Kimi K3.1 ProvsLTX-2.3 Fast

Kimi K3.1 Pro leads the overall Podium Score by 8.0 points (94.2 vs 86.2).Category wins: Kimi K3.1 Pro 6 — 0 LTX-2.3 Fast.LTX-2.3 Fast is the cheaper pick ($0.05/M vs $20/M per 1M output tokens). LTX-2.3 Fast is faster (60 t/s vs 45 t/s).

Open in Compare Tool →View Kimi K3.1 ProView LTX-2.3 Fast
Kimi K3.1 ProDrag slider or hover to compareLTX-2.3 Fast
LTX-2.3 Fast
86.2
Coding: 0.0 · Speed: 60 t/s
Output Price: $0.05/M
Kimi K3.1 Pro
94.2
Coding: 72.0 · Speed: 45 t/s
Output Price: $20/M
Quick VerdictAggregated 2026 Benchmark Analysis

Kimi K3.1 Pro is rated higher overall with a Podium Score of 94.2 (vs 86.2 for LTX-2.3 Fast). In head-to-head domain evaluations, Kimi K3.1 Pro outperforms in 6 of 7 benchmark categories.

Coding & Engineering
Kimi K3.1 Pro (72.0)
Inference Speed
LTX-2.3 Fast (60 t/s)
Cost Efficiency
LTX-2.3 Fast ($0.05/M)
API Price / 1M (in · out)
Kimi K3.1 Pro $4/M · $20/M — LTX-2.3 Fast $0.05/M · $0.05/M

Choose Kimi K3.1 Pro for long documents and large codebases, and LTX-2.3 Fast for cost-sensitive workloads.

MetricKimi K3.1 ProLTX-2.3 Fast
Podium Score94.2 ▲86.2
Arena Elo1490 ▲1385
Intelligence Index68.086.0 ▲
Coding72.0 ▲0.0
Math95.0 ▲0.0
Reasoning98.0 ▲30.0
Agentic82.0 ▲20.0
Knowledge45.045.0
Multimodal96.0 ▲93.0
Long-context100.0 ▲35.0
Output speed45 t/s60 t/s ▲
Output price$20/M$0.05/M ▲
Context window1000K ▲64K
Scores aggregated from five independent leaderboards. See Methodology. More head-to-heads: Kimi K3.1 Pro vs Claude Mythos · Kimi K3.1 Pro vs Claude 5.5 Sonnet · Kimi K3.1 Pro vs Eleven Multilingual v3 · Kimi K3.1 Pro vs FLUX.2 Pro
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