GPT-5.4 vs Claude Sonnet 4.6
Pricing, context window, and benchmark comparison · Last updated April 2026
GPT-5.4 is cheaper than Claude Sonnet 4.6 at $2.50/1M/1M vs $3.00/1M/1M input tokens — a 1.2x cost difference. GPT-5.4 scores higher on quality benchmarks (ELO 1420). Choose GPT-5.4 for cost-sensitive workloads; both are strong choices depending on your budget.
Which is cheaper: GPT-5.4 or Claude Sonnet 4.6?
GPT-5.4 is the cheaper option at $2.50/1M per 1M input tokens, compared to $3.00/1M for Claude Sonnet 4.6. That is a 1.2x cost difference on input tokens. Output pricing follows a similar pattern: GPT-5.4 charges $15.00/1M/1M vs $15.00/1M/1M for Claude Sonnet 4.6.
Which has better quality: GPT-5.4 or Claude Sonnet 4.6?
Based on LMSYS Chatbot Arena rankings, GPT-5.4 achieves a higher ELO score (1420 vs 1390), suggesting stronger performance on open-ended tasks. GPT-5.4 excels at openai flagship — top-tier reasoning, coding, and multimodal. Claude Sonnet 4.6 is known for best combination of speed and intelligence in the claude family.
Which should you choose: GPT-5.4 or Claude Sonnet 4.6?
- → OpenAI flagship — top-tier reasoning, coding, and multimodal
- → Native computer use and tool search
- → 272K standard context (expandable to 1M)
- → Best combination of speed and intelligence in the Claude family
- → 1M token context window at standard pricing
- → Extended thinking and adaptive thinking supported
Frequently Asked Questions
Which is cheaper: GPT-5.4 or Claude Sonnet 4.6?
GPT-5.4 is cheaper at $2.50/1M per 1M input tokens, making it 1.2x more affordable.
Which has better quality: GPT-5.4 or Claude Sonnet 4.6?
GPT-5.4 scores higher on the LMSYS Chatbot Arena with an ELO of 1420, suggesting better overall quality for most tasks.
Which has a larger context window: GPT-5.4 or Claude Sonnet 4.6?
Claude Sonnet 4.6 has a larger context window at 1000K tokens.
Should I choose GPT-5.4 or Claude Sonnet 4.6?
Choose GPT-5.4 if cost is the priority. Choose GPT-5.4 if benchmark quality is most important. Consider your specific use case: GPT-5.4 is best for coding and reasoning, while Claude Sonnet 4.6 excels at coding and function-calling.
Is GPT-5.4 or Claude Sonnet 4.6 open source?
GPT-5.4 is proprietary. Claude Sonnet 4.6 is proprietary.