GPT-5.4

The production workhorse of the GPT-5 line in 2026; cheaper than 5.5 with near-flagship quality. 90% cached-input discount.

GPT-5.4 strengths

• Excellent price-to-performance
• Strong reasoning and coding
• 1M context
• Mature ecosystem and tooling

Pricing & context

Cost guide: a typical call of about 10K input + 2K output tokens costs roughly $0.055 at list prices. Worth modelling against cheaper tiers before committing high-volume traffic.

When to choose GPT-5.4

GPT-5.4 is best for most production apps wanting near-flagship quality at roughly half the flagship price. If your workload is more cost-sensitive, weigh it against gpt-oss-120b (≈$0.03 input /1M) first.

GPT-5.4 FAQ

How much does GPT-5.4 cost?

GPT-5.4 is priced at $2.50 per 1M input tokens and $15.00 per 1M output tokens (public API list price), with a ~1M tokens (922K input, 128K output) context window. A typical call of about 10K input and 2K output tokens costs roughly $0.055.

What is GPT-5.4 best for?

GPT-5.4 by OpenAI is best for most production apps wanting near-flagship quality at roughly half the flagship price.

How does GPT-5.4 pricing compare to Meta Muse Spark 1.1?

GPT-5.4 input costs $2.50 per 1M tokens versus $1.25 for Meta Muse Spark 1.1, roughly 2.0x more expensive on input. Output is $15.00 vs $4.25.

Is GPT-5.4 multimodal?

GPT-5.4 supports text, image.

Tools that use GPT-5.4