OpenAI vs StepFun
Which Developer Tools AI tool is better in 2026?
OpenAI
Creator of ChatGPT, GPT-4, and the leading frontier AI lab.
StepFun
StepFun offers a suite of AI tools including knowledge base Q&A, image creation, and advanced multimodal reasoning models.
Side-by-side
OpenAI leads on both fronts — more capital raised ($193.3B) and a lower entry price than StepFun.
| Metric | OpenAI | StepFun |
|---|---|---|
| Taglinei | Creator of ChatGPT, GPT-4, and the leading frontier AI lab. | StepFun offers a suite of AI tools including knowledge base Q&A, image creation, and advanced multimodal reasoning models. |
| Foundedi | 2015🏆 | — |
| HQi | San Francisco, US | CN |
| Employeesi | 1001-5000🏆 | — |
| Neuron scorei | 99🏆 | 60 |
| Total fundingi | $193.3B🏆 | Undisclosed |
| Latest roundi | Series E · Mar 2026 | — |
| Valuationi | $852B🏆 | — |
| Cheapest paid plani | ChatGPT Plus · $20/mo🏆 | — |
| Free plani | ✓ Free | ✗ |
| Free triali | ✗ | ✗ |
| Top tier pricei | ChatGPT Team · $25/mo | Step Plan · Contact sales |
| Pricing summaryi | 4 published plans | 1 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for OpenAI and StepFun.
| Capability | OpenAI | StepFun |
|---|---|---|
| MCP support | ✓ | ✗ |
| Public API | ✓ | ✗ |
| Webhooks | ✓ | ✗ |
| OAuth 2.0 | ✓ | ✗ |
| SDK languages | 6 (Python, Node.js, TypeScript, Go…) | — |
| Free plan | ✓ | ✗ |
| Free trial | ✗ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✓ | ✗ |
🟢 Strengths of OpenAI
- Has raised more capital ($193.3B vs Undisclosed)
- Higher Neuron score (99 vs 60)
- Offers a free plan
- Lower starting price ($20/mo)
🔵 Strengths of StepFun
- Strong in AI Developer Tools
Which should you choose?
Choose OpenAI if price matters most — it starts at Free · From $20/mo, 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 OpenAI if you want the most established option — it has raised $193.3B, 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.
💸 Deals
Free daily tokens via OpenAI data-sharing tier
Eligible OpenAI API tiers can earn free daily tokens on GPT-4.1, GPT-4o, and other models by opting in to share prompts and completions for model improvement.
Terms: Opt-in required. Token allotment varies by tier.
Frequently asked questions
OpenAI vs StepFun — which is better?
It depends on your priority. OpenAI has raised more capital and is the more established option; StepFun has broader feature depth. See the side-by-side table above.
Is OpenAI cheaper than StepFun?
Yes — OpenAI's cheapest paid plan is ChatGPT Plus · $20/mo, while StepFun's is Freemium.
Do OpenAI and StepFun offer free plans?
OpenAI: Yes, has a free plan. StepFun: Paid only.
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Contextual paths to related AI startups, deals and rankings.