Amux Special

GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for text and image inputs, enabling high-context reasoning, coding, and multimodal analysis within the same workflow.

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Output:

Input:

$2.5$1.25/1M

Output:

$15$7.5/1M

Context length:

1.05M

Max output:

128K

GPT-5.4 mini brings the core capabilities of GPT-5.4 to a faster, more efficient model optimized for high-throughput workloads. It supports text and image inputs with strong performance across reasoning, coding, and tool use, while reducing latency and cost for large-scale deployments.

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Output:

Input:

$0.75$0.375/1M

Output:

$4.5$2.25/1M

Context length:

400K

Max output:

128K

GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token context window (922K input, 128K output) with support for text and image inputs, enabling large-scale reasoning, coding, and multimodal workflows within a single system.

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Output:

Input:

$5$0.25/1M

Output:

$30$1.5/1M

Context length:

1.05M

Max output:

128K

GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for its price tier.

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Output:

Input:

$0.2$0.1/1M

Output:

$1.2$0.6/1M

Context length:

1.05M

Max output:

128K

GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series. It is suited for complex reasoning, coding, and agentic workflows, and is particularly strong at command-line and multi-step coding tasks and long-horizon problem solving.

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Output:

Input:

$5$0.25/1M

Output:

$30$1.5/1M

Context length:

1.05M

Max output:

128K

GPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic tasks where capability and cost need to be balanced, offering strong performance at roughly half the cost of Sol.

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Output:

Input:

$2$0.1/1M

Output:

$12$0.6/1M

Context length:

1.05M

Max output:

128K

GPT-6 Astra is OpenAI's flagship model for demanding end-to-end work. It is suited for advanced analysis, software engineering, deep research, scientific work, and document creation, with particular strengths in long-horizon agentic tasks that involve computer and browser use.

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Output:

Input:

$10$0.5/1M

Output:

$50$2.5/1M

Context length:

1.05M

Max output:

128K