GPT Chat Latest vs Grok 4.6 compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
GPT Chat Latest — full profile › · Grok 4.6 — full profile ›
Prices & specs refreshed from live data · olud.ai
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
| Spec | GPT Chat Latest | Grok 4.6 | Winner |
|---|---|---|---|
| Maker | OpenAI | xAI | – |
| Type | Proprietary | Proprietary | – |
| Context window | 400K tokens | 500K tokens | |
| Input price | $5/M | $2/M | |
| Output price | $30/M | $6/M | |
| Vision / multimodal | Yes | Yes | = Tie |
| Tool / function calling | Yes | Yes | = Tie |
| Self-hostable | No (API only) | No (API only) | – |
| License | Proprietary | Proprietary | – |
Grok 4.6 is ~5.0× cheaper than GPT Chat Latest on output tokens ($6 vs $30 per M tokens).
| Capability | GPT Chat Latest | Grok 4.6 |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✓ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✗ | ✗ |
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
| Criterion | GPT Chat Latest | Grok 4.6 |
|---|---|---|
| Cost-efficiency | 3.0 | 4.0 |
| Context window | 4.5 | 4.5 |
| 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.
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...
Grok 4.6 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
These variants are tracked but not compared here — one page per family keeps the comparison readable.
Grok 4.6 is cheaper on output ($6/M vs $30/M).
Grok 4.6 offers the larger context window (500K tokens).
Choose Grok 4.6 for the lower output price ($6/M vs $30/M). It also gives you the larger 500K context window.
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