API cost decision in 10 seconds
Grok 4.3 vs 🔥Claude Opus 4.6
Pick Grok 4.3 when budget is the priority.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Grok 4.3 when budget is the priority.
On the standard 1M input plus 500K output workload, Grok 4.3 is estimated at $2.5 vs $17.5 for Claude Opus 4.6, saving $15 (85.7% lower).
Cost-first pickGrok 4.3
Context-first pickTie
Sample savings$1585.7%
10x traffic gap$150
The reported context window is tied, so cost and provider fit carry more weight. At 10x that traffic, the same price gap is about $150. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Grok 4.3 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Grok 4.3 | Claude Opus 4.6 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Grok 4.3 | $7.5 | $37.5 |
| Balanced workload | 1M input + 1M output | Grok 4.3 | $3.75 | $30 |
| Output-heavy chatbot | 1M input + 5M output | Grok 4.3 | $13.75 | $130 |
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Grok 4.3 has the lower input price, Grok 4.3 has the lower output price, and Tie offers the larger context window.
For a 1M input token plus 500K output token workload, the estimated API cost is $2.5 for Grok 4.3 and $17.5 for Claude Opus 4.6.
Choose Grok 4.3 when you care most about lower input-token price, and lower output-token price.
Choose Claude Opus 4.6 when its provider, model quality, latency, or availability is more important than the numeric price/context winner.
| Feature | Grok 4.3 (xAI) | 🔥Claude Opus 4.6 (Anthropic) |
|---|---|---|
| Input Price prompt tokens per 1M | $1.25 | $5 |
| Completion Price per 1M tokens | $2.5 | $25 |
| Sample Workload Cost 1M input + 500K output | $2.5 | $17.5 |
| Context Window | 1M | 1M |
| Release Date | 2026-04-30 | 2026-02-04 |
| Popularity | #18 |
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...
Opus 4.6 is Anthropic’s strongest model for coding and long-running professional tasks. It is built for agents that operate across entire workflows rather than single prompts, making it especially effective...
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Grok 4.3 | On the standard 1M input plus 500K output workload, Grok 4.3 is estimated at $2.5 vs $17.5 for Claude Opus 4.6, saving $15 (85.7% lower). |
| High-volume input processing | Grok 4.3 | Lower prompt-token price matters most when prompts or retrieved passages dominate the bill. |
| Long responses and chatbots | Grok 4.3 | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Tie | A larger context window leaves more room for retrieved passages and source files. |