FLUX.2 DevvsFLUX.2 Klein 4B

FLUX.2 Dev leads the overall Podium Score by 3.9 points (90.4 vs 86.5).Category wins: FLUX.2 Dev 5 — 0 FLUX.2 Klein 4B.FLUX.2 Klein 4B is the cheaper pick ($0.01/M vs $0.03/M per 1M output tokens). FLUX.2 Klein 4B is faster (90 t/s vs 28 t/s).

Open in Compare Tool →View FLUX.2 DevView FLUX.2 Klein 4B
FLUX.2 DevDrag slider or hover to compareFLUX.2 Klein 4B
FLUX.2 Klein 4B
86.5
Coding: 0.0 · Speed: 90 t/s
Output Price: $0.01/M
FLUX.2 Dev
90.4
Coding: 0.0 · Speed: 28 t/s
Output Price: $0.03/M
Quick VerdictAggregated 2026 Benchmark Analysis

FLUX.2 Dev is rated higher overall with a Podium Score of 90.4 (vs 86.5 for FLUX.2 Klein 4B). In head-to-head domain evaluations, FLUX.2 Dev outperforms in 5 of 7 benchmark categories.

Coding & Engineering
FLUX.2 Dev (0.0)
Inference Speed
FLUX.2 Klein 4B (90 t/s)
Cost Efficiency
FLUX.2 Klein 4B ($0.01/M)
API Price / 1M (in · out)
FLUX.2 Dev $0.03/M · $0.03/M — FLUX.2 Klein 4B $0.01/M · $0.01/M

Choose FLUX.2 Dev for vision and multimodal apps, and FLUX.2 Klein 4B for cost-sensitive workloads.

MetricFLUX.2 DevFLUX.2 Klein 4B
Podium Score90.4 ▲86.5
Arena Elo1440 ▲1380
Intelligence Index90.0 ▲87.0
Coding0.00.0
Math0.00.0
Reasoning42.0 ▲25.0
Agentic28.0 ▲18.0
Knowledge60.0 ▲42.0
Multimodal98.5 ▲90.0
Long-context55.0 ▲35.0
Output speed28 t/s90 t/s ▲
Output price$0.03/M$0.01/M ▲
Context window128K ▲32K
Scores aggregated from five independent leaderboards. See Methodology. More head-to-heads: FLUX.2 Dev vs Claude Mythos · FLUX.2 Dev vs Claude 5.5 Sonnet · FLUX.2 Dev vs Kimi K3.1 Pro · FLUX.2 Dev vs Eleven Multilingual v3
0 / 4
Compare Now →