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OpenAI

GPT-5.4 Mini

GPT-5.4 Mini is a OpenAI model with 400K context, $0.75 in / $4.50 out per million tokens, last verified October 25, 2026. Open weights: no. Status: Legacy. Public-board scores are linked to the publisher; vendor-only figures stay in the watch-out, not on the board.

GPT-5.4 Mini is OpenAI's efficient mid-tier for high-volume, well-scoped tasks at $0.75/$4.50.

Recorded profile verification October 25, 2026Individual provider fields may change

AI model specification details
SpecificationGPT-5.4 Mini
ProviderOpenAI
TierBalanced
Context window400K
Max output128K
Input / 1M tokens$0.75
Output / 1M tokens$4.50
WeightsClosed
ParametersNot verifiedUnverified
Reasoning levelsnone, low, medium, high, xhigh
Modalitiestext, image
API model idgpt-5.4-mini
ReleasedMarch 17, 2026

Pricing tiers: All amounts are USD per MTok. Standard: input/output $0.75/$4.50, cached input $0.075. Batch: input/output $0.375/$2.25, cached input $0.0375. Flex: input/output $0.375/$2.25, cached input $0.0375. Fast: input/output $1.50/$9.00, cached input $0.15. Regional processing and FedRAMP add 10% where the model and route are eligible; region eligibility is separate from a quoted tariff. Server-side tools and their tokens can add charges.

Best for

  • High-volume calls
  • Mixed workloads
  • Cost-sensitive production

Watch out

400K context (vs 1.05M on GPT-5.4/5.5/5.6/6); GPT-6 Luna is cheaper and has the full 1.05M context.

Source receipts

Catalog figures for this model were checked against the following sources.

Common questions

GPT-5.4 Mini

Answered from the verified figures on this page rather than general guidance.

How much does GPT-5.4 Mini cost per million tokens?
GPT-5.4 Mini lists base rates of $0.75 per million input tokens and $4.50 per million output tokens. Estimate both input and output token volume and any additional charges for your workload. All amounts are USD per MTok. Standard: input/output $0.75/$4.50, cached input $0.075. Batch: input/output $0.375/$2.25, cached input $0.0375. Flex: input/output $0.375/$2.25, cached input $0.0375. Fast: input/output $1.50/$9.00, cached input $0.15. Regional processing and FedRAMP add 10% where the model and route are eligible; region eligibility is separate from a quoted tariff. Server-side tools and their tokens can add charges.
What is GPT-5.4 Mini's context window?
GPT-5.4 Mini accepts about 400K tokens of context. That only matters if you routinely send very long documents, large codebases, or multi-turn histories that approach that limit.
What is GPT-5.4 Mini best for?
GPT-5.4 Mini is a balanced tier from OpenAI. It suits high-volume calls, mixed workloads, cost-sensitive production. 400K context (vs 1.05M on GPT-5.4/5.5/5.6/6); GPT-6 Luna is cheaper and has the full 1.05M context.
Model comparison catalogBenchmark library