token.app › Compare › GPT-5.1-Codex-Mini vs Beam 1.0 501B A23B

GPT-5.1-Codex-Mini vs Beam 1.0 501B A23B

Beam 1.0 501B A23B is 1.6× 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-5.1-Codex-MiniBeam 1.0 501B A23B
ProviderOpenAIReflection
Input $/1M$0.250$0.250
Output $/1M$2.00$1.00
Blended $/1M$0.688$0.438
Context window400K1.0M
Max output128K131K
ReleasedNov 2025Oct 2026
LicenceProprietaryOpen weights
Choose GPT-5.1-Codex-Mini if…
  • No clear advantage on the data we hold.
Choose Beam 1.0 501B A23B if…
  • Costs less per token — $0.438 vs $0.688 blended
  • Larger context window (1.0M)
  • Open weights — self-hostable
  • Newer model (released Oct 2026)
FAQ
Which is better, GPT-5.1-Codex-Mini or Beam 1.0 501B A23B?
We do not hold independently-run benchmark scores covering both GPT-5.1-Codex-Mini and Beam 1.0 501B A23B, so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT-5.1-Codex-Mini cheaper than Beam 1.0 501B A23B?
Beam 1.0 501B A23B is cheaper: $0.438 versus $0.688 per million tokens blended at 3:1 input:output. Input alone: $0.250 vs $0.250. Output alone: $2.00 vs $1.00.
What context windows do GPT-5.1-Codex-Mini and Beam 1.0 501B A23B have?
GPT-5.1-Codex-Mini: 400,000 tokens. Beam 1.0 501B A23B: 1,048,576 tokens.
Who makes GPT-5.1-Codex-Mini and Beam 1.0 501B A23B?
GPT-5.1-Codex-Mini is made by OpenAI. Beam 1.0 501B A23B is made by Reflection.
Related comparisons
GPT-5.1-Codex-Mini full details Beam 1.0 501B A23B full details GPT-5.1-Codex-Mini vs Flint (free) GPT-5.1-Codex-Mini vs MiniMax M3.1 Flash (free) GPT-5.1-Codex-Mini vs DeepSeek V4.1 Flash 1017 GPT-5.1-Codex-Mini vs Glimpse GPT-5.1-Codex-Mini vs Xing4.0 29B A4B (free) GPT-5.1-Codex-Mini vs Mercury 3