Spur vs Thunder Code
Which Developer Tools AI tool is better in 2026?
Spur
AI QA engineer that tests your website like a real user
Thunder Code
AI-native software testing that anyone can run from the browser
Side-by-side
Thunder Code is the more established option (raised $9M); pricing is comparable on both sides.
| Metric | Spur | Thunder Code |
|---|---|---|
| Taglinei | AI QA engineer that tests your website like a real user | AI-native software testing that anyone can run from the browser |
| Foundedi | 2024🏆 | 2025 |
| HQi | San Francisco, US | Paris, FR |
| Employeesi | 1-10 | 11-50🏆 |
| Neuron scorei | 58 | 63🏆 |
| Total fundingi | $4.5M | $9M🏆 |
| Latest roundi | Seed · Apr 2025 | Seed · Jun 2025 |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed |
| Free plani | ✓ | ✓ |
| Free triali | ✓ | ✓ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Free | Free |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Spur and Thunder Code.
| Capability | Spur | Thunder Code |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✓ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Spur
- More mature (2024)
🔵 Strengths of Thunder Code
- Has raised more capital ($9M vs $4.5M)
- Higher Neuron score (63 vs 58)
- Newer company (2025)
Which should you choose?
Choose Thunder Code if price matters most — it starts at Free, which is friendlier for teams watching burn. Both AI Developer Tools tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Thunder Code if you want the most established option — it has raised $9M, 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
Spur vs Thunder Code — which is better?
It depends on your priority. Spur is the leaner option; Thunder Code has broader feature depth. See the side-by-side table above.
Is Spur cheaper than Thunder Code?
No — Thunder Code's cheapest paid plan is Free, while Spur's is Free.
Do Spur and Thunder Code offer free plans?
Spur: Yes, has a free plan. Thunder Code: Yes, has a free plan.
Explore more AI Developer Tools tools
Contextual paths to related AI startups, deals and rankings.