RekaReka Flash 21B
Reka Flash 21B is a Reka proprietary model. It is not yet ranked: 4 independent results so far, and the index needs at least five across two categories. Last measured 22 Oct 2026.
- Blended price
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- Output speed
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- First answer
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- Context
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- Full answer
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- Cost per run
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- Released
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- date not published by our sources
- Reasoning37
- Coding38
- Maths37
- Human preference37
Benchmark results
See all LLM benchmarks. One column per reasoning effort. Rank is among every configuration of every model on that benchmark. Hover a score for the run it came from.
Reasoning
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| Arena Hard Prompts | 1236#298 | Arena (LMArena) |
Coding
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| Arena Coding | 1278#289 | Arena (LMArena) |
Maths
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| Arena Maths | 1212#288 | Arena (LMArena) |
Instruction following
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| Arena Instruction Followingnot in index | 1202#302 | Arena (LMArena) |
Human preference
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| Arena Text | 1234#296 | Arena (LMArena) | |
| Arena Creative Writingnot in index | 1181#305 | Arena (LMArena) | |
| Arena Multi-turnnot in index | 1206#295 | Arena (LMArena) | |
| Arena Longer Queriesnot in index | 1219#304 | Arena (LMArena) |
More from Reka
See also
Questions people ask
- Why does Reka Flash 21B have no BenchLeader Index score?
- The index needs at least five independent results across at least two categories; as of 25 Oct 2026 Reka Flash 21B has 4 that count. Launch-post scores are never used, so it is ranked once independent publishers have measured it.
Data as of 25 Oct 2026. Compare with another model.
Cite as: BenchLeader, “Reka Flash 21B: benchmarks, pricing, speed and rank”, data as of 25 Oct 2026, https://www.benchleader.com/models/reka-flash-21b.