> ## Documentation Index
> Fetch the complete documentation index at: https://veniceai-feat-models-redesign.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# GPT-5.6 Sol API

> GPT-5.6 Sol API on Venice: 1M context, $5.00 input and $25.00 output per 1M tokens. Anonymized access without your identity. Pricing, specs and code examples.

export const HubMount = ({view, children, ...props}) => {
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        return res.json();
      }).catch(err => i + 1 < urls.length ? load(i + 1) : Promise.reject(err));
      const Frag = <></>.type;
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<HubMount view="ModelPage" data={{"family":{"slug":"gpt-5-6-sol","name":"GPT-5.6 Sol","modality":"text","task":"chat","provider":"openai","description":"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.","primary":"openai-gpt-56-sol","variants":["openai-gpt-56-sol"],"created":1783555200,"updated":1783555200,"privacy":["anonymized"]},"models":[{"id":"openai-gpt-56-sol","name":"GPT-5.6 Sol","type":"text","modality":"text","task":"chat","variant":"standard","provider":"openai","created":1783555200,"description":"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.","source":"https://openrouter.ai/openai/gpt-5.6-sol","privacy":"anonymized","text":{"context":1000000,"maxOutput":128000,"reasoning":{"supported":true,"effort":["none","low","medium","high","xhigh","max"],"defaultEffort":"high"},"caps":{"tools":true,"structured":true,"vision":true,"maxImages":10,"webSearch":true}},"pricing":{"input":5,"output":25,"cacheRead":0.5,"cacheWrite":6.25,"blended":10,"extended":{"threshold":272000,"input":10,"output":37.5,"cacheRead":1,"cacheWrite":12.5}},"headline":{"value":10,"unit":"per 1M tokens","basis":"blended"},"endpoints":[{"id":"chat","method":"POST","path":"/chat/completions","name":"Chat Completions","status":"stable"},{"id":"responses","method":"POST","path":"/responses","name":"Responses","status":"alpha","recommended":true,"recommendation":"OpenAI reasoning models are designed around the Responses API: reasoning, tool calls and messages come back as typed output items. Venice's /responses endpoint is in alpha."}],"family":"gpt-5-6-sol"}],"related":{"similar":[{"slug":"claude-opus-5-5","name":"Claude Opus 5.5","provider":"anthropic","modality":"text","privacy":["anonymized"],"created":1789689600,"headline":{"value":9.6,"unit":"per 1M tokens","basis":"blended"},"variants":2},{"slug":"claude-opus-5","name":"Claude Opus 5","provider":"anthropic","modality":"text","privacy":["anonymized"],"created":1784764800,"headline":{"value":12,"unit":"per 1M tokens","basis":"blended"},"variants":2},{"slug":"claude-opus-4-8","name":"Claude Opus 4.8","provider":"anthropic","modality":"text","privacy":["anonymized"],"created":1779926400,"headline":{"value":12,"unit":"per 1M tokens","basis":"blended"},"variants":2},{"slug":"kimi-k3","name":"Kimi K3","provider":"moonshot","modality":"text","privacy":["private","e2ee"],"created":1784160000,"headline":{"value":7.5,"unit":"per 1M tokens","basis":"blended"},"variants":3}],"versions":[{"slug":"gpt-6-sol","name":"GPT-6 Sol","provider":"openai","modality":"text","privacy":["anonymized"],"created":1790035200,"headline":{"value":5,"unit":"per 1M tokens","basis":"blended"},"variants":1}]},"providers":{"openai":{"slug":"openai","name":"OpenAI","logo":"/images/icons/models/openai.svg"},"anthropic":{"slug":"anthropic","name":"Anthropic","logo":"/images/icons/models/opus.svg"},"moonshot":{"slug":"moonshot","name":"Moonshot AI","logo":"/images/icons/models/kimi.svg"}},"faq":[{"q":"How much does the GPT-5.6 Sol API cost?","a":"$5.00 per 1M input tokens and $25.00 per 1M output tokens, with cached input at $0.50 per 1M. Prices are in USD and can be paid in DIEM at parity."},{"q":"What is the GPT-5.6 Sol model ID?","a":"Use `openai-gpt-56-sol` as the `model` parameter."},{"q":"Is the GPT-5.6 Sol API private?","a":"GPT-5.6 Sol is anonymized: Venice forwards requests to the provider without your identity, but the provider may retain prompt data, so use a private model for sensitive work."},{"q":"What is the context window of GPT-5.6 Sol?","a":"1M tokens of context, with up to 125K output tokens per response."},{"q":"What does GPT-5.6 Sol support?","a":"GPT-5.6 Sol supports function calling, structured outputs, reasoning, image input, web search and prompt caching. Reasoning effort is adjustable with `reasoning_effort`: none, low, medium, high, xhigh and max (default high)."},{"q":"Which endpoint does the GPT-5.6 Sol API use?","a":"Call `POST /responses`. `/chat/completions` is also supported. OpenAI reasoning models are designed around the Responses API: reasoning, tool calls and messages come back as typed output items. Venice's /responses endpoint is in alpha."}]}} />

