
| Blended (3:1) | $4.81/1M | $8.00/1M |
| Specifications | ||
| Organization | OpenAI | Anthropic |
| Release Date | Dec 11, 2025 | Sep 17, 2026 |
| Performance & Speed | ||
| Throughput | 79.5 tok/s | 92.4 tok/s |
| TTFT | 165470ms | 155450ms |
| Latency | 165470ms | 155450ms |
| Composite Indices | ||
| Value Score | 90.2 | 100.0 |
| Reasoning Score | 30.4 | 56.0 |
| Intelligence | 30.4 | 56.0 |
Key Takeaways
GPT-5.2 (xhigh) offers the best value at $1.75/1M,making it ideal for high-volume applications and cost-conscious projects.
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) has the strongest reasoning profile with a 56.0 reasoning score,combining the available reasoning-heavy benchmarks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
GPT-5.2 (xhigh)
- Cost-sensitive applications
- High-volume processing
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
- Complex reasoning tasks
- Research & analysis
