GPT-6 Sol Pro

What is GPT-6 Sol Pro?

GPT-6 Sol Pro is the same underlying model as GPT-6 Sol, served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks.

Per 1M input / output tokens

$2.00 / $10.00

Starting price

Context window

1.05M

Up to 128K output per reply

Input

file + image + text

Output: text

What GPT-6 Sol Pro can do

• Multi-step reasoning

• Tool-using agents

• Structured outputs (JSON)

• Image understanding

GPT-6 Sol Pro vs similar models: price

What you pay for GPT-6 Sol Pro and the models most like it: the same kind of work, from the families we feature, priced within about three times of it.

• GPT-6 Sol Pro vs Claude Sonnet 5.5

  Claude Sonnet 5.5 costs $5.40: 10% less than GPT-6 Sol Pro.

  −10% at the top tier

  Claude Sonnet 5.5 API 

• GPT-6 Sol Pro vs Gemini 3.5 Flash

  Gemini 3.5 Flash costs $4.725: 21% less than GPT-6 Sol Pro.

  −10% at the top tier

  Gemini 3.5 Flash API 

• GPT-6 Sol Pro vs Qwen3.8 Max

  Qwen3.8 Max costs $3.80: 37% less than GPT-6 Sol Pro.

  −25% at the top tier

  Qwen3.8 Max API 

• GPT-6 Sol Pro vs GLM 5.3

  GLM 5.3 costs $2.465: 59% less than GPT-6 Sol Pro.

  −25% at the top tier

  GLM 5.3 API 

• GPT-6 Sol Pro vs Kimi K3

  Kimi K3 costs $9.00: 1.5× the price of GPT-6 Sol Pro.

  Kimi K3 API 

GPT-6 Sol Pro specs

The technical card for GPT-6 Sol Pro, from the OceanToken catalog.

Context window

1.05M tokens

1,050,000

Max output

128K tokens

128,000

Input

file, image, text

Output

text

Reasoning

Yes

reasoning_effort

Tool calling

Yes

tool_choice

Structured outputs

Yes

response_format

Prompt caching

Reads $0.20

Writes $2.50; per 1M tokens, official price at every tier

GPT-6 Sol Pro model ID and endpoint

OceanToken model ID

openai/gpt-6-sol-proCopied

OpenAI-compatible base URL

https://api.oceantoken.ai/v1Copied

Endpoint

POST /v1/chat/completionsCopied

GPT-6 Sol Pro API pricing

Prices come from the OceanToken catalog as of November 5, 2026. You pay per use from a prepaid balance, with no subscription.

GPT-6 Sol Pro cost calculator

Pick a typical request or enter your own token counts. The calculator uses the starting prices on this page and shows the same workload on the models compared above.

At the starting price (tier 1). Cached input is billed at the cache-read price; cache writes are left out because they depend on how often your prompt prefix changes. Your console shows the rate for your tier.

What a request costs

Input and output tokens at the starting price above, with no caching.

How to use GPT-6 Sol Pro on OceanToken

Three steps from no account to a working request. The same key and balance work for every model in the catalog.

1. 1

   Create an account and get an API key

   Create an OceanToken account, then create a key. One key works for every model your account can use.

   Get API Key 

2. 2

   Add credits

   OceanToken is prepaid: add credits, and each request is billed from that balance. Your console shows the rate for your tier.

   Add credits 

3. 3

   Call GPT-6 Sol Pro from your code

   Point an OpenAI SDK at https://api.oceantoken.ai/v1 and use the model ID openai/gpt-6-sol-pro. The code below sends one request.

   from openai import OpenAI
   # Your API Key from the OceanToken console
   client = OpenAI(base_url="https://api.oceantoken.ai/v1",
                   api_key="YOUR_API_KEY")
   reply = client.chat.completions.create(
       model="openai/gpt-6-sol-pro",
       messages=[{"role": "user", "content": "Hello"}])
   print(reply.choices[0].message.content)

   Specs, request sample and alternatives in the docs