DeepSeek V3.1 Terminus vs GPT-6.1 Sol Pro
Price, context window & benchmark comparison
VS
Compare different models
Verdict: DeepSeek V3.1 Terminus is 8.8× cheaper than GPT-6.1 Sol Pro on a typical 3:1 input/output mix. GPT-6.1 Sol Pro has the larger context window (1.1M vs 164K).
| DeepSeek V3.1 Terminus | GPT-6.1 Sol Pro | |
|---|---|---|
| Input price / 1M | $0.27 | $2.00 |
| Output price / 1M | $1.00 | $10.00 |
| Blended price (3:1) | $0.45 | $4.00 |
| Cached input / 1M | — | $0.10 |
| Context window | 164K | 1.1M |
| Max output | 147K | 128K |
| Intelligence index | — | — |
| Coding index | 43.5 | — |
| Providers | — | 7 |
| Best provider uptime (30m) | — | 100.0% |
| Vision input | No | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2025-09-22 | 2026-09-29 |
| Retirement | — | — |
Cost calculator
FAQ
Which is cheaper, DeepSeek V3.1 Terminus or GPT-6.1 Sol Pro?
DeepSeek V3.1 Terminus is 8.8× cheaper than GPT-6.1 Sol Pro on a typical 3:1 input/output mix.
DeepSeek V3.1 Terminus vs GPT-6.1 Sol Pro: which has a bigger context window?
DeepSeek V3.1 Terminus: 163,840 tokens. GPT-6.1 Sol Pro: 1,050,000 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: DeepSeek V3.1 Terminus ≈ $1,040, GPT-6.1 Sol Pro ≈ $9,000.
More comparisons
DeepSeek V3.1 Terminus vs Gemini 4 CarbonDeepSeek V3.1 Terminus vs Claude Fable 5.2DeepSeek V3.1 Terminus vs Gemini Omni 1.2 FlashDeepSeek V3.1 Terminus vs Gemini Omni 1.1 FlashDeepSeek V3.1 Terminus vs Hy4DeepSeek V3.1 Terminus vs GLM 5.3 FlashX LegalDeepSeek V3.1 Terminus vs GPT-6.1 TerraDeepSeek V3.1 Terminus vs GPT-6.1 Terra ProDeepSeek V3.1 Terminus vs Kimi K3.1 ProDeepSeek V3.1 Terminus vs MiniMax M3.1 FlashDeepSeek V3.1 Terminus vs DeepSeek V4.1 Flash 1017DeepSeek V3.1 Terminus vs Nemotron 3.5 Super VLDeepSeek V3.1 Terminus vs Gemini 4 ArgonDeepSeek V3.1 Terminus vs Claude Haiku 5.5DeepSeek V3.1 Terminus vs Nano Banana 2.1DeepSeek V3.1 Terminus vs Mistral Large 4GPT-6.1 Sol Pro vs Gemini 4 CarbonGPT-6.1 Sol Pro vs Claude Fable 5.2GPT-6.1 Sol Pro vs Gemini Omni 1.2 FlashGPT-6.1 Sol Pro vs Gemini Omni 1.1 FlashGPT-6.1 Sol Pro vs Hy4GPT-6.1 Sol Pro vs GLM 5.3 FlashX LegalGPT-6.1 Sol Pro vs GPT-6.1 TerraGPT-6.1 Sol Pro vs GPT-6.1 Terra Pro