token.app › Compare › GPT-5.6 Terra vs Kimi K3
GPT-5.6 Terra vs Kimi K3
GPT-5.6 Terra leads on 5 of 5 shared benchmarks. GPT-5.6 Terra is 2.7× cheaper per token on a blended 3:1 basis. GPT-5.6 Terra accepts the larger context window (1.1M).
Head to head
Blended price uses a 3:1 input:output mix
| GPT-5.6 Terra | Kimi K3 | |
|---|---|---|
| Provider | OpenAI | Moonshot AI |
| Input $/1M | $1.00 | $3.00 |
| Output $/1M | $6.00 | $15.00 |
| Blended $/1M | $2.25 | $6.00 |
| Context window | 1.1M | 1.0M |
| Max output | 128K | — |
| Released | Jul 2026 | Jul 2026 |
| Licence | Proprietary | Open weights |
| GPQA Diamond | 93.3% | 93.1% |
| FrontierMath T1–3 | 86.0% | 72.2% |
| FrontierMath T4 | 70.7% | 39.0% |
| SimpleQA Verified | 43.1% | 42.7% |
| OTIS Mock AIME | 99.7% | 97.2% |
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 GPT-5.6 Terra if…
- Costs less per token — $2.25 vs $6.00 blended
- Higher GPQA Diamond (93.3% vs 93.1%)
- Higher FrontierMath T1–3 (86.0% vs 72.2%)
- Higher FrontierMath T4 (70.7% vs 39.0%)
- Higher SimpleQA Verified (43.1% vs 42.7%)
- Larger context window (1.1M)
Choose Kimi K3 if…
- Open weights — self-hostable
- Newer model (released Jul 2026)
FAQ
Which is better, GPT-5.6 Terra or Kimi K3?
Across the 5 benchmarks both models have independently-run scores for, GPT-5.6 Terra leads on 5 and Kimi K3 leads on 0. Benchmarks are one input — price and context window are on this page too.
Is GPT-5.6 Terra cheaper than Kimi K3?
GPT-5.6 Terra is cheaper: $2.25 versus $6.00 per million tokens blended at 3:1 input:output. Input alone: $1.00 vs $3.00. Output alone: $6.00 vs $15.00.
What context windows do GPT-5.6 Terra and Kimi K3 have?
GPT-5.6 Terra: 1,050,000 tokens. Kimi K3: 1,048,576 tokens.
Who makes GPT-5.6 Terra and Kimi K3?
GPT-5.6 Terra is made by OpenAI. Kimi K3 is made by Moonshot AI.