LLM7 model guide

gpt-5-nano alternatives

Compare active chat alternatives to gpt-5-nano, including capabilities, context, pricing, and API changes.

Alternatives to gpt-5-nano

The original model is retired. 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: $0.05 USD input and $0.40 USD output per 1M tokens. Original context: 400,000 tokens.

gemini-3.1-flash-lite

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

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

Context: 400000 → 256000 tokens (-144000).

$0.02 USD input and $0.04 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-nano to gemini-3.1-flash-lite.

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

claude-fable-5-1

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

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

Context: 400000 → 1000000 tokens (+600000).

$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-nano 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

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

claude-opus-4-8

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

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

Context: 400000 → 1000000 tokens (+600000).

$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-nano 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": "gpt-5-nano",
    "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!" }
    ]
  }'

claude-opus-5

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

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

Context: 400000 → 1000000 tokens (+600000).

$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 gpt-5-nano 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": "gpt-5-nano",
    "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!" }
    ]
  }'

claude-sonnet-4-6

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

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

Context: 400000 → 1000000 tokens (+600000).

$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 gpt-5-nano 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": "gpt-5-nano",
    "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!" }
    ]
  }'

gemini-3.7-flash

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

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

Context: 400000 → 1000000 tokens (+600000).

$0.06 USD input and $0.30 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-nano to gemini-3.7-flash.

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

Explore related pages

Model catalog Model comparisons Capabilities Integrations Cost calculators Token calculator Tool calling models Vision models Long context models JSON mode models Streaming models Reasoning models Hermes Agent with LLM7 OpenClaw with LLM7 n8n with LLM7 LangChain with LLM7 Vercel AI SDK with LLM7 Customer support cost calculator