LLM Comparison
DeepSeek V3.1 Terminus vs DeepSeek V4 Pro
Side-by-side specs, pricing & capabilities · Updated September 2026
Price vs Intelligence
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2/6 modelsSame tier:
| Organization | ||
| OpenTools Score | 40 80.8 | 49 18.7 |
| Family | DeepSeek | DeepSeek V4 |
| Status | Current | Current |
| Release Date | Sep 2025 | Aug 2026 |
| Context Window | 164K tokens | 1.0M tokens |
| Input Price | $0.21/M tokens | $1.32/M tokens |
| Output Price | $0.79/M tokens | $3.96/M tokens |
| Pricing Notes | Cache read: $0.1300/M tokens | DeepSeek direct API, DeepSeek-V4-Pro-0813: headline prices are peak uncached input $1.32 and output $3.96 per million tokens. Off-peak input is $0.66 and output $1.98; cache-hit input is $0.044 peak/$0.022 off-peak. Peak hours are 01:00-04:00 and 06:00-10:00 UTC Monday-Friday; all other hours are off-peak. DeepSeek has withdrawn the planned September 14, 2026 retirement and continues this API. Rates are conditional, not an unconditional off-peak offer. |
| Capabilities | textcode | reasoningcodingtool-usestructured-outputlong-contextagenticresponses-api |
| Max Output | — | 393K tokens |
| API Identifier | deepseek/deepseek-v3.1-terminus | deepseek-v4-pro |
| Benchmarks | ||
| MMLU-Pro | 85deepseek | — |
| GPQA Diamond | 80.7deepseek | 92.8283artificial-analysis |
| AIME 2025 | 53.7deepseek | — |
| LiveCodeBench | 74.9deepseek | — |
| SWE-bench Verified | 68.4deepseek | — |
| Terminal-Bench Hard | 31.8deepseek | — |
| HLE | 21.7deepseek | — |
| Artificial Analysis Intelligence Index v4.1 | — | 44artificial-analysis |
| Artificial Analysis Intelligence Index v4.1.1 | — | 53artificial-analysis |
| Artificial Analysis Intelligence Index v4.3 | — | 36.2829artificial-analysis |
| SciCode | — | 51.0417artificial-analysis |
| Terminal-Bench 2.1 | — | 78.6517artificial-analysis |
| Artificial Analysis Intelligence Index v4.3.2 | — | 20.3605101726847artificial-analysis |
| View DeepSeek V3.1 Terminus | View DeepSeek V4 Pro | |
Cost Calculator
Enter your expected monthly token usage to compare costs.
| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| DeepSeek V3.1 TerminusCheapest | $0.21 | $0.40 | $0.61 | — |
| DeepSeek V4 Pro | $1.32 | $1.98 | $3.30 | +445% |
DeepSeek
DeepSeek V3.1 Terminus
DeepSeek V3.1 Terminus is a large language model from DeepSeek. Supports up to 163,840 token context window. Achieves 87.1% on MMLU. Available from $0.21/M input tokens.
DeepSeek
DeepSeek V4 Pro
DeepSeek V4 Pro 0813 is an open-weight Mixture-of-Experts reasoning model for long-context coding, tool use, and agentic workloads, with native Responses API support through the DeepSeek API.
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