Claude Opus 4.8 vs Grok 4 20 Non Reasoning
API pricing, context window and capabilities for Claude Opus 4.8 and Grok 4 20 Non Reasoning, side by side. Prices are the cheapest serving route per 1M tokens, verified against LiteLLM and OpenRouter.
Verdict
computed from the published numbersClaude Opus 4.8 wins on intelligence. Grok 4 20 Non Reasoning wins on price and on context window. Benchmark data is unavailable for one or both models.
Price
Grok 4 20 Non Reasoning
Coding
Not called
Intelligence
Claude Opus 4.8
Context window
Grok 4 20 Non Reasoning
Key takeaways
who wins on what, from the published numbersClaude Opus 4.8 wins
- More serving providers (4 vs 1)
- Has reasoning mode
- Supports prompt caching
Grok 4 20 Non Reasoning wins
- Cheaper input ($5.00 vs $2.00 /1M)
- Cheaper output ($25.00 vs $6.00 /1M)
- Larger context window (1M vs 2M)
- Higher max output (128K vs 2M)
- Has web search
Cheaper overall
Grok 4 20 Non Reasoning
$2.00 + $6.00 /1M
Larger context
Grok 4 20 Non Reasoning
2M
More providers
Claude Opus 4.8
4 providers
Pricing & specs
cheapest serving route · per 1M tokens| Claude Opus 4.8 | Grok 4 20 Non Reasoning | |
|---|---|---|
| Input $/1M | $5.00 | $2.00 best |
| Output $/1M | $25.00 | $6.00 best |
| Context window | 1M | 2M best |
| Max output | 128K | 2M best |
| Serving providers | 4 best | 1 |
| Released | 2026-05-28 | 2026-03-09 |
Benchmarks
Artificial Analysis indices, side by side| Claude Opus 4.8 | Grok 4 20 Non Reasoning | |
|---|---|---|
| Intelligence | 55.7 best | 21.8 |
| Coding | 74.3 | Not available |
| GPQA Diamond | 92% best | 78% |
| Output speed | 68 t/s | 163 t/s best |
| Latency (TTFT) | 38.57s | 4.54s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Claude Opus 4.8
via Amazon Bedrock
$50
Grok 4 20 Non Reasoning
via Vertex AI
$16
Capabilities
feature support, side by side| Feature | Claude Opus 4.8 | Grok 4 20 Non Reasoning |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | — |
| Audio | — | — |
| Prompt caching | ✓ | — |
| Structured output | ✓ | ✓ |
| Web search | — | ✓ |
Related comparisons
Frequently asked questions
Which is cheaper, Claude Opus 4.8 or Grok 4 20 Non Reasoning?
Grok 4 20 Non Reasoning is cheaper for input ($5.00 vs $2.00 per 1M tokens). Grok 4 20 Non Reasoning is cheaper for output ($25.00 vs $6.00 per 1M tokens).
What is the context window difference between Claude Opus 4.8 and Grok 4 20 Non Reasoning?
Claude Opus 4.8 has a 1M-token context window and Grok 4 20 Non Reasoning has 2M tokens, so Grok 4 20 Non Reasoning can take a larger prompt.
How do Claude Opus 4.8 and Grok 4 20 Non Reasoning compare on benchmarks?
On the tracked Artificial Analysis indices, Claude Opus 4.8 leads on intelligence.
Pricing verified against LiteLLM + OpenRouter + provider pages · refreshed daily
Every weekday
AI moves fast. Here's your debrief.
News, analysis, tools, and more.
For people who build with AI