Claude Opus 5 vs GPT-5.4: Specs & Benchmark Comparison
| Characteristic | Claude Opus 5 | GPT-5.4 |
|---|---|---|
| Company | Anthropic | OpenAI |
| Release Date | July 24, 2026 | March 5, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 128K | 128K |
| Input Price / 1M | $5.00 | $2.50 |
| Output Price / 1M | $25.00 | $15.00 |
| Average Score | 0.6 | 0.9 |
Verdict
Both models show equal results — the choice depends on your specific use case.
Overall Performance
Both models show comparable average scores: Claude Opus 5 — 0.6, GPT-5.4 — 0.9.
API Cost
GPT-5.4 is 1.7x cheaper: input $2.50/1M vs $5.00/1M tokens.
Context Window
Same context size: 1M tokens.
Recency
Claude Opus 5 is newer: released 7/24/2026 vs 3/5/2026.
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Frequently Asked Questions
Which is better for coding — Claude Opus 5 or GPT-5.4?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — Claude Opus 5 or GPT-5.4?
GPT-5.4 is cheaper for input: $2.50 per 1M tokens vs $5.00.
Which has a larger context window — Claude Opus 5 or GPT-5.4?
Claude Opus 5 supports a larger context: 1,000,000 tokens vs 1,000,000.
The Claude Opus 5 and GPT-5.4 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude Opus 5 or GPT-5.4 page. See also the complete list of AI model comparisons.