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GPT-6.1 Sol

OpenAI · Reasoning · 1.05M context · released Sep 29, 2026 · checked 2h ago

Ways to buy 6

Way to buyIn / out per 1M
OpenAI
flex, cheapest · cached $0.05
$1 / $5-50% vs list
OpenAI API
The lab's own API · cached $0.1
$2 / $10List price
Azure AI Foundry
Default region · cached $0.1
$2 / $10Same as list
Azure AI Foundry
eu · cached $0.11
$2.2 / $11+10% vs list
Azure AI Foundry
us · cached $0.11
$2.2 / $11+10% vs list
OpenAI
fast · cached $0.2
$4 / $20+100% vs list

USD per 1M tokens. Regions are separate routes.

Through a gateway

Your own numbers

100M input and 20M output tokens a month: $400.00 direct.

A dash: not on that gateway's own model list. No published token fee: Martian Gateway, Portkey, TrueFoundry AI Gateway.

Related models

In / out per 1M
GPT-6.1 Sol Pro
OpenAI · 1.05MCheapest: $2 on OpenAI (flex)
$2 / $10
GPT-6 Luna
OpenAI · 1.05MCheapest: $0.1 on OpenAI (flex)
$0.1 / $0.5
GPT-6 Luna Pro
OpenAI · 1.05MCheapest: $0.1 on OpenAI (flex)
$0.1 / $0.5
GPT-6 Sol
OpenAI · 1.05MCheapest: $2 on OpenAI (flex)
$2 / $10
Claude Opus 5.5
Anthropic · 1M
$4 / $20
Claude Sonnet 5.5
Anthropic · 1M
$2 / $10
Muse Spark 1.1
Meta · 1M
$1.25 / $4.25
Gemini 3.1 Pro Preview
Google · 1MCheapest: $2.25 on Google Vertex AI (global-flex)
$2 / $12

About GPT-6.1 Sol

GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series.

Takes files, image, text in and returns text. First listed Oct 2, 2026. Up to 128K output tokens. Blended price $4 per 1M tokens at 3 input to 1 output. Overall score 23 on leadersboard.fru.dev (rank 6). Model id gpt-6-1-sol.

Price history

$3$10Oct 2, 2026Output $10Input $2

List price since Oct 2, 2026, from daily reads of the OpenRouter catalog.

Questions

How much does GPT-6.1 Sol cost?

$2 per million input tokens and $10 per million output tokens, with cached input at $0.1.

What is the context window of GPT-6.1 Sol?

1.05M tokens, with up to 128K tokens of output.

Where is GPT-6.1 Sol cheapest?

Of 6 routes tracked, OpenAI is cheapest at $1 input and $5 output per million tokens.

Price changes by email

Thursdays, only in weeks when an LLM API list price changed.

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