Model Comparison
Claude Opus 4.6 (Non-reasoning, High Effort)
vs. GPT-4.5 (Preview)
Comparing 2 AI models · 7 benchmarks · Anthropic, OpenAI
Recommended Pick
Op GPT-4.5 (Preview) 4 metric wins Strongest on: Input price, Output price, TTFT
Lowest Price
GPT-4.5 (Preview)
$0.00/1M input price
Best Reasoning
Claude Opus 4.6 (Non-reasoning, High Effort)
49.7 reasoning score
Blends available reasoning benchmarks
Best for Coding
Claude Opus 4.6 (Non-reasoning, High Effort)
47.6 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Price gap
GPT-4.5 (Preview) is ∞x cheaper on input tokens than Claude Opus 4.6 (Non-reasoning, High Effort).
Reasoning gap
Claude Opus 4.6 (Non-reasoning, High Effort) leads GPT-4.5 (Preview) by 29.7 points on reasoning.
Top-pick rationale
GPT-4.5 (Preview) wins 4 measurable categories, including Input price, Output price, TTFT, Latency.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Claude Opus 4.6 (Non-reasoning, High Effort)
Anthropic
TTFT
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Time
—
tok/s
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Tokens
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Cost
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GPT-4.5 (Preview)
OpenAI
TTFT
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Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
Full Comparison
| Metric | An Claude Opus 4.6 (Non-reasoning, High Effort) | Top Pick Op GPT-4.5 (Preview) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $5.00/1M | $0.00/1M |
| Output Cost | $25.00/1M | $0.00/1M |
| Blended (3:1) | $10.00/1M | — |
| Specifications | ||
| Organization | Anthropic | OpenAI |
| Release Date | Feb 5, 2026 | Feb 27, 2025 |
| Performance & Speed | ||
| Throughput | 44.9 tok/s | — |
| TTFT | 1422ms | — |
| Latency | 1422ms | — |
| Composite Indices | ||
| Value Score | 100.0 | — |
| Reasoning Score | 49.7 | 20.0 |
| Intelligence | 46.5 | 20.0 |
| Coding | 47.6 | — |
| Standard Benchmarks | ||
| GPQA | 84.0% | — |
| HLE | 18.6% | — |
| SciCode | 45.7% | — |
| LCR | 58.3% | — |
| IFBench | 44.6% | — |
| TAU-bench v2 | 84.8% | — |
| TerminalBench Hard | 48.5% | — |
Key Takeaways
GPT-4.5 (Preview) offers the best value at $0.00/1M, making it ideal for high-volume applications and cost-conscious projects.
Claude Opus 4.6 (Non-reasoning, High Effort) has the strongest reasoning profile with a 49.7 reasoning score, combining the available reasoning-heavy benchmarks.
Claude Opus 4.6 (Non-reasoning, High Effort) reaches a 47.6 coding index, making it the top choice for software development and code generation tasks.
All models support context windows of ∞+ tokens, suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
Claude Opus 4.6 (Non-reasoning, High Effort)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
GPT-4.5 (Preview)
- Cost-sensitive applications
- High-volume processing
