Frequently Asked Questions
What is the cheapest GPT-5.4 nano alternative?
Llama 3.1 8B (via Together.ai) is the cheapest at $0.10/$0.10 per million tokens — 50% cheaper on input and 92% cheaper on output. GPT-oss 20B at $0.08/$0.35 is even cheaper on input.
How much cheaper is Mistral Small 4 vs GPT-5.4 nano?
Mistral Small 4 costs $0.10 input / $0.30 output per million tokens, compared to GPT-5.4 nano's $0.20/$1.25. That's 50% cheaper on input and 76% cheaper on output.
Is GPT-oss 20B a good replacement for GPT-5.4 nano?
Yes, GPT-oss 20B at $0.08/$0.35 per million tokens is 60% cheaper on input and 72% cheaper on output. It's OpenAI's own open-weight model with comparable quality for most tasks.
Can I switch from GPT-5.4 nano without rewriting my code?
Yes, most alternatives support OpenAI-compatible APIs. Switching to GPT-oss 20B, DeepSeek V4 Flash, or Mistral Small 4 typically requires just changing the API endpoint and key.
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