Claude Haiku 4.5 vs GPT-5.4 Nano

For a typical workload (100,000 requests / mo), GPT-5.4 Nano costs 77% less — $74.00/mo vs $320.00/mo.

Projected monthly cost

Rows open both models in the calculator — adjust volume and token counts there.

Very low latency for high-volume, simple tasks — classification, short summaries, and lightweight chat where response time matters more than depth.

Noticeably weaker on multi-step reasoning and long-context synthesis; pairing with a larger model for escalation is common.

Cheapest OpenAI option for high-throughput classification, tagging, and routing — ideal as a first-pass filter before a stronger model.

Limited reasoning depth means it should be treated as a triage layer, not a final answer source, for anything business-critical.

Vendor list rates · per-request examples assume 1,200 input + 400 output tokens.