token.app › Compare › o3 Pro vs Beam 1.0 501B A23B
o3 Pro vs Beam 1.0 501B A23B
Beam 1.0 501B A23B is 80× 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
| o3 Pro | Beam 1.0 501B A23B | |
|---|---|---|
| Provider | OpenAI | Reflection |
| Input $/1M | $20.00 | $0.250 |
| Output $/1M | $80.00 | $1.00 |
| Blended $/1M | $35.00 | $0.438 |
| Context window | 200K | 1.0M |
| Max output | 100K | 131K |
| Released | Jun 2025 | Oct 2026 |
| Licence | Proprietary | Open weights |
Choose o3 Pro if…
- No clear advantage on the data we hold.
Choose Beam 1.0 501B A23B if…
- Costs less per token — $0.438 vs $35.00 blended
- Larger context window (1.0M)
- Open weights — self-hostable
- Newer model (released Oct 2026)
FAQ
Which is better, o3 Pro or Beam 1.0 501B A23B?
We do not hold independently-run benchmark scores covering both o3 Pro and Beam 1.0 501B A23B, so we make no quality claim. Their pricing and specifications are compared on this page.
Is o3 Pro cheaper than Beam 1.0 501B A23B?
Beam 1.0 501B A23B is cheaper: $0.438 versus $35.00 per million tokens blended at 3:1 input:output. Input alone: $20.00 vs $0.250. Output alone: $80.00 vs $1.00.
What context windows do o3 Pro and Beam 1.0 501B A23B have?
o3 Pro: 200,000 tokens. Beam 1.0 501B A23B: 1,048,576 tokens.
Who makes o3 Pro and Beam 1.0 501B A23B?
o3 Pro is made by OpenAI. Beam 1.0 501B A23B is made by Reflection.