| Signal | Claude 3.5 Sonnet | Delta | DeepSeek V3.1 Terminus |
|---|---|---|---|
Capabilities | 50 | -17 | |
Benchmarks | 72 | +3 | |
Pricing | 70 | -29 | |
Context window size | 84 | +1 | |
Recency | 36 | -61 | |
Output Capacity | 65 | +45 | |
| Overall Result | 3 wins | of 6 | 3 wins |
Score History
69.4
current score
Tied
right now
69.4
current score
Anthropic
DeepSeek
DeepSeek V3.1 Terminus saves you $2039.50/month
That's $24474.00/year compared to Claude 3.5 Sonnet at your current usage level of 100K calls/month.
| Metric | Claude 3.5 Sonnet | DeepSeek V3.1 Terminus | Winner |
|---|---|---|---|
| Overall Score | 69 | 69 | -- |
| Rank | #59 | #58 | DeepSeek V3.1 Terminus |
| Quality Rank | #59 | #58 | DeepSeek V3.1 Terminus |
| Adoption Rank | #59 | #58 | DeepSeek V3.1 Terminus |
| Parameters | -- | -- | -- |
| Context Window | 200K | 164K | Claude 3.5 Sonnet |
| Pricing | $6.00/$30.00/M | $0.21/$0.79/M | -- |
| Signal Scores | |||
| Capabilities | 50 | 67 | DeepSeek V3.1 Terminus |
| Benchmarks | 72 | 69 | Claude 3.5 Sonnet |
| Pricing | 70 | 99 | DeepSeek V3.1 Terminus |
| Context window size | 84 | 83 | Claude 3.5 Sonnet |
| Recency | 36 | 98 | DeepSeek V3.1 Terminus |
| Output Capacity | 65 | 20 | Claude 3.5 Sonnet |
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.
Scores 69/100 (rank #59), placing it in the top 80% of all 290 models tracked.
Scores 69/100 (rank #58), placing it in the top 80% of all 290 models tracked.
With only a 0-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.
DeepSeek V3.1 Terminus offers 97% better value per quality point. At 1M tokens/day, you'd spend $15.00/month with DeepSeek V3.1 Terminus vs $540.00/month with Claude 3.5 Sonnet - a $525.00 monthly difference.
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.
Code generation & review
Higher benchmark score (0/100) indicates stronger performance on coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Faster response time (speed score 0/100) is critical for user-facing chat. DeepSeek V3.1 Terminus also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (200K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.79/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (69/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
Claude 3.5 Sonnet and DeepSeek V3.1 Terminus are extremely close in overall performance (only 0 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.
Best for Quality
Claude 3.5 Sonnet
Marginally better benchmark scores; both are excellent
Best for Cost
DeepSeek V3.1 Terminus
97% lower pricing; better value at scale
Best for Reliability
Claude 3.5 Sonnet
Higher uptime and faster response speeds
Best for Prototyping
Claude 3.5 Sonnet
Stronger community support and better developer experience
Best for Production
Claude 3.5 Sonnet
Wider enterprise adoption and proven at scale
by Anthropic
| Capability | Claude 3.5 Sonnet | DeepSeek V3.1 Terminus |
|---|---|---|
| Vision (Image Input)differs | ||
| Function Calling | ||
| Streaming | ||
| JSON Modediffers | ||
| Reasoningdiffers | ||
| Web Search | ||
| Image Output |
Anthropic
DeepSeek
DeepSeek V3.1 Terminus saves you $45.47/month
That's 97% cheaper than Claude 3.5 Sonnet 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.
| Parameter | Claude 3.5 Sonnet | DeepSeek V3.1 Terminus |
|---|---|---|
| Context Window | 200K | 164K |
| Max Output Tokens | 8,192 | -- |
| Open Source | No | Yes |
| Created | Oct 22, 2024 | Sep 22, 2025 |
Both Claude 3.5 Sonnet and DeepSeek V3.1 Terminus score 69/100, making them extremely close competitors. Choose based on pricing, provider ecosystem, or specific capability requirements.
Claude 3.5 Sonnet is ranked #59 and DeepSeek V3.1 Terminus is ranked #58 out of 290+ AI models. Rankings use a composite score combining benchmark performance (90%) from MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations, with capabilities and context window as tiebreakers (10%). Scores update hourly.
DeepSeek V3.1 Terminus is cheaper at $0.79/M output tokens vs Claude 3.5 Sonnet's $30.00/M output tokens - 38.0x more expensive. Input token pricing: Claude 3.5 Sonnet at $6.00/M vs DeepSeek V3.1 Terminus at $0.21/M.
Claude 3.5 Sonnet has a larger context window of 200,000 tokens compared to DeepSeek V3.1 Terminus's 163,840 tokens. A larger context window means the model can process longer documents and conversations.