Claude Fable 5 vs Grok 4 20 Non Reasoning
API pricing, context window and capabilities for Claude Fable 5 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 Fable 5 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 Fable 5
Context window
Grok 4 20 Non Reasoning
Key takeaways
who wins on what, from the published numbersClaude Fable 5 wins
- More serving providers (4 vs 1)
- Has reasoning mode
- Supports prompt caching
Grok 4 20 Non Reasoning wins
- Cheaper input ($10.00 vs $2.00 /1M)
- Cheaper output ($50.00 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 Fable 5
4 providers
Pricing & specs
cheapest serving route · per 1M tokens| Claude Fable 5 | Grok 4 20 Non Reasoning | |
|---|---|---|
| Input $/1M | $10.00 | $2.00 best |
| Output $/1M | $50.00 | $6.00 best |
| Context window | 1M | 2M best |
| Max output | 128K | 2M best |
| Serving providers | 4 best | 1 |
| Released | 2026-06-09 | 2026-03-09 |
Benchmarks
Artificial Analysis indices, side by side| Claude Fable 5 | Grok 4 20 Non Reasoning | |
|---|---|---|
| Intelligence | 59.9 best | 21.8 |
| Coding | 76.5 | Not available |
| GPQA Diamond | 93% best | 78% |
| Output speed | 46 t/s | 163 t/s best |
| Latency (TTFT) | 29.29s | 4.54s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Claude Fable 5
via Amazon Bedrock
$100
Grok 4 20 Non Reasoning
via Vertex AI
$16
Capabilities
feature support, side by side| Feature | Claude Fable 5 | 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 Fable 5 or Grok 4 20 Non Reasoning?
Grok 4 20 Non Reasoning is cheaper for input ($10.00 vs $2.00 per 1M tokens). Grok 4 20 Non Reasoning is cheaper for output ($50.00 vs $6.00 per 1M tokens).
What is the context window difference between Claude Fable 5 and Grok 4 20 Non Reasoning?
Claude Fable 5 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 Fable 5 and Grok 4 20 Non Reasoning compare on benchmarks?
On the tracked Artificial Analysis indices, Claude Fable 5 leads on intelligence.
Pricing verified against LiteLLM + OpenRouter + provider pages · refreshed daily
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