GPT Chat Latest Paid vs PEPerceptron Mk1.5 Paid
GPT Chat Latest vs Perceptron Mk1.5 compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
GPT Chat Latest — full profile › · Perceptron Mk1.5 — full profile ›
Prices & specs refreshed from live data · olud.ai
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
$30 /M outputManaged API (no infra to run)
$1.5 /M outputManaged API (no infra to run)
GPT Chat Latest vs Perceptron Mk1.5 specs
| Spec | GPT Chat Latest | Perceptron Mk1.5 | Winner |
|---|---|---|---|
| Maker | OpenAI | Perceptron | – |
| Type | Proprietary | Proprietary | – |
| Context window | 400K tokens | 37K tokens | |
| Input price | $5/M | $0.15/M | PEPerceptron Mk1.5 |
| Output price | $30/M | $1.5/M | PEPerceptron Mk1.5 |
| Vision / multimodal | Yes | Yes | = Tie |
| Tool / function calling | Yes | Yes | = Tie |
| Self-hostable | No (API only) | No (API only) | – |
| License | Proprietary | Proprietary | – |
Price gap & when to choose each
Perceptron Mk1.5 is ~20× cheaper than GPT Chat Latest on output tokens ($1.5 vs $30 per M tokens).
- You want frontier performance through a managed API
- You need the longer 400K context window
- You value reliability & ecosystem
- You don't want to manage infrastructure
- You want frontier performance through a managed API
- You want the lower output price
- You value reliability & ecosystem
- You don't want to manage infrastructure
Feature comparison
| Capability | GPT Chat Latest | Perceptron Mk1.5 |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✓ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✗ | ✗ |
How GPT Chat Latest and Perceptron Mk1.5 score
| Criterion | GPT Chat Latest | Perceptron Mk1.5 |
|---|---|---|
| Cost-efficiency | 3.0 | 4.5 |
| Context window | 4.5 | 2.5 |
| Openness | 1.5 | 1.5 |
| Self-hosting | 1.0 | 1.0 |
| Multimodality | 5.0 | 5.0 |
Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.
What each model is
GPT Chat Latest Paid
GPT Chat Latest points to OpenAI's stable API alias `chat-latest` that always resolves to the latest Instant chat model used in ChatGPT. As OpenAI rolls out new Instant model updates...
Perceptron Mk1.5 Paid
Perceptron Mk1.5 is Perceptron's embodied reasoning model for physical agents. It accepts text, image, video, and audio input, and answers with text plus optional structured annotations: points, boxes, polygons, tracks,...
Frequently asked questions
GPT Chat Latest vs Perceptron Mk1.5 — which is cheaper?
Perceptron Mk1.5 is cheaper on output ($1.5/M vs $30/M).
Which has the larger context window?
GPT Chat Latest offers the larger context window (400K tokens).
GPT Chat Latest vs Perceptron Mk1.5 — which should I pick in 2026?
Choose Perceptron Mk1.5 for the lower output price ($1.5/M vs $30/M). Choose GPT Chat Latest if you need the larger 400K context window.
People also compare
Explore more open-source AI
Browse the full open-source model leaderboard, thousands of tools and live benchmarks — all in one place.
Open the leaderboard →