Best for coding
Insufficient dataEvidence
comparable_coding_benchmark_missingNo same-source coding benchmark is attached to both model versions.
MODEL COMPARE
VerifiedDeepSeek V3.1 vs DeepSeek V3.1 Terminus: Pricing, Capabilities and Benchmarks
Compare DeepSeek V3.1 and DeepSeek V3.1 Terminus across context window, API pricing, modalities, tool use and recommended use cases.
DECISION SUMMARY
Decision summary
Recommendations are conditional. Unknown values never count as a loss, and missing comparable benchmarks produce no winner.
Best for agents
Insufficient dataEvidence
comparable_agent_benchmark_missingCapabilities are listed, but a comparable agent benchmark is missing.
Long context
TieEvidence
context_window_largerDeepSeek V3.1=163840; DeepSeek V3.1 Terminus=163840
Lower monthly token cost
DeepSeek V3.1Evidence
same_provider_monthly_cost_lowerDeepSeek V3.1=0.44; DeepSeek V3.1 Terminus=0.47000000000000003; input=1000000; cached_input=0; output=200000; provider=OpenRouter
Open deployment
Insufficient dataEvidence
open_weights_supportDeepSeek V3.1=unknown; DeepSeek V3.1 Terminus=unknown
| Attribute | DeepSeek V3.1 | DeepSeek V3.1 Terminus | Winner |
|---|---|---|---|
Context windowcontext_window_largerProvider endpoint | 164K | 164K | Tie |
Maximum outputmax_output_largerProvider endpoint | 33K | 164K | DeepSeek V3.1 Terminus |
Input modalitiesinput_modalities_differProvider endpoint | Text | Text | Insufficient data |
Output modalitiesoutput_modalities_differProvider endpoint | Text | Text | Insufficient data |
Tool callingtool_calling_supportProvider endpoint | Supported | Supported | Tie |
Structured outputstructured_output_supportProvider endpoint | Supported | Supported | Tie |
Reasoningreasoning_supportModel | Supported | Supported | Insufficient data |
Open weightsopen_weights_supportModel | Unknown | Unknown | Insufficient data |
Input price per 1M tokensinput_price_lowerProvider endpoint | $0.25 | $0.27 | DeepSeek V3.1 |
Output price per 1M tokensoutput_price_lowerProvider endpoint | $0.95 | $1 | DeepSeek V3.1 |
USAGE ESTIMATOR
Monthly cost calculator
Estimate token charges for the selected provider endpoints. Image, audio, request and web-search charges are not included.
This is a provider snapshot, not a quote. Confirm production pricing before use.