Instruction following · Reka AI

Reka Flash Pro on IFEval: score, rank and what it means

Reka Flash Pro scores 82.8 on IFEval, placing it #251 of 600 models in the index. The benchmark average is 78.6 and the leader is Claude Opus 4.5 Pro at 96.1.

Score
82.8
0–100 scale
Rank
#251
of 600
Percentile
58th
within the index
Benchmark avg
78.6
all models
Leader
96.1
Claude Opus 4.5 Pro
Gap to leader
13.3
points

Score distribution

The chart shows the top 10 models on IFEval, with Reka Flash Pro highlighted. Longer bars mean higher scores.

Claude Opus 4.5 Pro 96.1
Claude Opus 4.5 Reasoning 95.9
GPT-5.2 Pro 95.6
GPT-5.2 Max 95.2
GPT-5.2 Reasoning 95.0
GPT-5.1 Pro 94.8
Gemini 3 Pro Max 94.7
GPT-5.1 Reasoning 94.6
Claude Opus 4.5 Max 94.5
o4 Reasoning 94.5

Top 10 leaderboard

#ModelProviderContextInput / 1MAvg score
1 Claude Opus 4.5 Pro Anthropic 200000 $20.98 89.1
2 Claude Opus 4.5 Reasoning Anthropic 2000000 $20.91 88.2
3 GPT-5.2 Pro OpenAI 2000000 $21.32 89.6
4 GPT-5.2 Max OpenAI 1000000 $21.39 89.2
5 GPT-5.2 Reasoning OpenAI 1000000 $20.98 87.5
6 GPT-5.1 Pro OpenAI 200000 $19.77 87.8
7 Gemini 3 Pro Max Google DeepMind 2000000 $20.57 87.9
8 GPT-5.1 Reasoning OpenAI 400000 $20.27 88.3
9 Claude Opus 4.5 Max Anthropic 1000000 $20.90 87.8
10 o4 Reasoning OpenAI 1000000 $19.69 87.5

What this score means

On IFEval, Reka Flash Pro sits at #251 of 600. The leader, Claude Opus 4.5 Pro, scores 96.1, so the gap to the top is 13.3 points. The median model in this index scores 81.2, which puts Reka Flash Pro above the midpoint.

Reka AI models average 82.0 on this benchmark. Reka Flash Pro is 0.8 points above that provider line, so it is a stronger result than the average Reka AI model.

Among multimodal models, the average is 85.2. Reka Flash Pro is 2.4 points below that group. This is the more useful comparison if you are shortlisting within the same tier rather than across the whole index.

Read a 82.8 as a relative signal, not an absolute guarantee. Benchmark scores depend on prompt format, evaluation harness and contamination controls. Use this page to narrow the shortlist, then test the model on your own data.

Price context

At $10.82 per million input tokens, Reka Flash Pro is above the median input price of $4.00 across the 600 models scored on IFEval. The models immediately around it in the ranking are shown below so you can compare score and price together.

ModelProviderContextInput / 1MAvg score
Mistral Small 3 Chat Mistral AI 200000 $3.54 73.7
ERNIE 4.0 Baidu 32768 $11.37 76.7
Llama 3 Novita Novita AI 128000 $3.70 74.4
MiniMax-Text Base MiniMax 128000 $3.66 74.9
Reka Flash Pro Reka AI 200000 $10.82 75.2
Seed-OSS Instruct ByteDance 128000 $3.79 76.0
Llama 3.1 Cerebras Base Cerebras 65536 $3.36 72.7

Other benchmarks for Reka Flash Pro

BenchmarkScoreRankPercentileRelative
MMLU-Pro 76.3 298 50th
GPQA Diamond 71.2 236 61th
SWE-bench Verified 61.8 287 52th
HumanEval 78.6 278 54th
MATH-500 79.2 229 62th
AIME 2025 68.4 289 52th
LiveCodeBench 69.6 201 67th
TruthfulQA 77.8 260 57th
HellaSwag 86.1 216 64th
MMMU 75.0 164 73th
Arena Elo 1396.5 218 64th

FAQ

What score does Reka Flash Pro get on IFEval?

Reka Flash Pro scores 82.8 on IFEval in this index. The benchmark average is 78.6 and the top score is 96.1.

How does Reka Flash Pro rank on IFEval?

It ranks #251 of 600 models, in the 58th percentile. The leader is Claude Opus 4.5 Pro at 96.1.

Is Reka Flash Pro good at IFEval?

Yes, relative to the index: it is above the median and inside the top half of scores. The result should be read alongside its price and context window.

How is the IFEval score calculated?

IFEval is a instruction following benchmark. Scores in this index are modelled estimates on a 0–100 scale (or Elo for Arena), derived from capability tier and benchmark difficulty. They are not official leaderboard results.

What does Reka Flash Pro cost?

Reka Flash Pro costs $10.82 per million input tokens and $52.20 per million output tokens.

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