Question 1

What does this GPT-6.1 Sol vs GPT-6 Astra comparison cover?

Accepted Answer

It brings together documented inputs and outputs, token limits, deployment terms and available pricing. When both models have source-linked, verified results on a shared benchmark, those results are shown with their individual sources. The comparison is a starting point for evaluating your own workload.

Question 2

Which is cheaper: GPT-6.1 Sol or GPT-6 Astra?

Accepted Answer

GPT-6.1 Sol lists starting rates of $2.00 input and $10.00 output per 1M tokens. Standard starting rates cover prompts up to 272K input tokens. Longer prompts use 2× input/cache rates and 1.5× output rates for the full request. Fast, Ultrafast, cache writes and tool calls have separate conditions. GPT-6 Astra lists starting rates of $10.00 input and $50.00 output per 1M tokens. Standard starting rates cover prompts up to 272K input tokens. Longer prompts use 2× input/cache rates and 1.5× output rates for the full request. Fast, Ultrafast, cache writes and tool calls have separate conditions. Compare the complete request cost at your prompt length and processing tier before choosing.

Question 3

Which has the larger context window: GPT-6.1 Sol or GPT-6 Astra?

Accepted Answer

Both records list a 1.05M-token context window. An equal limit does not imply equal recall, instruction following, or long-context quality.

Question 4

Which is faster: GPT-6.1 Sol or GPT-6 Astra?

Accepted Answer

There is no matched speed measurement for both models with the same source, host, region and date. Test the same prompts at your expected concurrency and measure time to the first useful response as well as complete task time.

Question 5

What input and output types do GPT-6.1 Sol and GPT-6 Astra support?

Accepted Answer

GPT-6.1 Sol records text, image input and text output. GPT-6 Astra records text, image input and text output. “Not documented” means the current source record is incomplete; it does not prove that a modality is unsupported.

Question 6

Should I choose GPT-6.1 Sol or GPT-6 Astra?

Accepted Answer

The recorded figures alone do not establish a clear choice. Test both on the same representative examples and judge the output against your acceptance criteria. Include tool failures, retries and the time to a completed task.

Specification	GPT-6.1 Sol	GPT-6 Astra
Provider	OpenAI	OpenAI
Listed pricing route	OpenAI	OpenAI
Model family	GPT-6	GPT-6
Accepted inputs	text, image	text, image
Produced outputs	text	text
Context window	1.05M	1.05M
Max output	128K	128K
Input price / 1M	From $2.00	From $10.00
Output price / 1M	From $10.00	From $50.00
Reasoning mode	Documented	Documented
Tool calling	Documented	Documented
Image input	Documented	Documented
Audio input	Not documented	Not documented
Structured output	Documented	Documented
License	Provider terms	Provider terms

GPT-6.1 Sol vs GPT-6 Astra

GPT-6.1 Sol

GPT-6 Astra

Key differences

Pricing, limits and capabilities

Which model should you choose?

Decide using accepted tasks

Documentation and model profiles

Questions people ask

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