LiteLLMModels

GPT-5.4 High API Pricing

As of October 10, 2026, GPT-5.4 High costs $2.50 per 1M input tokens and $15.00 per 1M output tokens on AIHubMix, with cache reads at $0.25 per 1M tokens. It has a 1,050,000-token context window and returns up to 128,000 tokens per response.

By OpenAIModel ID aihubmix/gpt-5.4-highPrices updated Checked
Input
$2.50 / 1M tokens
Output
$15.00 / 1M tokens
Cache read
$0.25 / 1M tokens
Context window
1,050,000 tokens
Max output
128,000 tokens
Providers
1
Added to LiteLLM
September 16, 2026

GPT-5.4 High pricing by provider

1 listing across 1 provider. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.

ProviderModel name in LiteLLMInputOutputCache readContext
AIHubMixaihubmix/gpt-5.4-high$2.50$15.00$0.251M

What GPT-5.4 High costs in practice

1,000 requests with 2,000 input and 500 output tokens each

AIHubMix$12.50

100 long-document requests with 100,000 input and 2,000 output tokens each

AIHubMix$28.00

GPT-5.4 High features

Use GPT-5.4 High with LiteLLM

Call GPT-5.4 High through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/chat/completions. LiteLLM tracks the cost of every request at these prices.

Python SDK
from litellm import completion

response = completion(
    model="aihubmix/gpt-5.4-high",
    messages=[{"role": "user", "content": "Hello!"}],
)
Proxy config.yaml
model_list:
  - model_name: gpt-5.4-high
    litellm_params:
      model: aihubmix/gpt-5.4-high
      # credentials: see the provider's LiteLLM docs page
Call the proxy
curl http://0.0.0.0:4000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-1234" \
  -d '{
    "model": "gpt-5.4-high",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

GPT-5.4 High FAQ

How much does GPT-5.4 High cost?

GPT-5.4 High costs $2.50 per 1M input tokens and $15.00 per 1M output tokens on AIHubMix, with cache reads at $0.25 per 1M tokens.

What is the context window of GPT-5.4 High?

GPT-5.4 High has a 1,050,000-token context window and returns up to 128,000 tokens per response.

Which providers offer GPT-5.4 High?

GPT-5.4 High is available from AIHubMix through LiteLLM, using the model name aihubmix/gpt-5.4-high.

How do I call GPT-5.4 High with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="aihubmix/gpt-5.4-high", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

What features does GPT-5.4 High support?

GPT-5.4 High supports function calling, structured output, image input, reasoning, prompt caching and web search.

When did LiteLLM add GPT-5.4 High?

GPT-5.4 High was added to LiteLLM's model price file on September 16, 2026.

Sources

Prices come from LiteLLM's open-source model_prices_and_context_window.json, which LiteLLM uses to calculate the cost of every request. Provider pricing pages:

LiteLLM docs: AIHubMix.

Provider pages: AIHubMix.