GPT Chat Latest Paid vs 
Muse Spark 1.1 Paid
GPT Chat Latest vs Muse Spark 1.1 compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
GPT Chat Latest — full profile › · Muse Spark 1.1 — 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)
$4.25 /M outputManaged API (no infra to run)
GPT Chat Latest vs Muse Spark 1.1 specs
| Spec | GPT Chat Latest | Muse Spark 1.1 | Winner |
|---|---|---|---|
| Maker | OpenAI | Meta | – |
| Type | Proprietary | Proprietary | – |
| Context window | 400K tokens | 1M tokens | |
| Input price | $5/M | $1.25/M | |
| Output price | $30/M | $4.25/M | |
| 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
Muse Spark 1.1 is ~7.1× cheaper than GPT Chat Latest on output tokens ($4.25 vs $30 per M tokens).
- You want frontier performance through a managed API
- You value reliability & ecosystem
- You don't want to manage infrastructure
- You want frontier performance through a managed API
- You need the longer 1M context window
- You want the lower output price
- You value reliability & ecosystem
- You don't want to manage infrastructure
Feature comparison
| Capability | GPT Chat Latest | Muse Spark 1.1 |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✓ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✗ | ✓ |
Benchmarks: GPT Chat Latest vs Muse Spark 1.1
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
How GPT Chat Latest and Muse Spark 1.1 score
| Criterion | GPT Chat Latest | Muse Spark 1.1 |
|---|---|---|
| Cost-efficiency | 3.0 | 4.0 |
| Context window | 4.5 | 5.0 |
| 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...
Muse Spark 1.1 Paid
Muse Spark 1.1 is a multimodal reasoning model from Meta, built for agentic tasks. It accepts text, images, video, audio, and PDF documents and returns text, with a 1M-token context...
Frequently asked questions
GPT Chat Latest vs Muse Spark 1.1 — which is cheaper?
Muse Spark 1.1 is cheaper on output ($4.25/M vs $30/M).
Which has the larger context window?
Muse Spark 1.1 offers the larger context window (1M tokens).
GPT Chat Latest vs Muse Spark 1.1 — which should I pick in 2026?
Choose Muse Spark 1.1 for the lower output price ($4.25/M vs $30/M). It also gives you the larger 1M context window.
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