token.app › Compare › GPT-5 Nano vs Beam 1.0 501B A23B
GPT-5 Nano vs Beam 1.0 501B A23B
GPT-5 Nano is 3.2× cheaper per token on a blended 3:1 basis. Beam 1.0 501B A23B accepts the larger context window (1.0M).
Head to head
Blended price uses a 3:1 input:output mix
| GPT-5 Nano | Beam 1.0 501B A23B | |
|---|---|---|
| Provider | OpenAI | Reflection |
| Input $/1M | $0.050 | $0.250 |
| Output $/1M | $0.400 | $1.00 |
| Blended $/1M | $0.138 | $0.438 |
| Context window | 400K | 1.0M |
| Max output | 128K | 131K |
| Released | Aug 2025 | Oct 2026 |
| Licence | Proprietary | Open weights |
Choose GPT-5 Nano if…
- Costs less per token — $0.138 vs $0.438 blended
Choose Beam 1.0 501B A23B if…
- Larger context window (1.0M)
- Open weights — self-hostable
- Newer model (released Oct 2026)
FAQ
Which is better, GPT-5 Nano or Beam 1.0 501B A23B?
We do not hold independently-run benchmark scores covering both GPT-5 Nano and Beam 1.0 501B A23B, so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT-5 Nano cheaper than Beam 1.0 501B A23B?
GPT-5 Nano is cheaper: $0.138 versus $0.438 per million tokens blended at 3:1 input:output. Input alone: $0.050 vs $0.250. Output alone: $0.400 vs $1.00.
What context windows do GPT-5 Nano and Beam 1.0 501B A23B have?
GPT-5 Nano: 400,000 tokens. Beam 1.0 501B A23B: 1,048,576 tokens.
Who makes GPT-5 Nano and Beam 1.0 501B A23B?
GPT-5 Nano is made by OpenAI. Beam 1.0 501B A23B is made by Reflection.