Claude Sonnet 4.6 vs GPT-5.4
.
Which Is Cheaper?
At 1M tokens/mo
Claude Sonnet 4.6: $9
GPT-5.4: $9
At 10M tokens/mo
Claude Sonnet 4.6: $90
GPT-5.4: $88
At 100M tokens/mo
Claude Sonnet 4.6: $900
GPT-5.4: $875
Which Performs Better?
| Test | Claude Sonnet 4.6 | GPT-5.4 |
|---|---|---|
| Structured Output | — | — |
| Strategic Analysis | — | — |
| Constrained Rewriting | — | — |
| Creative Problem Solving | — | — |
| Tool Calling | — | — |
| Faithfulness | — | — |
| Classification | — | — |
| Long Context | — | — |
| Safety Calibration | — | — |
| Persona Consistency | — | — |
| Agentic Planning | — | — |
| Multilingual | — | — |