API cost decision in 10 seconds

Perceptron Mk1 vs 🔥GPT-5.5

Pick Perceptron Mk1 for lower cost; pick GPT-5.5 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 GPT-5.5 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 $20 for GPT-5.5, saving $19.1 (95.5% lower).

Cost-first pickPerceptron Mk1
Context-first pickGPT-5.5
Sample savings$19.195.5%
10x traffic gap$191

GPT-5.5 has more context, but Perceptron Mk1 saves $19.1 on the standard workload. At 10x that traffic, the same price gap is about $191. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Perceptron Mk1 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickPerceptron Mk1GPT-5.5
Input-heavy / RAG 5M input + 500K output Perceptron Mk1 $1.5 $40
Balanced workload 1M input + 1M output Perceptron Mk1 $1.65 $35
Output-heavy chatbot 1M input + 5M output Perceptron Mk1 $7.65 $155
Cheaper inputPerceptron Mk1$0.15 vs $5 / 1M
Cheaper outputPerceptron Mk1$1.5 vs $30 / 1M
Larger contextGPT-5.532.77K vs 1.05M
Sample workloadPerceptron Mk1$0.9 vs $20

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
Perceptron Mk1Calculating…Estimated API cost
GPT-5.5Calculating…Estimated API cost
Cheaper for this workloadCalculating…Difference: calculating…

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

Verdict

Perceptron Mk1 has the lower input price, Perceptron Mk1 has the lower output price, and GPT-5.5 offers the larger context window.

For a 1M input token plus 500K output token workload, the estimated API cost is $0.9 for Perceptron Mk1 and $20 for GPT-5.5.

Best Fit

Choose Perceptron Mk1 when you care most about lower input-token price, and lower output-token price.

Choose GPT-5.5 when you care most about larger context window.

Head-to-Head Specs
FeaturePerceptron Mk1
(Perceptron)		🔥GPT-5.5
(OpenAI)
Input Price
prompt tokens per 1M		$0.15$5
Completion Price
per 1M tokens		$1.5$30
Sample Workload Cost
1M input + 500K output		$0.9$20
Context Window32.77K1.05M
Release Date2026-05-122026-04-24
Popularity#17
Perceptron Mk1

Perceptron 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...

GPT-5.5

GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionPerceptron Mk1On the standard 1M input plus 500K output workload, Perceptron Mk1 is estimated at $0.9 vs $20 for GPT-5.5, saving $19.1 (95.5% lower).
High-volume input processingPerceptron Mk1Lower prompt-token price matters most when prompts or retrieved passages dominate the bill.
Long responses and chatbotsPerceptron Mk1Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workGPT-5.5A larger context window leaves more room for retrieved passages and source files.