SX Bet vs Smarkets (2026)
Short answer: SX Bet scores clearly higher overall (51 vs 31). Smarkets is the better pick for developers building trading tools on the Smarkets betting exchange with the streaming API and Python client.
From public data checked . How we know
Choose SX Bet if you…
Betting exchange
- ✓ want to start on a free tier
- ✓ want WebSocket push instead of polling
- ✓ value a large open-source ecosystem of wrappers and examples
- ✓ care most about what developers report in practice
What developers say
Crypto sports betting exchange with a free public REST/WebSocket API. Developers use it to build market-making, iceberg-order and arbitrage bots, often AI-assisted, and aggregators route across it alongside Polymarket and Kalshi. Much tutorial content comes from the vendor. The official JS SDK is deprecated; little independent opinion on reliability or data quality.
Choose Smarkets if you…
Betting exchange
Best for: Developers building trading tools on the Smarkets betting exchange with the streaming API and Python client.
What developers say
UK betting exchange with a free streaming/REST API, mentioned as a Betfair alternative for arbitrage and trading bots, and cited as a lay-price source in odds aggregators. Evidence is mostly old: a 2010 launch, and a metaforecast issue about missing contracts in market data. Little current opinion.
Side by side
| SX Bet | Smarkets | |
|---|---|---|
| SportDex Score | 51/100 (#47) | 31/100 (#140) |
| Popularity | 36 | 29 |
| Community & reliability | 52 | Not enough data |
| Transparency | 65 | 15 |
| Developer experience | 60 | 49 |
| Type | Betting exchange | Betting exchange |
| Starting price | Free tier | Price not public |
| Free tier | Yes | Not disclosed |
| Free trial | Not stated | Not stated |
| Sports | Multi-sport (40+) | Multi-sport (40+), Football (soccer), Horse racing |
| Data | Trading & risk, Odds, Live scores | Trading & risk, Odds |
| Delivery | Streaming (WebSocket) | Streaming (Push feed) |
| Protocols | REST, WebSocket | Push feed |
| Live / in-play | Not disclosed | Not disclosed |
| Commercial use | Commercial: not disclosed | Commercial: not disclosed |
| Betting products | Betting: not disclosed | Betting: not disclosed |
| Documentation | Docs | Docs |
| Developer discussions | 4 | 4 |
| GitHub repos | 77 | 38 |
| Community tone | Neutral | Too little discussion |
Empty fields mean the provider does not say, not that the feature is missing.
Quick answers
- Is SX Bet or Smarkets better?
- SX Bet scores clearly higher overall (51 vs 31). Smarkets is the better pick for developers building trading tools on the Smarkets betting exchange with the streaming API and Python client.
- Which is cheaper, SX Bet or Smarkets?
- SX Bet: Free tier. Smarkets: Price not public. Entry plans differ in limits and coverage, so compare what each plan includes.
- Do SX Bet and Smarkets have a free tier?
- SX Bet: yes. Smarkets: not disclosed.