gpt-5.4 alternatives

gpt-5.5

Matching features: Tool calling, Long context, JSON mode, Streaming, Reasoning, text input, text output.

Original features not confirmed on this alternative: None. Missing reports are unknown, not confirmed losses.

Context: 1050000 → 1050000 tokens (+0).

$0.20 USD input and $1.00 USD output per 1M tokens. Prices use the same billing mode, currency, and unit; compare the rates above.

Change the request model ID from gpt-5.4 to gpt-5.5.

Original interfaces: POST /v1/chat/completions. Alternative interfaces: POST /v1/chat/completions. The published API interfaces are unchanged.

gemini-3-flash

Matching features: Tool calling, Long context, JSON mode, Streaming, Reasoning, text input, text output.

Original features not confirmed on this alternative: None. Missing reports are unknown, not confirmed losses.

Context: 1050000 → 1048576 tokens (-1424).

$0.03 USD input and $0.08 USD output per 1M tokens. Prices use the same billing mode, currency, and unit; compare the rates above.

Change the request model ID from gpt-5.4 to gemini-3-flash.

Original interfaces: POST /v1/chat/completions. Alternative interfaces: POST /v1/chat/completions. The published API interfaces are unchanged.

deepseek-v4-flash:0731

Matching features: Tool calling, Long context, JSON mode, Streaming, Reasoning, text input, text output.

Original features not confirmed on this alternative: None. Missing reports are unknown, not confirmed losses.

Context: 1050000 → 1024000 tokens (-26000).

$0.06 USD input and $0.18 USD output per 1M tokens. Prices use the same billing mode, currency, and unit; compare the rates above.

Change the request model ID from gpt-5.4 to deepseek-v4-flash:0731.

Original interfaces: POST /v1/chat/completions. Alternative interfaces: POST /v1/chat/completions. The published API interfaces are unchanged.

claude-fable-5

Matching features: Tool calling, Long context, JSON mode, Streaming, Reasoning, text input, text output.

Original features not confirmed on this alternative: None. Missing reports are unknown, not confirmed losses.

Context: 1050000 → 1000000 tokens (-50000).

$4.50 USD input and $30.00 USD output per 1M tokens. Prices use the same billing mode, currency, and unit; compare the rates above.

Change the request model ID from gpt-5.4 to claude-fable-5.

Original interfaces: POST /v1/chat/completions. Alternative interfaces: POST /v1/chat/completions, POST /v1/messages. Adjust the endpoint and request body to the selected interface.

Original request

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A verified request for this exact model. Add your API key and run it.

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cURLPythonJavaScript

curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.4",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'

Alternative request

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A verified request for this exact model. Add your API key and run it.

Read the docs

cURLPythonJavaScript

curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-fable-5",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'

claude-fable-5-1

Matching features: Tool calling, Long context, JSON mode, Streaming, Reasoning, text input, text output.

Original features not confirmed on this alternative: None. Missing reports are unknown, not confirmed losses.

Context: 1050000 → 1000000 tokens (-50000).

$4.00 USD input and $15.00 USD output per 1M tokens. Prices use the same billing mode, currency, and unit; compare the rates above.

Change the request model ID from gpt-5.4 to claude-fable-5-1.

Original interfaces: POST /v1/chat/completions. Alternative interfaces: POST /v1/chat/completions, POST /v1/messages. Adjust the endpoint and request body to the selected interface.

Original request

Start building

A verified request for this exact model. Add your API key and run it.

Read the docs

cURLPythonJavaScript

curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.4",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'

Alternative request

Start building

A verified request for this exact model. Add your API key and run it.

Read the docs

cURLPythonJavaScript

curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-fable-5-1",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'

claude-opus-4-8

Matching features: Tool calling, Long context, JSON mode, Streaming, Reasoning, text input, text output.

Original features not confirmed on this alternative: None. Missing reports are unknown, not confirmed losses.

Context: 1050000 → 1000000 tokens (-50000).

$2.25 USD input and $12.19 USD output per 1M tokens. Prices use the same billing mode, currency, and unit; compare the rates above.

Change the request model ID from gpt-5.4 to claude-opus-4-8.

Original interfaces: POST /v1/chat/completions. Alternative interfaces: POST /v1/chat/completions, POST /v1/messages. Adjust the endpoint and request body to the selected interface.

Original request

Start building

A verified request for this exact model. Add your API key and run it.

Read the docs

cURLPythonJavaScript

curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.4",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'

Alternative request

Start building

A verified request for this exact model. Add your API key and run it.

Read the docs

cURLPythonJavaScript

curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-opus-4-8",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'