Step-3
NanoGPT
Step-3 by NanoGPT costs $0.25 per 1M input tokens and $0.65 per 1M output tokens, with a 66K-token context window.
Pricing
Input (per 1M tokens)
$0.25
Output (per 1M tokens)
$0.65
Cached input (per 1M)
—
Specifications
- Provider
- NanoGPT
- Context window
- 66K tokens
- Parameters
- —
- Released
- Jul 2025
- Open weights
- No
- Frontier model
- No
Benchmarks
- LMArena Vision Elo
- 1176.5
Compare Step-3 with…
FAQ
How much does Step-3 cost?
Step-3 is priced at $0.25 per 1M input tokens and $0.65 per 1M output tokens. Output tokens cost more than input.
What is Step-3's context window?
Step-3 supports a context window of 66K tokens — the maximum prompt plus response length it can handle in a single request.
Is Step-3 open weight?
No — Step-3 is a closed/proprietary model accessed via API.
Data as of 2026-06-28. Source: models.dev (open). Pricing is per 1M tokens (USD); confirm with the provider before production use.