Perceptron Mk1 is $1.1 cheaper per 1M input tokens (88% lower; 8.33x difference).
API cost decision in 10 seconds
NewPerceptron Mk1 vs Cogito v2.1 671B
Pick Perceptron Mk1 for lower cost; pick Cogito v2.1 671B only if the larger context window matters more.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Perceptron Mk1 for lower cost; pick Cogito v2.1 671B only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Perceptron Mk1 is estimated at $0.9 vs $1.88 for Cogito v2.1 671B, saving $0.97 (52% lower).
Cost-first pickPerceptron Mk1
Context-first pickCogito v2.1 671B
Sample savings$0.9752%
10x traffic gap$9.75
Cogito v2.1 671B has more context, but Perceptron Mk1 saves $0.97 on the standard workload. At 10x that traffic, the same price gap is about $9.75. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Cost winner changes by workload shape: input-heavy / RAG favors Perceptron Mk1, balanced workload favors Perceptron Mk1, and output-heavy chatbot favors Cogito v2.1 671B.
| Workload shape | Token mix | Better pick | Perceptron Mk1 | Cogito v2.1 671B |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Perceptron Mk1 | $1.5 | $6.88 |
| Balanced workload | 1M input + 1M output | Perceptron Mk1 | $1.65 | $2.5 |
| Output-heavy chatbot | 1M input + 5M output | Cogito v2.1 671B | $7.65 | $7.5 |
Cogito v2.1 671B is $0.25 cheaper per 1M output tokens (16.7% lower; 1.2x difference).
Cogito v2.1 671B has 95.23K more context (3.91x larger).
Perceptron Mk1 is $0.97 cheaper on the standard workload (52% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Perceptron Mk1 has the lower input price; Cogito v2.1 671B has the lower output price; Cogito v2.1 671B offers the larger context window. For the 1M input plus 500K output sample, Perceptron Mk1 is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $0.9 for Perceptron Mk1 and $1.88 for Cogito v2.1 671B.
Choose Perceptron Mk1 when you care most about lower input-token price.
Choose Cogito v2.1 671B when you care most about lower output-token price, and larger context window.
- On the standard 1M input plus 500K output workload, Perceptron Mk1 is estimated at $0.9 vs $1.88 for Cogito v2.1 671B, saving $0.97 (52% lower).
- Perceptron Mk1 is $0.97 cheaper on the standard workload (52% lower).
- Perceptron Mk1 is $1.1 cheaper per 1M input tokens (88% lower; 8.33x difference).
- Cogito v2.1 671B is $0.25 cheaper per 1M output tokens (16.7% lower; 1.2x difference).
- Cogito v2.1 671B has 95.23K more context (3.91x larger).
| Feature | NewPerceptron Mk1 (Perceptron) | Cogito v2.1 671B (Deep Cogito) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.15 | $1.25 |
| Completion Price per 1M tokens | $1.5 | $1.25 |
| Sample Workload Cost 1M input + 500K output | $0.9 | $1.88 |
| Context Window | 32.77K | 128K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Perceptron Mk1 | On the standard 1M input plus 500K output workload, Perceptron Mk1 is estimated at $0.9 vs $1.88 for Cogito v2.1 671B, saving $0.97 (52% lower). |
| High-volume input processing | Perceptron Mk1 | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Cogito v2.1 671B | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Cogito v2.1 671B | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- No lower-cost same-provider swap is currently tracked for this pair.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Owl Alpha offers 1.05M context with $0 sample workload cost.
- Gemini 3.1 Flash Lite offers 1.05M context with $1 sample workload cost.
- DeepSeek V4 Pro offers 1.05M context with $0.87 sample workload cost.
- No popular competitor is currently available.
Cheaper alternatives
Review low-cost models sorted by a standard 1M input plus 500K output workload.
Open cheapest modelsLarger context alternatives
Find models with larger context windows for RAG, long documents, and codebase review.
Open largest context modelsProvider catalogs
Compare models within provider hubs before choosing a final API vendor.
Open provider hubsPerceptron catalog
Review all tracked Perceptron models before deciding whether this matchup is the right shortlist.
Open Perceptron modelsDeep Cogito catalog
Check other Deep Cogito models with comparable pricing, context, or release timing.
Open Deep Cogito modelsPerceptron Mk1 (Mark One) is Perceptron's highest-quality vision-language model for video and embodied reasoning.** It accepts image and video inputs paired with natural language queries, and produces detailed visual understanding...
Cogito v2.1 671B MoE represents one of the strongest open models globally, matching performance of frontier closed and open models. This model is trained using self play with reinforcement learning...