LLM7 model guide

glm-5.3-flash alternatives

Compare active chat alternatives to glm-5.3-flash, including capabilities, context, pricing, and API changes.

Alternatives to glm-5.3-flash

The original model is active. Ranking uses shared reported capabilities and modalities, then the closest known context window, then model ID. Unknown context differences sort last. Similar metadata does not establish equivalent output quality.

Original pricing: $0.15 USD input and $0.55 USD output per 1M tokens. Original context: 1,048,576 tokens.

gpt-5.5

Matching features: Tool calling, Vision, Long context, Streaming, Reasoning, text input, image input, text output.

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

Context: 1048576 → 1050000 tokens (+1424).

$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 glm-5.3-flash to gpt-5.5.

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

Compare glm-5.3-flash and gpt-5.5

claude-fable-5-1

Matching features: Tool calling, Vision, Long context, Streaming, Reasoning, text input, image input, text output.

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

Context: 1048576 → 1000000 tokens (-48576).

$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 glm-5.3-flash 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

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

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curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "glm-5.3-flash",
    "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

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!" }
    ]
  }'

Compare glm-5.3-flash and claude-fable-5-1

claude-opus-4-8

Matching features: Tool calling, Vision, Long context, Streaming, Reasoning, text input, image input, text output.

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

Context: 1048576 → 1000000 tokens (-48576).

$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 glm-5.3-flash 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

curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "glm-5.3-flash",
    "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

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!" }
    ]
  }'

Compare glm-5.3-flash and claude-opus-4-8

claude-opus-5

Matching features: Tool calling, Vision, Long context, Streaming, Reasoning, text input, image input, text output.

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

Context: 1048576 → 1000000 tokens (-48576).

$2.50 USD input and $12.50 USD output per 1M tokens. Prices use the same billing mode, currency, and unit; compare the rates above.

Change the request model ID from glm-5.3-flash to claude-opus-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

Start building

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

Read the docs

curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "glm-5.3-flash",
    "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

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

Compare glm-5.3-flash and claude-opus-5

claude-sonnet-4-6

Matching features: Tool calling, Vision, Long context, Streaming, Reasoning, text input, image input, text output.

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

Context: 1048576 → 1000000 tokens (-48576).

$0.12 USD input and $0.45 USD output per 1M tokens. Prices use the same billing mode, currency, and unit; compare the rates above.

Change the request model ID from glm-5.3-flash to claude-sonnet-4-6.

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

curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "glm-5.3-flash",
    "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

curl https://api.llm7.io/v1/chat/completions \
  -H "Authorization: Bearer $LLM7_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4-6",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'

Compare glm-5.3-flash and claude-sonnet-4-6

gemini-3.8-flash-high

Matching features: Tool calling, Vision, Long context, Streaming, Reasoning, text input, image input, text output.

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

Context: 1048576 → 1000000 tokens (-48576).

$0.05 USD input and $0.15 USD output per 1M tokens. Prices use the same billing mode, currency, and unit; compare the rates above.

Change the request model ID from glm-5.3-flash to gemini-3.8-flash-high.

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

Compare glm-5.3-flash and gemini-3.8-flash-high

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