token.app › Compare › Claude Sonnet 5.5 vs Xing4.0 29B A4B (free)
Claude Sonnet 5.5 vs Xing4.0 29B A4B (free)
Xing4.0 29B A4B (free) is free to use, against $4.00 per million tokens. Claude Sonnet 5.5 accepts the larger context window (1M).
Head to head
Blended price uses a 3:1 input:output mix
| Claude Sonnet 5.5 | Xing4.0 29B A4B (free) | |
|---|---|---|
| Provider | Anthropic | Xingchen agi |
| Input $/1M | $2.00 | Free |
| Output $/1M | $10.00 | Free |
| Blended $/1M | $4.00 | Free |
| Context window | 1M | 262K |
| Max output | 128K | 236K |
| Released | Sep 2026 | Oct 2026 |
| Licence | Proprietary | Open weights |
Choose Claude Sonnet 5.5 if…
- Larger context window (1M)
Choose Xing4.0 29B A4B (free) if…
- Costs less per token — Free vs $4.00 blended
- Open weights — self-hostable
- Newer model (released Oct 2026)
FAQ
Which is better, Claude Sonnet 5.5 or Xing4.0 29B A4B (free)?
We do not hold independently-run benchmark scores covering both Claude Sonnet 5.5 and Xing4.0 29B A4B (free), so we make no quality claim. Their pricing and specifications are compared on this page.
Is Claude Sonnet 5.5 cheaper than Xing4.0 29B A4B (free)?
Xing4.0 29B A4B (free) is cheaper: Free versus $4.00 per million tokens blended at 3:1 input:output. Input alone: $2.00 vs Free. Output alone: $10.00 vs Free.
What context windows do Claude Sonnet 5.5 and Xing4.0 29B A4B (free) have?
Claude Sonnet 5.5: 1,000,000 tokens. Xing4.0 29B A4B (free): 262,144 tokens.
Who makes Claude Sonnet 5.5 and Xing4.0 29B A4B (free)?
Claude Sonnet 5.5 is made by Anthropic. Xing4.0 29B A4B (free) is made by Xingchen agi.
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