Claude Sonnet 4.6 Paid vs 
Grok 4.5 Paid
Claude Sonnet 4.6 vs Grok 4.5 compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
Claude Sonnet 4.6 — full profile › · Grok 4.5 — full profile ›
Prices & specs refreshed from live data · OpenSourceAI.tech
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
Claude Sonnet 4.6 vs Grok 4.5 specs
| Spec | Claude Sonnet 4.6 | Grok 4.5 |
|---|---|---|
| Maker | Anthropic | xAI |
| Type | Proprietary | Proprietary |
| Context window | 1M tokens | 500K tokens |
| Input price | $3/M | $2/M |
| Output price | $15/M | $6/M |
| Vision / multimodal | Yes | Yes |
| Tool / function calling | Yes | Yes |
| Self-hostable | No (API only) | No (API only) |
| License | Proprietary | Proprietary |
Feature comparison
| Capability | Claude Sonnet 4.6 | Grok 4.5 |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✓ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✓ | ✗ |
Benchmarks: Claude Sonnet 4.6 vs Grok 4.5
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
How Claude Sonnet 4.6 and Grok 4.5 score
| Criterion | Claude Sonnet 4.6 | Grok 4.5 |
|---|---|---|
| Cost-efficiency | 3.0 | 4.0 |
| Context window | 5.0 | 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.
What each model is
Claude Sonnet 4.6 Paid
Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with...
Grok 4.5 Paid
Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
Other models in these families
These variants are tracked but not compared here — one page per family keeps the comparison readable.
Frequently asked questions
Claude Sonnet 4.6 vs Grok 4.5 — which is cheaper?
Grok 4.5 is cheaper on output ($6/M vs $15/M).
Which has the larger context window?
Claude Sonnet 4.6 offers the larger context window (1M tokens).
Claude Sonnet 4.6 vs Grok 4.5 — which should I pick in 2026?
Choose Grok 4.5 for the lower output price ($6/M vs $15/M). Choose Claude Sonnet 4.6 if you need the larger 1M context window.
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