Claude 4 Opus vs GPT-5.5
Which model is better? Compare pricing, capabilities, and performance.
Quick Verdict
GPT-5.5 wins on raw benchmarks and context window; Claude 4 Opus wins on pricing value and reliability at scale.
| Category | Claude 4 Opus | GPT-5.5 |
|---|---|---|
| Provider | Anthropic | Openai |
| Input Price | $5.00/M | $5.00/M |
| Output Price | $25.00/M★ | $30.00/M |
| Context Window | 200,000 | 524,288★ |
| Max Output | 8,192 | 65,536★ |
| Coding Score | 96 | 97★ |
| Reasoning Score | 95 | 96★ |
| Speed Score | 65★ | 62 |
| Modalities | text, image | text, image, audio, video |
| Latency | medium | medium |
| Rate Limit | 2,000 RPM | 1,000 RPM |
Detailed Analysis
Claude 4 Opus and GPT-5.5 represent the absolute pinnacle of AI capability from Anthropic and OpenAI respectively. Both are designed for the most demanding enterprise workloads, but they take different approaches.
GPT-5.5 leads on nearly every benchmark, with coding at 97/100 vs Claude's 96, reasoning at 96 vs 95, and math at 95 vs 93. Its 512K context window is 2.5x larger than Claude's 200K, and its 65K max output tokens far exceeds Claude's 8K limit. For tasks that push the boundaries of what AI can do, GPT-5.5 has the edge.
However, Claude 4 Opus offers better value at $5/$25 per million tokens compared to GPT-5.5's $20/$60 — a 4x price difference on input and 2.4x on output. For organizations running AI at scale, this cost difference is significant.
Claude 4 Opus also has a longer production track record with proven reliability and enterprise-grade safety alignment. For mission-critical applications where consistency matters more than peak performance, Claude remains a trusted choice.
For speed, Claude is marginally faster with a speed score of 65 vs GPT-5.5's 62, though both are designed for deep thinking rather than quick responses.
Claude 4 Opus Pros
- +Significantly lower pricing
- +Proven enterprise reliability and safety
- +Longer production track record
Claude 4 Opus Cons
- −Smaller context window (200K vs 512K)
- −Lower benchmark scores across the board
- −Limited to 8K max output tokens
GPT-5.5 Pros
- +Highest benchmark scores in every category
- +Massive 512K context window
- +65K max output tokens for long-form generation
GPT-5.5 Cons
- −Premium pricing at $20/$60 per million tokens
- −Newer model with limited production testing
- −Slower inference on complex tasks
Frequently Asked Questions
Summary
When choosing between Claude 4 Opus and GPT-5.5, consider your specific needs. GPT-5.5 wins on raw benchmarks and context window; Claude 4 Opus wins on pricing value and reliability at scale.We recommend reviewing the full comparison table above and considering your budget, required context window, and primary use case before making a decision.