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OpenAI GPT 6.1 Sol: AI Large Language Models

GPT 6.1 Sol is OpenAI's near-Astra reasoning model at one-fifth the token price. Supports text and image inputs, reasoning effort control, and web search. Token-based pricing: $2.00/M input tokens, $10.00/M output tokens. Two endpoints: standard async (/gpt-6-1-sol) and live streaming (/gpt-6-1-sol/stream) via SSE.

Interactive model controls

GPT 6.1 Sol is OpenAI's GPT-6 model positioned between Astra and Luna, delivering near-Astra agentic coding, computer-use, and professional-work capability at one-fifth of Astra's token price. Supports mixed text and image inputs, adjustable reasoning effort, and integrated web search. Pricing: $2.00/M input tokens, $10.00/M output tokens.

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Overview

About this model

GPT 6.1 Sol is OpenAI's GPT-6 model positioned between GPT 6 Astra and GPT-6 Luna. It delivers near-Astra performance in agentic coding, computer use, and professional work at one-fifth of Astra's standard token prices, with adjustable reasoning effort, mixed text and image input, and an integrated web search tool. Pricing: $2.00 per million input tokens and $10.00 per million output tokens — matches OpenAI's own published rate.

1Agentic Coding: Debug, refactor, and trace issues across large codebases.
2Computer-Use & Business Automation: Drive multi-step workflows that interact with applications.
3Real-Time Q&A: Enable web_search_switch for answers that need current information.
4Multimodal Review: Pass an image_url with a prompt for image-grounded analysis.
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Pricing & Value

Cost analysis

muapiapp$2.00/M input, $10.00/M output

Token-based billing, matching OpenAI's own published rate. Minimum $0.0004 per call.

Fal.aiNot available

No dedicated GPT 6.1 Sol endpoint at this time.

ReplicateNot available

No dedicated GPT 6.1 Sol endpoint at this time.

** Competitor pricing is estimated based on similar model architectures and usage tiers.

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Technical Details

Configuration schema

Promptstring

The user message or instruction.

Default ValueSummarize this article in three bullet points.
Image URLstring

Optional image URL for multimodal requests.

Default Valueundefined
System Promptstring

Optional system-level instruction to guide model behavior.

Default ValueYou are an expert tutor.
Web Search Switchboolean

Enable web search tool for real-time information retrieval.

Default Valuefalse
Reasoning EffortEnum (4 options)

Level of reasoning depth: low, medium, high, or xhigh.

Default Valuelow
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Implementation Guide

Developer documentation

Standard (Async)

POST /api/v1/gpt-6-1-sol — returns a request_id; poll for the result via /api/v1/predictions/{id}/result.

Streaming (SSE)

POST /api/v1/gpt-6-1-sol/stream — returns a live SSE stream. Each chunk: data: {"choices":[{"delta":{"content":"text"}}]}, ending with data: [DONE].

See Streaming Documentation for full code examples.

cURL Example

curl -X POST "https://api.muapi.ai/api/v1/gpt-6-1-sol" \
  -H "Authorization: Bearer $YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "Trace why this test is flaky and propose a fix.",
    "reasoning_effort": "high"
  }'
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Common Questions

Frequently asked

How is pricing calculated for GPT 6.1 Sol?

Pricing is token-based at $2.00 per million input tokens and $10.00 per million output tokens, with a minimum charge of $0.0004 per call.

What is reasoning effort control?

Pass a reasoning_effort value of 'low', 'medium', 'high', or 'xhigh' to control how much internal reasoning the model performs before responding. Higher levels improve accuracy on hard problems but increase latency and output token usage.

Can GPT 6.1 Sol search the web?

Yes, set web_search_switch to true to let the model call an integrated web search tool. Web search and custom function calling are mutually exclusive per request.

Does GPT 6.1 Sol support images?

Yes, pass an image_url alongside your prompt and optional system_prompt.