GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...
Model details →OpenAI: GPT-5 Nano (batch) vs Upstage: Solar Mini 4
OpenAI: GPT-5 Nano (batch) wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
Solar Mini 4 is Upstage's compact, cost-efficient language model, a 35B-parameter mixture-of-experts with 3B active parameters and a 524K context window. It is built for agentic use cases where response...
Model details →Side-by-side comparison
| Capability | OpenAI: GPT-5 Nano (batch) | Upstage: Solar Mini 4 | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 400K | 524K | 🏆 Upstage: Solar Mini 4 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.03 | $0.05 | 🏆 OpenAI: GPT-5 Nano (batch) |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.20 | $0.20 | Tie |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | — | 🏆 OpenAI: GPT-5 Nano (batch) |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is OpenAI: GPT-5 Nano (batch) better than Upstage: Solar Mini 4?
OpenAI: GPT-5 Nano (batch) wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between OpenAI: GPT-5 Nano (batch) and Upstage: Solar Mini 4?
Input: $0.03 vs $0.05 per 1M tokens. Output: $0.20 vs $0.20 per 1M tokens.
What context windows do OpenAI: GPT-5 Nano (batch) and Upstage: Solar Mini 4 support?
OpenAI: GPT-5 Nano (batch) supports up to 400K tokens. Upstage: Solar Mini 4 supports up to 524K tokens.
Do both OpenAI: GPT-5 Nano (batch) and Upstage: Solar Mini 4 support tool calling?
OpenAI: GPT-5 Nano (batch): yes. Upstage: Solar Mini 4: yes.