Model Comparison

o3-pro
vs. Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)

Comparing 2 AI models · 4 benchmarks · OpenAI, Anthropic

Recommended Pick

Anthropic logoClaude Opus 5 (Adaptive Reasoning, Xhigh Effort)8 metric wins

Strongest on: Value, Input price, Output price

Best Value

Anthropic logo

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)

100.0 value score

70.2 reasoning / $10.00/1M

Lowest Price

Anthropic logo

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)

$5.00/1M input price

Best Reasoning

Anthropic logo

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)

70.2 reasoning score

Blends available reasoning benchmarks

Best for Coding

Anthropic logo

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)

77.0 coding index

Composite Indices

Higher is better; speed and price are normalized

Standard Benchmarks

Only benchmarks with data are shown

Differences That Matter

Best value

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) has the strongest quality-to-price mix at 100.0 out of 100 value points.

Price gap

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) is 4.0x cheaper on input tokens than o3-pro.

Reasoning gap

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) leads o3-pro by 11.3 points on reasoning.

Top-pick rationale

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) wins 8 measurable categories, including Value, Input price, Output price, Blended price.

Live compare

Response Face-Off

Run one prompt through the selected models and compare response quality with live speed and cost context.

OpenAI logo

o3-pro

OpenAI

Waiting

TTFT

Time

tok/s

Tokens

Cost

Waiting
Anthropic logo

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)

Anthropic

Waiting

TTFT

Time

tok/s

Tokens

Cost

Waiting

Which answer was more useful?

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EU-hosted inference

Servers in Germany & Finland. Designed to meet strict GDPR and ISO 27001 compliance requirements.

Full Comparison

Metric
OpenAI logoo3-pro
OpenAI
Top Pick
Anthropic logoClaude Opus 5 (Adaptive Reasoning, Xhigh Effort)
Anthropic
Pricing per 1M tokens
Input Cost$20.00/1M$5.00/1M
Output Cost$80.00/1M$25.00/1M
Blended (3:1)$35.00/1M$10.00/1M
Specifications
OrganizationOpenAIAnthropic
Release DateJun 10, 2025Jul 24, 2026
Performance & Speed
Throughput53.5 tok/s
TTFT18850ms
Latency18850ms
Composite Indices
Value Score24.0100.0
Reasoning Score58.970.2
Intelligence33.362.5
Coding77.0
Standard Benchmarks
GPQA84.5%93.7%
HLE54.4%
SciCode55.0%
LCR76.3%

Key Takeaways

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) offers the best value at $5.00/1M,making it ideal for high-volume applications and cost-conscious projects.

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) has the strongest reasoning profile with a 70.2 reasoning score,combining the available reasoning-heavy benchmarks.

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) reaches a 77.0 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

OpenAI logo

o3-pro

  • General-purpose AI
  • Versatile applications
Anthropic logo

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)

  • Cost-sensitive applications
  • High-volume processing
  • Complex reasoning tasks
  • Research & analysis
  • Code generation
  • Software development