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GPT-5.4

OpenCode

GPT-5.4 by OpenCode costs $2.50 per 1M input tokens and $15.00 per 1M output tokens, with a 1.1M-token context window.

Pricing

Input (per 1M tokens)
$2.50
Output (per 1M tokens)
$15.00
Cached input (per 1M)
$0.25
ProviderInput / 1MOutput / 1M
OpenCode Zen$2.50$15.00
OpenCode$2.50$15.00

Specifications

Provider
OpenCode
Context window
1.1M tokens
Parameters
—
Released
Mar 2026
Open weights
No
Frontier model
No

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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. Output tokens cost more than input.

What is GPT-5.4's context window?

GPT-5.4 supports a context window of 1.1M tokens — the maximum prompt plus response length it can handle in a single request.

Is GPT-5.4 open weight?

No — GPT-5.4 is a closed/proprietary model accessed via API.

Data as of 2026-10-14. Source: models.dev (open). Pricing is per 1M tokens (USD); confirm with the provider before production use.