Claude Sonnet 4.6 vs GPT-5.4 nano
Pricing, context window, and benchmark comparison · Last updated April 2026
GPT-5.4 nano is cheaper than Claude Sonnet 4.6 at $0.20/1M/1M vs $3.00/1M/1M input tokens — a 15.0x cost difference. Claude Sonnet 4.6 scores higher on quality benchmarks (ELO 1390). Choose GPT-5.4 nano for cost-sensitive workloads; choose Claude Sonnet 4.6 for maximum quality.
Which is cheaper: Claude Sonnet 4.6 or GPT-5.4 nano?
GPT-5.4 nano is the cheaper option at $0.20/1M per 1M input tokens, compared to $3.00/1M for Claude Sonnet 4.6. That is a 15.0x cost difference on input tokens. Output pricing follows a similar pattern: Claude Sonnet 4.6 charges $15.00/1M/1M vs $1.25/1M/1M for GPT-5.4 nano.
Which has better quality: Claude Sonnet 4.6 or GPT-5.4 nano?
Based on LMSYS Chatbot Arena rankings, Claude Sonnet 4.6 achieves a higher ELO score (1390 vs 1280), suggesting stronger performance on open-ended tasks. Claude Sonnet 4.6 excels at best combination of speed and intelligence in the claude family. GPT-5.4 nano is known for cheapest openai model — $0.20/1m input.
Which should you choose: Claude Sonnet 4.6 or GPT-5.4 nano?
- → Best combination of speed and intelligence in the Claude family
- → 1M token context window at standard pricing
- → Extended thinking and adaptive thinking supported
- → Cheapest OpenAI model — $0.20/1M input
- → Good at classification, routing, and extraction
- → 272K context window even at low price
Frequently Asked Questions
Which is cheaper: Claude Sonnet 4.6 or GPT-5.4 nano?
GPT-5.4 nano is cheaper at $0.20/1M per 1M input tokens, making it 15.0x more affordable.
Which has better quality: Claude Sonnet 4.6 or GPT-5.4 nano?
Claude Sonnet 4.6 scores higher on the LMSYS Chatbot Arena with an ELO of 1390, suggesting better overall quality for most tasks.
Which has a larger context window: Claude Sonnet 4.6 or GPT-5.4 nano?
Claude Sonnet 4.6 has a larger context window at 1000K tokens.
Should I choose Claude Sonnet 4.6 or GPT-5.4 nano?
Choose GPT-5.4 nano if cost is the priority. Choose Claude Sonnet 4.6 if benchmark quality is most important. Consider your specific use case: Claude Sonnet 4.6 is best for coding and function-calling, while GPT-5.4 nano excels at low-cost and fast-response.
Is Claude Sonnet 4.6 or GPT-5.4 nano open source?
Claude Sonnet 4.6 is proprietary. GPT-5.4 nano is proprietary.