Question 1

Which is better, Gemini 3.1 Pro Preview Custom Tools or Beam 1.0 501B A23B?

Accepted Answer

We do not hold independently-run benchmark scores covering both Gemini 3.1 Pro Preview Custom Tools and Beam 1.0 501B A23B, so we make no quality claim. Their pricing and specifications are compared on this page.

Question 2

Is Gemini 3.1 Pro Preview Custom Tools cheaper than Beam 1.0 501B A23B?

Accepted Answer

Beam 1.0 501B A23B is cheaper: $0.438 versus $4.50 per million tokens blended at 3:1 input:output. Input alone: $2.00 vs $0.250. Output alone: $12.00 vs $1.00.

Question 3

What context windows do Gemini 3.1 Pro Preview Custom Tools and Beam 1.0 501B A23B have?

Accepted Answer

Gemini 3.1 Pro Preview Custom Tools: 1,048,576 tokens. Beam 1.0 501B A23B: 1,048,576 tokens.

Question 4

Who makes Gemini 3.1 Pro Preview Custom Tools and Beam 1.0 501B A23B?

Accepted Answer

Gemini 3.1 Pro Preview Custom Tools is made by Google. Beam 1.0 501B A23B is made by Reflection.

	Gemini 3.1 Pro Preview Custom Tools	Beam 1.0 501B A23B
Provider	Google	Reflection
Input $/1M	$2.00	$0.250
Output $/1M	$12.00	$1.00
Blended $/1M	$4.50	$0.438
Context window	1.0M	1.0M
Max output	66K	131K
Released	Feb 2026	Oct 2026
Licence	Proprietary	Open weights

Gemini 3.1 Pro Preview Custom Tools vs Beam 1.0 501B A23B