<div className="vx-static">
  <Accordion title="Plain-text specification">
    # GPT-5.6 Sol API

    GPT-5.6 Sol is a large language model by OpenAI, available on the Venice API as `openai-gpt-56-sol`. Requests are anonymized, so the provider never sees your identity.

    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.

    ## GPT-5.6 Sol API pricing

    | Model ID | Variant | Privacy | Price |
    | - | - | - | - |
    | `openai-gpt-56-sol` | Standard | Anonymized | $5.00 input / $25.00 output per 1M tokens |

    ## GPT-5.6 Sol specifications

    | Spec | Value |
    | - | - |
    | Provider | OpenAI |
    | Released | Jul 9, 2026 |
    | Privacy | Anonymized |
    | Context window | 1M tokens |
    | Max output | 125K tokens |
    | Reasoning effort | none, low, medium, high, xhigh, max |

    ## How to use the GPT-5.6 Sol API

    Send requests to `POST https://api.venice.ai/api/v1/responses` with `"model": "openai-gpt-56-sol"` and your API key.

    ```bash theme={null}
    curl https://api.venice.ai/api/v1/responses \
      -H "Authorization: Bearer $VENICE_API_KEY" \
      -H "Content-Type: application/json" \
      -d '{
        "model": "openai-gpt-56-sol",
        "input": "Explain TEE attestation in two sentences.",
        "reasoning": { "effort": "high" }
      }'
    ```

    ## GPT-5.6 Sol API FAQ

    ### How much does the GPT-5.6 Sol API cost?

    $5.00 per 1M input tokens and $25.00 per 1M output tokens, with cached input at \$0.50 per 1M. Prices are in USD and can be paid in DIEM at parity.

    ### What is the GPT-5.6 Sol model ID?

    Use `openai-gpt-56-sol` as the `model` parameter.

    ### Is the GPT-5.6 Sol API private?

    GPT-5.6 Sol is anonymized: Venice forwards requests to the provider without your identity, but the provider may retain prompt data, so use a private model for sensitive work.

    ### What is the context window of GPT-5.6 Sol?

    1M tokens of context, with up to 125K output tokens per response.

    ### What does GPT-5.6 Sol support?

    GPT-5.6 Sol supports function calling, structured outputs, reasoning, image input, web search and prompt caching. Reasoning effort is adjustable with `reasoning_effort`: none, low, medium, high, xhigh and max (default high).

    ### Which endpoint does the GPT-5.6 Sol API use?

    Call `POST /responses`. `/chat/completions` is also supported. OpenAI reasoning models are designed around the Responses API: reasoning, tool calls and messages come back as typed output items. Venice's /responses endpoint is in alpha.

    ## Related models

    * [GPT-6 Sol API](/models/gpt-6-sol): $2.50 input / $12.50 output per 1M tokens
    * [Claude Opus 5.5 API](/models/claude-opus-5-5): $4.80 input / $24.00 output per 1M tokens
    * [Claude Opus 5 API](/models/claude-opus-5): $6.00 input / $30.00 output per 1M tokens
    * [Claude Opus 4.8 API](/models/claude-opus-4-8): $6.00 input / $30.00 output per 1M tokens
    * [Kimi K3 API](/models/kimi-k3): $3.75 input / $18.75 output per 1M tokens
  </Accordion>
</div>


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