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Reflection

Beam 1.0

  • Released
  • Open weights
  • Apache 2.0
Intelligence Index

Reasoning setting

30.3#33 of 83measured models
Measured · Artificial Analysis v4.3.2
API price from
$0.25 in / $1.00 out / 1M tokOpenRouter · Nebius · FP8
Context window
1.05M tok

Performance profile

CodingRank #37 of 94
48.5%
SciCode
Cost efficiencyRank #35 of 67
53.6pts / $
Intelligence ÷ eval cost

Capabilities

Context window

Modalities

Measured setting

Integration

Reasoning trade-offs

Source (opens in a new tab)
Intelligence Index v4.3.2
Beam 1.0
Cost per task (USD) · log scale
Beam 1.0Reasoning
Intelligence Index
30.3
Cost / task
$0.5657
Evaluation time
1.4m

Pricing & access

API route
API
Tier & contextStandard

USD per 1M tokens

Input
$1.30
Output
$4.30
Cached input
$0.13

Run locally

Original download
1,002.7 GB
App memory
Unverified
Documented software
vLLM / SGLangSetup guide (opens in a new tab)

Benchmarks

Full leaderboardSource (opens in a new tab)

Humanity’s Last Exam

Frontier reasoning

Beam 1.0 · Reasoning#38 of 126

  1. 1Claude Opus 5.5Max61.4%
  2. 2Claude Fable 5.1Max59.1%
  3. 3Gemini 4 ArgonHigh57.1%
  4. 35MiMo-V2.6-FlashReasoning35.1%
  5. 36Mistral Large 4Reasoning35.0%
  6. 36Kimi K2.7 CodeReasoning35.0%
  7. 38Beam 1.0Reasoning34.7%
  8. 39DeepSeek V4 Flash VisionMax34.5%
  9. 40Apodex 1.1Reasoning34.1%
  10. 41Qwen3.8-27BExtra high33.9%

Peers use their best measured result on this benchmark.

Alternatives

Each model at its highest-scoring measured setting · Intelligence Index v4.3.2 and its evaluation cost per task.