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DeepSeek V3.1 vs GPT-5.6 Terra Pro

DeepSeek V3.1

DeepSeek

72#151
vs
Signal-by-Signal Comparison
SignalDeepSeek V3.1DeltaGPT-5.6 Terra Pro
Capabilities
67
-33
100
Benchmarks
69
-18
88
Pricing
99
+5
94
Context window size
83
-13
96
Recency
69
-31
100
Output Capacity
75
-10
85
Overall Result
1 wins
of 6
5 wins
GPT-5.6 Terra Pro wins 5 of 6 signals

Score History

Score History (25 data points)
DeepSeek V3.1GPT-5.6 Terra Pro
DeepSeek V3.1

71.8

current score

Leader

GPT-5.6 Terra Pro

right now

GPT-5.6 Terra Pro

89

current score

LMMarketCap.com
Interactive Price Comparison
100Kcalls/month
1,000tokens (~1,333 chars)
500tokens (~667 chars)

DeepSeek V3.1

DeepSeek

Best Value
Per request$0.000725
Daily$2.42
Monthly$72.50
Annual$870.00

GPT-5.6 Terra Pro

OpenAI

Per request$0.004000
Daily$13.33
Monthly$400.00
Annual$4800.00

DeepSeek V3.1 saves you $327.50/month

That's $3930.00/year compared to GPT-5.6 Terra Pro at your current usage level of 100K calls/month.

82% cheaper
Choose DeepSeek V3.1 for cost optimization

DeepSeek V3.1 pricing:
Input:$0.25/M tokens
Output:$0.95/M tokens
GPT-5.6 Terra Pro pricing:
Input:$1.00/M tokens
Output:$6.00/M tokens
DeepSeek V3.1

DeepSeek

72

Composite Score

Winner
GPT-5.6 Terra Pro

OpenAI

89

Composite Score

Signal-by-Signal Comparison
MetricDeepSeek V3.1GPT-5.6 Terra ProWinner
Overall Score
72
89
GPT-5.6 Terra Pro
Rank#151#36
GPT-5.6 Terra Pro
Quality Rank#151#36
GPT-5.6 Terra Pro
Adoption Rank#151#36
GPT-5.6 Terra Pro
Parameters------
Context Window164K1050K
GPT-5.6 Terra Pro
Pricing$0.25/$0.95/M$1.00/$6.00/M--
Signal Scores
Capabilities
67
100
GPT-5.6 Terra Pro
Benchmarks
69
88
GPT-5.6 Terra Pro
Pricing
99
94
DeepSeek V3.1
Context window size
83
96
GPT-5.6 Terra Pro
Recency
69
100
GPT-5.6 Terra Pro
Output Capacity
75
85
GPT-5.6 Terra Pro
Benchmark Head-to-Head(11 benchmarks)
DeepSeek V3.1: 0GPT-5.6 Terra: 1
DeepSeek V3.1
GPT-5.6 Terra
Normalized 0-100%
MMLU
-93%
MMLU-Pro
-84.5%
GPQA Diamond
-85%
MATH-500
-92.5%
HumanEval
-96.5%
SWE-bench Verified
-75%
IFEval
-92%
BBH
-90.5%
Arena Elo
14181465
LiveBench
-76%
HLE
-35%
Benchmark Interpretation

Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.

DeepSeek V3.1Strong Performer

Scores 72/100 (rank #151), placing it in the top 48% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100
GPT-5.6 Terra ProElite Tier

Scores 89/100 (rank #36), placing it in the top 88% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100

GPT-5.6 Terra Pro has a 17-point advantage, which typically translates to noticeably stronger performance on complex reasoning, code generation, and multi-step tasks.

When to Use Each Model

Choose DeepSeek V3.1 when you need:

  • High-volume production workloads where API costs must be minimized
  • Step-by-step reasoning and chain-of-thought problem solving
  • Self-hosted deployments where you need full control over the model

Choose GPT-5.6 Terra Pro when you need:

  • Processing long documents or large codebases (1050K token context)
  • Multimodal workflows that require image understanding
  • Step-by-step reasoning and chain-of-thought problem solving
Cost-Performance Analysis
DeepSeek V3.1Best Value
Input cost$0.25/M tokens
Output cost$0.95/M tokens
Cost per quality point$0.017
Est. monthly (1M tokens/day)$18.00
GPT-5.6 Terra Pro
Input cost$1.00/M tokens
Output cost$6.00/M tokens
Cost per quality point$0.079
Est. monthly (1M tokens/day)$105.00

DeepSeek V3.1 offers 83% better value per quality point. At 1M tokens/day, you'd spend $18.00/month with DeepSeek V3.1 vs $105.00/month with GPT-5.6 Terra Pro - a $87.00 monthly difference.

Latency & Speed
DeepSeek V3.1Faster
Speed score0/100
GPT-5.6 Terra Pro
Speed score0/100

Both models have comparable response speeds. For most applications, the latency difference is negligible.

When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.

Example Use Cases

Code generation & review

Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring

DeepSeek V3.1

Customer support chatbot

Suitable for user-facing chat with competitive response times. DeepSeek V3.1 also offers lower per-token costs for high-volume support

DeepSeek V3.1

Long document analysis

Larger context window (1050K tokens) can process longer documents, contracts, and research papers in a single pass

GPT-5.6 Terra Pro

Batch data extraction

Lower output pricing ($0.95/M) reduces costs when processing thousands of records daily

DeepSeek V3.1

Creative writing & content

Higher overall composite score (89/100) correlates with better nuance, coherence, and style in long-form content

GPT-5.6 Terra Pro

Image understanding & OCR

Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly

GPT-5.6 Terra Pro
Which Should You Choose?
Our recommendation:
GPT-5.6 Terra Pro

GPT-5.6 Terra Pro clearly outperforms DeepSeek V3.1 with a significant 17.200000000000003-point lead. For most general use cases, GPT-5.6 Terra Pro is the stronger choice. However, DeepSeek V3.1 may still excel in niche scenarios.

by DeepSeek

  • Choose for Quality - Marginally better benchmark scores; both are excellent
  • Choose for Cost - 83% lower pricing; better value at scale
  • Choose for Reliability - Higher uptime and faster response speeds
  • Choose for Prototyping - Stronger community support and better developer experience
  • Choose for Production - Wider enterprise adoption and proven at scale

by OpenAI

Consider for specialized use cases.

Capability Comparison
CapabilityDeepSeek V3.1GPT-5.6 Terra Pro
Vision (Image Input)differs
Function Calling
Streaming
JSON Mode
Reasoning
Web Searchdiffers
Image Output
Monthly Cost Calculator
1,000tokens (600 in / 400 out)
100requests/day (3,000/month)

DeepSeek V3.1

DeepSeek

Best Value
$1.59
estimated monthly cost

GPT-5.6 Terra Pro

OpenAI

$9.00
estimated monthly cost

DeepSeek V3.1 saves you $7.41/month

That's 82% cheaper than GPT-5.6 Terra Pro at 1,000 tokens/request and 100 requests/day.

Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.

Parameters & Context
ParameterDeepSeek V3.1GPT-5.6 Terra Pro
Context Window164K1.1M
Max Output Tokens32,768128,000
Open SourceYesNo
CreatedAug 21, 2025Jul 9, 2026
Last updated: 27m ago

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