Grok 4.5 Paid vs Grok 4.3 Paid
Grok 4.5 vs Grok 4.3 compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
Grok 4.5 — full profile › · Grok 4.3 — full profile ›
Prices & specs refreshed from live data · OpenSourceAI.tech
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
Grok 4.5 vs Grok 4.3 specs
| Spec | Grok 4.5 | Grok 4.3 |
|---|---|---|
| Maker | xAI | xAI |
| Type | Proprietary | Proprietary |
| Context window | 500K tokens | 1M tokens |
| Input price | $2/M | $1.25/M |
| Output price | $6/M | $2.5/M |
| Vision / multimodal | Yes | Yes |
| Tool / function calling | Yes | Yes |
| Self-hostable | No (API only) | No (API only) |
| License | Proprietary | Proprietary |
Feature comparison
| Capability | Grok 4.5 | Grok 4.3 |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✓ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✗ | ✓ |
Benchmarks: Grok 4.5 vs Grok 4.3
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
How Grok 4.5 and Grok 4.3 score
| Criterion | Grok 4.5 | Grok 4.3 |
|---|---|---|
| Cost-efficiency | 4.0 | 4.5 |
| 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
Grok 4.5 Paid
Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
Grok 4.3 Paid
Grok 4.3 is a reasoning model from xAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...
Other models in these families
These variants are tracked but not compared here — one page per family keeps the comparison readable.
Frequently asked questions
Grok 4.5 vs Grok 4.3 — which is cheaper?
Grok 4.3 is cheaper on output ($2.5/M vs $6/M).
Which has the larger context window?
Grok 4.3 offers the larger context window (1M tokens).
Grok 4.5 vs Grok 4.3 — which should I pick in 2026?
Choose Grok 4.3 for the lower output price ($2.5/M vs $6/M). It also gives you the larger 1M context window.
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