Claude Fable 5.1 vs DeepSeek V4.1 Flash
API pricing, context window and capabilities for Claude Fable 5.1 and DeepSeek V4.1 Flash, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersClaude Fable 5.1 wins on intelligence. DeepSeek V4.1 Flash wins on price. Benchmark data is unavailable for one or both models.
Price
DeepSeek V4.1 Flash
Terminal-Bench
Not called
Intelligence
Claude Fable 5.1
Context window
Tied
Key takeaways
who wins on what, from the published numbersClaude Fable 5.1 wins
- Has web search
DeepSeek V4.1 Flash wins
- Cheaper input ($10.00 vs $0.01 /1M)
- Cheaper output ($50.00 vs $0.60 /1M)
- Higher max output (128K vs 1M)
- More serving providers (7 vs 12)
Cheaper overall
DeepSeek V4.1 Flash
$0.01 + $0.60 /1M
Larger context
Tied
More providers
DeepSeek V4.1 Flash
12 providers
Pricing & specs
cheapest listed route · per 1M tokensOn-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments can be materially lower.
| Claude Fable 5.1 | DeepSeek V4.1 Flash | |
|---|---|---|
| Input $/1M | $10.00via Anthropic | $0.01via Coralbricks best |
| Output $/1M | $50.00via Anthropic | $0.60via Sail best |
| Context window | 1M | 1M |
| Max output | 128K | 1M best |
| Serving providers | 7 | 12 best |
| Date | Released Sep 1, 2026 | Released Sep 10, 2026 |
Benchmarks
Benchmark scores, side by side| Claude Fable 5.1 | DeepSeek V4.1 Flash | |
|---|---|---|
| Intelligence | 53.4 best | 39.5 |
| Terminal-Bench | 91% | Not available |
| GPQA Diamond | 94% | Not available |
| Output speed | 71 t/s | 187 t/s best |
| Latency (TTFT) | 249.68s | 0.96s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Claude Fable 5.1
via Amazon Bedrock
$100
DeepSeek V4.1 Flash
via Coralbricks
$1.25
Capabilities
feature support, side by side| Feature | Claude Fable 5.1 | DeepSeek V4.1 Flash |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | ✓ | — |
Related comparisons
Frequently asked questions
Which is cheaper, Claude Fable 5.1 or DeepSeek V4.1 Flash?
DeepSeek V4.1 Flash is cheaper for input ($10.00 vs $0.01 per 1M tokens) from Coralbricks. DeepSeek V4.1 Flash is cheaper for output ($50.00 vs $0.60 per 1M tokens) from Sail.
What is the context window difference between Claude Fable 5.1 and DeepSeek V4.1 Flash?
Both Claude Fable 5.1 and DeepSeek V4.1 Flash have about a 1M-token context window.
How do Claude Fable 5.1 and DeepSeek V4.1 Flash compare on benchmarks?
On the tracked benchmarks, Claude Fable 5.1 leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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