token.app › Compare › Kimi K3 vs GPT-5.4
Kimi K3 vs GPT-5.4
GPT-5.4 leads on 5 of 5 shared benchmarks. GPT-5.4 is 1.1× cheaper per token on a blended 3:1 basis. GPT-5.4 accepts the larger context window (1.1M).
Head to head
Blended price uses a 3:1 input:output mix
| Kimi K3 | GPT-5.4 | |
|---|---|---|
| Provider | Moonshot AI | OpenAI |
| Input $/1M | $3.00 | $2.50 |
| Output $/1M | $15.00 | $15.00 |
| Blended $/1M | $6.00 | $5.63 |
| Context window | 1.0M | 1.1M |
| Max output | — | 128K |
| Released | Jul 2026 | Mar 2026 |
| Licence | Open weights | Proprietary |
| GPQA Diamond | 93.1% | 93.3% |
| FrontierMath T1–3 | 72.2% | 78.6% |
| FrontierMath T4 | 39.0% | 49.0% |
| SimpleQA Verified | 42.7% | 44.8% |
| OTIS Mock AIME | 97.2% | 97.8% |
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose Kimi K3 if…
- Open weights — self-hostable
- Newer model (released Jul 2026)
Choose GPT-5.4 if…
- Costs less per token — $5.63 vs $6.00 blended
- Higher GPQA Diamond (93.3% vs 93.1%)
- Higher FrontierMath T1–3 (78.6% vs 72.2%)
- Higher FrontierMath T4 (49.0% vs 39.0%)
- Higher SimpleQA Verified (44.8% vs 42.7%)
- Larger context window (1.1M)
FAQ
Which is better, Kimi K3 or GPT-5.4?
Across the 5 benchmarks both models have independently-run scores for, Kimi K3 leads on 0 and GPT-5.4 leads on 5. Benchmarks are one input — price and context window are on this page too.
Is Kimi K3 cheaper than GPT-5.4?
GPT-5.4 is cheaper: $5.63 versus $6.00 per million tokens blended at 3:1 input:output. Input alone: $3.00 vs $2.50. Output alone: $15.00 vs $15.00.
What context windows do Kimi K3 and GPT-5.4 have?
Kimi K3: 1,048,576 tokens. GPT-5.4: 1,050,000 tokens.
Who makes Kimi K3 and GPT-5.4?
Kimi K3 is made by Moonshot AI. GPT-5.4 is made by OpenAI.