Side by side
DeepSeek V3.1 Terminus vs Perceptron Mk1.5
Source: OpenRouter (live)
Live figures
The numbers
Best value in each row is highlighted. "Not declared" means the provider does not advertise the feature on its listing.
| Attribute | ||
|---|---|---|
| Input priceUSD per 1M tokens | $0.27 | $0.15 (best) |
| Output priceUSD per 1M tokens | $1.00 (best) | $1.50 |
| Blended price75% in / 25% out | $0.45 (best) | $0.49 |
| Vs. market median | 47% cheaper | 43% cheaper |
| Value rankcheapest = 1 | #151 (best) | #156 |
| Context windowtokens | 164K (best) | 37K |
| Max outputtokens | 33K (best) | 8K |
| Input modalities | text | text, image, video, audio |
| Output modalities | text | text |
| Tool calling | Declared | Declared |
| Reasoning | Declared | Declared |
| Structured output | Declared | Declared |
| Listed on OpenRouter | 2025-09-22 | 2026-09-25 (best) |
Blended price assumes a 3:1 input-to-output token mix. Median is across all 431 priced models.
Add or swap modelsCost calculator
At your volume
Estimate the monthly bill for these models at your own token volumes.
| Model | Input | Output | Monthly | Yearly | vs cheapest | |
|---|---|---|---|---|---|---|
| DeepSeek: DeepSeek V3.1 Terminus DeepSeek · $0.270 in / $1.00 out per M | $14 | $15 | $29 | $342 | Cheapest | |
| Perceptron: Perceptron Mk1.5 Perceptron · $0.150 in / $1.50 out per M | $7.50 | $23 | $30 | $360 | +$1.50 (1.1×) |
Estimates use list prices per million tokens from live provider listings. Cached-input, batch and volume discounts are not included, so real bills are often lower.
Read-out
What the numbers say
- DeepSeek: DeepSeek V3.1 Terminus is the cheapest here at $0.45/M blended; Perceptron: Perceptron Mk1.5 costs 8% more.
- DeepSeek: DeepSeek V3.1 Terminus offers the largest context window (164K tokens) versus 37K for Perceptron: Perceptron Mk1.5.
Models
Model pages
Full pricing history, capabilities and alternatives for each model in this comparison.
DeepSeek: DeepSeek V3.1 Terminus
DeepSeek
$0.453
/M blended
Perceptron
$0.487
/M blended
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