FullSeam vs Kalshi
Which Finance AI tool is better in 2026?
FullSeam
AI agents for corporate accounting teams
Kalshi
The first US-regulated prediction market exchange
Side-by-side
Kalshi is the more established option (raised $2.5B); pricing is comparable on both sides.
| Metric | FullSeam | Kalshi |
|---|---|---|
| Taglinei | AI agents for corporate accounting teams | The first US-regulated prediction market exchange |
| Foundedi | 2026 | 2018🏆 |
| HQi | — | New York, US |
| Employeesi | 1-10 | 201-500🏆 |
| Neuron scorei | 44 | 82🏆 |
| Total fundingi | $500K | $2.5B🏆 |
| Latest roundi | Seed · Jan 2026 | Series F · May 2026 |
| Valuationi | — | $22B🏆 |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed |
| Free plani | ✗ | ✓ |
| Free triali | ✗ | ✓ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Pricing not listed | Free |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for FullSeam and Kalshi.
| Capability | FullSeam | Kalshi |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✓ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of FullSeam
- Newer company (2026)
🔵 Strengths of Kalshi
- Has raised more capital ($2.5B vs $500K)
- Higher Neuron score (82 vs 44)
- Offers a free plan
- Offers a free trial
Which should you choose?
Choose Kalshi if price matters most — it starts at Free, which is friendlier for teams watching burn. Both AI Finance tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Kalshi if you want the most established option — it has raised $2.5B, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
FullSeam vs Kalshi — which is better?
It depends on your priority. FullSeam is the leaner option; Kalshi has broader feature depth. See the side-by-side table above.
Is FullSeam cheaper than Kalshi?
No — Kalshi's cheapest paid plan is Free, while FullSeam's is Pricing not listed.
Do FullSeam and Kalshi offer free plans?
FullSeam: Paid only. Kalshi: Yes, has a free plan.
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