GPT-6 Sol

openai/gpt-6-sol
NewFeatured
VisionToolsJSONReasoning
by OpenAI · 2026-09-22

GPT-6 Sol is the cost-efficient high-end model in OpenAI's GPT-6 series, positioned below the flagship GPT-6 Astra and above the fast GPT-6 Luna tier. It is suited for demanding professional and agentic work. Multimodal input (text, image, file), 1.05M-token context, configurable reasoning effort, tools and structured outputs.

ctx1M tokens
Max output128K
Inputtext + image + file
Outputtext
p50 TTFT6.43 s
INPUT$2.00/ 1M tokens
OUTPUT$10.00/ 1M tokens
p50 TTFT6.43 s7d
p95 TTFT10.00 s7d
TRAFFIC23.6Mtokens / 7d

GPT-6 Sol is the cost-efficient high-end model in OpenAI's GPT-6 series, above the fast GPT-6 Luna tier and below the flagship GPT-6 Astra. It targets demanding professional and agentic work at a…

What is GPT-6 Sol?

Code samples

Call from any SDK

OpenAI-compatible — keep the SDK you already use

  • OpenAI SDKhttps://api.orcarouter.ai/v1
import os

from openai import OpenAI

client = OpenAI(
    base_url="https://api.orcarouter.ai/v1",
    api_key=os.environ["ORCAROUTER_API_KEY"],
)

response = client.chat.completions.create(
    model="openai/gpt-6-sol",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

Supported parameters

  • include_reasoning
  • max_completion_tokens
  • max_tokens
  • reasoning
  • reasoning_effort
  • response_format
  • seed
  • structured_outputs
  • tool_choice
  • tools

Pricing

TierInput / 1M tokensOutput / 1M tokensCache read / 1MCache write / 1M
≤ 272K$2.00$10.00$0.200$2.50
≤ ∞$4.00$15.00$0.400$5.00
Tier selected by input token count of each request

Cost calculator

Tokens / month10MM
Input share70%%
Estimated / month $44.00 · With prompt caching $37.70

Estimate based on list price

Tiered pricing — this estimate uses base-tier rates.

Token & cost estimator

Input tokens: 20Cost per request: $0.005040

Estimate only — actual token counts depend on the provider's tokenizer.

Performance

p50 TTFT
6.43 s
Output speed
69.7 tok/s
p95 TTFT
10.00 s
Error rate
12.7%

Public benchmarks

47.6
AA Intelligence
Better than 90% of models compared
#14 of 147
Humanity's Last Exam
47.9
Long-Context Recall
83.7
SciCode
57.6
terminalbench_v4_0
43.9
Source: artificialanalysis.ai

Community buzz

What developers are saying this week

Hacker News9 mentions · 7ddown 10 vs the previous week

How it compares

GPT-6 SolGPT-5.2 ProGPT-5.4 ProGPT-5.5
Input $/M$2.00$21.00$60.00$5.00
Output $/M$10.00$168.00$270.00$30.00
Context1.1M400K1.1M—
Quality9/1010/1010/1010/10
Compare side-by-sideCompare side-by-sideCompare side-by-sideCompare side-by-side

FAQ

Where does Sol sit in the GPT-6 series?
It is the cost-efficient high-end tier, above the fast GPT-6 Luna and below the flagship GPT-6 Astra. Choose Sol for demanding work that does not need the absolute maximum depth of the flagship.
What inputs does it accept?
Text, images and files, with text output. It serves a ~1.05M-token context window with up to 128K output tokens.
What capabilities does it support?
Configurable reasoning effort (reasoning_effort), function calling / tools, structured (JSON) outputs via response_format, and seeded sampling — all through the OpenAI-compatible API.
How is it priced?
Pricing is tiered by prompt size: a standard rate up to 272K input tokens, stepping up for prompts beyond that. It is materially cheaper than the flagship Astra tier. See the pricing on this page for the current rate.

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OpenAI: GPT-6 Sol•$2.00/M in•6428ms p50•via OrcaRouter
HTML <a href="https://www.orcarouter.ai/models/openai/gpt-6-sol" target="_blank"> <img src="https://www.orcarouter.ai/embed/openai/gpt-6-sol.svg" alt="OpenAI: GPT-6 Sol on OrcaRouter" /> </a>
Markdown [![OpenAI: GPT-6 Sol](https://www.orcarouter.ai/embed/openai/gpt-6-sol.svg)](https://www.orcarouter.ai/models/openai/gpt-6-sol)

Model card as data

GET /api/public/models/openai/gpt-6-solOpen
Machine-readable:/llms.txt/llms-full.txt