Claude Fable 5 vs Nemotron 3.5 Lightning
| Signal | Claude Fable 5 | Delta | Nemotron 3.5 Lightning |
|---|---|---|---|
Capabilities | 100 | +33 | |
Benchmarks | 85 | +85 | |
Pricing | 50 | -50 | |
Context window size | 95 | +9 | |
Recency | 100 | -- | |
Output Capacity | 82 | -4 | |
| Overall Result | 3 wins | of 6 | 2 wins |
Score History
95.9
current score
Claude Fable 5
right now
40
current score
Claude Fable 5
Anthropic
Nemotron 3.5 Lightning
NVIDIA
Nemotron 3.5 Lightning saves you $3483.00/month
That's $41796.00/year compared to Claude Fable 5 at your current usage level of 100K calls/month.
| Metric | Claude Fable 5 | Nemotron 3.5 Lightning | Winner |
|---|---|---|---|
| Overall Score | 96 | 40 | Claude Fable 5 |
| Rank | #3 | #274 | Claude Fable 5 |
| Quality Rank | #3 | #274 | Claude Fable 5 |
| Adoption Rank | #3 | #274 | Claude Fable 5 |
| Parameters | -- | -- | -- |
| Context Window | 1000K | 262K | Claude Fable 5 |
| Pricing | $10.00/$50.00/M | $0.07/$0.20/M | -- |
| Signal Scores | |||
| Capabilities | 100 | 67 | Claude Fable 5 |
| Benchmarks | 85 | -- | Claude Fable 5 |
| Pricing | 50 | 100 | Nemotron 3.5 Lightning |
| Context window size | 95 | 86 | Claude Fable 5 |
| Recency | 100 | 100 | Claude Fable 5 |
| Output Capacity | 82 | 86 | Nemotron 3.5 Lightning |
Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.
Scores 96/100 (rank #3), placing it in the top 99% of all 290 models tracked.
Scores 40/100 (rank #274), placing it in the top 6% of all 290 models tracked.
Claude Fable 5 has a 56-point advantage, which typically translates to noticeably stronger performance on complex reasoning, code generation, and multi-step tasks.
Choose Claude Fable 5 when you need:
- Processing long documents or large codebases (1000K token context)
- Multimodal workflows that require image understanding
- Step-by-step reasoning and chain-of-thought problem solving
Choose Nemotron 3.5 Lightning when you need:
- High-volume production workloads where API costs must be minimized
- Step-by-step reasoning and chain-of-thought problem solving
- Self-hosted deployments where you need full control over the model
Nemotron 3.5 Lightning offers 100% better value per quality point. At 1M tokens/day, you'd spend $4.05/month with Nemotron 3.5 Lightning vs $900.00/month with Claude Fable 5 - a $895.95 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Suitable for user-facing chat with competitive response times. Nemotron 3.5 Lightning also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (1000K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.20/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (96/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
Claude Fable 5 clearly outperforms Nemotron 3.5 Lightning with a significant 55.900000000000006-point lead. For most general use cases, Claude Fable 5 is the stronger choice. However, Nemotron 3.5 Lightning may still excel in niche scenarios.
By Use Case
Best for Quality
Claude Fable 5
Marginally better benchmark scores; both are excellent
Best for Cost
Nemotron 3.5 Lightning
100% lower pricing; better value at scale
Best for Reliability
Claude Fable 5
Higher uptime and faster response speeds
Best for Prototyping
Claude Fable 5
Stronger community support and better developer experience
Best for Production
Claude Fable 5
Wider enterprise adoption and proven at scale
by Anthropic
- Choose for Quality - Marginally better benchmark scores; both are excellent
- Choose for Reliability - Higher uptime and faster response speeds
- Choose for Prototyping - Stronger community support and better developer experience
- Choose for Production - Wider enterprise adoption and proven at scale
| Capability | Claude Fable 5 | Nemotron 3.5 Lightning |
|---|---|---|
| Vision (Image Input)differs | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Searchdiffers | ||
| Image Output |
Claude Fable 5
Anthropic
Nemotron 3.5 Lightning
NVIDIA
Nemotron 3.5 Lightning saves you $77.63/month
That's 100% cheaper than Claude Fable 5 at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | Claude Fable 5 | Nemotron 3.5 Lightning |
|---|---|---|
| Context Window | 1M | 262K |
| Max Output Tokens | 128,000 | 235,929 |
| Open Source | No | Yes |
| Created | Jun 9, 2026 | Aug 11, 2026 |