token.app › Compare › Gemini 3.1 Pro Preview Custom Tools vs Xing4.0 29B A4B (free)

Gemini 3.1 Pro Preview Custom Tools vs Xing4.0 29B A4B (free)

Xing4.0 29B A4B (free) is free to use, against $4.50 per million tokens. Gemini 3.1 Pro Preview Custom Tools accepts the larger context window (1.0M).

Head to head
Blended price uses a 3:1 input:output mix
Gemini 3.1 Pro Preview Custom ToolsXing4.0 29B A4B (free)
ProviderGoogleXingchen agi
Input $/1M$2.00Free
Output $/1M$12.00Free
Blended $/1M$4.50Free
Context window1.0M262K
Max output66K236K
ReleasedFeb 2026Oct 2026
LicenceProprietaryOpen weights
Choose Gemini 3.1 Pro Preview Custom Tools if…
  • Larger context window (1.0M)
Choose Xing4.0 29B A4B (free) if…
  • Costs less per token — Free vs $4.50 blended
  • Open weights — self-hostable
  • Newer model (released Oct 2026)
FAQ
Which is better, Gemini 3.1 Pro Preview Custom Tools or Xing4.0 29B A4B (free)?
We do not hold independently-run benchmark scores covering both Gemini 3.1 Pro Preview Custom Tools and Xing4.0 29B A4B (free), so we make no quality claim. Their pricing and specifications are compared on this page.
Is Gemini 3.1 Pro Preview Custom Tools cheaper than Xing4.0 29B A4B (free)?
Xing4.0 29B A4B (free) is cheaper: Free versus $4.50 per million tokens blended at 3:1 input:output. Input alone: $2.00 vs Free. Output alone: $12.00 vs Free.
What context windows do Gemini 3.1 Pro Preview Custom Tools and Xing4.0 29B A4B (free) have?
Gemini 3.1 Pro Preview Custom Tools: 1,048,576 tokens. Xing4.0 29B A4B (free): 262,144 tokens.
Who makes Gemini 3.1 Pro Preview Custom Tools and Xing4.0 29B A4B (free)?
Gemini 3.1 Pro Preview Custom Tools is made by Google. Xing4.0 29B A4B (free) is made by Xingchen agi.
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