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  1. Models
  2. Text
  3. Reka

Reka Flash 3

Reka's 21B reasoning model for chat and coding, served directly by Reka.

  • Reasoning
  • Structured Output

Added Oct 15, 2026

Model weights

Pricing

Auto routing · per 1M tokens
Input
$0.105
Output
$0.21
Cache read
$0.00
Compare provider prices

Specifications

Context window
65.5K
Max output
65.5K

Benchmarks

Sourced from Artificial Analysis.

Intelligence Index (v4.3)

5.6

Intelligence Index (v4.3): 5.6
Better than 11% of models compared

Agentic work

T²-Bench Telecom (legacy)

Legacy fallback · Conversational AI agents in dual-control scenarios

0.0%

Better than 3% of models compared

Document reasoning

AA-LCR v1.1

Long context reasoning with updated grading

0.0%

Better than 5% of models compared

Reasoning

HLE

Humanity's Last Exam

4.4%

Better than 19% of models compared

IFBench

Instruction-following benchmark

30.4%

Better than 15% of models compared

Coding

Terminal-Bench Hard (legacy)

Legacy fallback · Agentic coding and terminal use

0.0%

Better than 5% of models compared

LiveCodeBench

Contamination-free coding benchmark

43.5%

Better than 51% of models compared

Math

AIME 2025

American Invitational Mathematics Examination 2025

33.7%

Better than 34% of models compared

AIME

American Invitational Mathematics Examination

51.0%

Better than 71% of models compared

Math-500

Diverse mathematical problem solving benchmark

89.3%

Better than 62% of models compared

Knowledge

MMLU-Pro

Professional and academic subject knowledge

66.9%

Better than 30% of models compared

Legacy benchmarks

GPQA Diamond (legacy)

Graduate-level scientific reasoning

52.9%

Better than 27% of models compared

AA-LCR (unversioned / legacy)

Long context reasoning evaluation

0.0%

Better than 5% of models compared

Last updated Nov 4, 2026

Artificial Analysis

Providers

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pqhaz's Heretic checkpoint of DeepSeek V4.1 Flash 1017, served by Sable at original mixed precision (FP8 dense/Engram and MXFP4 experts). Supports text and image input, tools, structured output, and optional reasoning. Separate from the DeAlign uncensored checkpoint.

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Uncensored DeepSeek V4.1 Flash with text and image input, optional reasoning, and tool calling. The date label is retained for compatibility; the served checkpoint can vary with availability.