Claude 3.5 Sonnet vs GPT-5.4 Pro: Specs & Benchmark Comparison
| Characteristic | Claude 3.5 Sonnet | GPT-5.4 Pro |
|---|---|---|
| Company | Anthropic | OpenAI |
| Release Date | June 21, 2024 | March 1, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 200K | 1.0M |
| Context (output) | 200K | 128K |
| Input Price / 1M | $3.00 | $15.00 |
| Output Price / 1M | $15.00 | $225.00 |
| Average Score | 0.8 | 0.0 |
Verdict
GPT-5.4 Pro leads in 2 out of 3 comparison categories.
API Cost
Claude 3.5 Sonnet is 13.3x cheaper: input $3.00/1M vs $15.00/1M tokens.
Context Window
GPT-5.4 Pro supports a larger context: 1M vs 200K tokens.
Recency
GPT-5.4 Pro is newer: released 3/1/2026 vs 6/21/2024.
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Frequently Asked Questions
Which is better for coding — Claude 3.5 Sonnet or GPT-5.4 Pro?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — Claude 3.5 Sonnet or GPT-5.4 Pro?
Claude 3.5 Sonnet is cheaper for input: $3.00 per 1M tokens vs $15.00.
Which has a larger context window — Claude 3.5 Sonnet or GPT-5.4 Pro?
GPT-5.4 Pro supports a larger context: 1,000,000 tokens vs 200,000.
The Claude 3.5 Sonnet and GPT-5.4 Pro comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude 3.5 Sonnet or GPT-5.4 Pro page. See also the complete list of AI model comparisons.