token.app › Compare › GPT-5.1 (batch) vs Xing4.0 29B A4B (free)
GPT-5.1 (batch) vs Xing4.0 29B A4B (free)
Xing4.0 29B A4B (free) is free to use, against $1.72 per million tokens. GPT-5.1 (batch) accepts the larger context window (400K).
Head to head
Blended price uses a 3:1 input:output mix
| GPT-5.1 (batch) | Xing4.0 29B A4B (free) | |
|---|---|---|
| Provider | OpenAI | Xingchen agi |
| Input $/1M | $0.625 | Free |
| Output $/1M | $5.00 | Free |
| Blended $/1M | $1.72 | Free |
| Context window | 400K | 262K |
| Max output | 128K | 236K |
| Released | Nov 2025 | Oct 2026 |
| Licence | Proprietary | Open weights |
Choose GPT-5.1 (batch) if…
- Larger context window (400K)
Choose Xing4.0 29B A4B (free) if…
- Costs less per token — Free vs $1.72 blended
- Open weights — self-hostable
- Newer model (released Oct 2026)
FAQ
Which is better, GPT-5.1 (batch) or Xing4.0 29B A4B (free)?
We do not hold independently-run benchmark scores covering both GPT-5.1 (batch) and Xing4.0 29B A4B (free), so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT-5.1 (batch) cheaper than Xing4.0 29B A4B (free)?
Xing4.0 29B A4B (free) is cheaper: Free versus $1.72 per million tokens blended at 3:1 input:output. Input alone: $0.625 vs Free. Output alone: $5.00 vs Free.
What context windows do GPT-5.1 (batch) and Xing4.0 29B A4B (free) have?
GPT-5.1 (batch): 400,000 tokens. Xing4.0 29B A4B (free): 262,144 tokens.
Who makes GPT-5.1 (batch) and Xing4.0 29B A4B (free)?
GPT-5.1 (batch) is made by OpenAI. Xing4.0 29B A4B (free) is made by Xingchen agi.