Claude Haiku 4.5 vs GPT-5.4 nano
Pricing, context window, and benchmark comparison · Last updated April 2026
GPT-5.4 nano is cheaper than Claude Haiku 4.5 at $0.20/1M/1M vs $1.00/1M/1M input tokens — a 5.0x cost difference. Claude Haiku 4.5 scores higher on quality benchmarks (ELO 1320). Choose GPT-5.4 nano for cost-sensitive workloads; choose Claude Haiku 4.5 for maximum quality.
Which is cheaper: Claude Haiku 4.5 or GPT-5.4 nano?
GPT-5.4 nano is the cheaper option at $0.20/1M per 1M input tokens, compared to $1.00/1M for Claude Haiku 4.5. That is a 5.0x cost difference on input tokens. Output pricing follows a similar pattern: Claude Haiku 4.5 charges $5.00/1M/1M vs $1.25/1M/1M for GPT-5.4 nano.
Which has better quality: Claude Haiku 4.5 or GPT-5.4 nano?
Based on LMSYS Chatbot Arena rankings, Claude Haiku 4.5 achieves a higher ELO score (1320 vs 1280), suggesting stronger performance on open-ended tasks. Claude Haiku 4.5 excels at near-frontier intelligence at the lowest claude price tier. GPT-5.4 nano is known for cheapest openai model — $0.20/1m input.
Which should you choose: Claude Haiku 4.5 or GPT-5.4 nano?
- → Near-frontier intelligence at the lowest Claude price tier
- → Fastest Claude model
- → 200K context window
- → 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 Haiku 4.5 or GPT-5.4 nano?
GPT-5.4 nano is cheaper at $0.20/1M per 1M input tokens, making it 5.0x more affordable.
Which has better quality: Claude Haiku 4.5 or GPT-5.4 nano?
Claude Haiku 4.5 scores higher on the LMSYS Chatbot Arena with an ELO of 1320, suggesting better overall quality for most tasks.
Which has a larger context window: Claude Haiku 4.5 or GPT-5.4 nano?
GPT-5.4 nano has a larger context window at 272K tokens.
Should I choose Claude Haiku 4.5 or GPT-5.4 nano?
Choose GPT-5.4 nano if cost is the priority. Choose Claude Haiku 4.5 if benchmark quality is most important. Consider your specific use case: Claude Haiku 4.5 is best for fast-response and customer-support, while GPT-5.4 nano excels at low-cost and fast-response.
Is Claude Haiku 4.5 or GPT-5.4 nano open source?
Claude Haiku 4.5 is proprietary. GPT-5.4 nano is proprietary.