Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, Claude Fable 5 delivers higher overall intelligence and human-preferred responses (Elo 1,616 vs 1,490), while Claude Fable 5 leads in SWE-bench software engineering benchmarks (80%), while DeepSeek V4 Flash is more budget-friendly at $0.28/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
10 benchmarks evaluated across capability, speed, and cost
Anthropic top-tier X-High reasoning model engineered for heavy multi-step tasks. Official API $10/$50 per 1M tokens (Claude Platform pricing, Aug 2026).
DeepSeek Jul 31 2026 price-performance SKU. Public listings put it near $0.14/$0.28 per 1M tokens.
Currently comparing Claude Fable 5 vs DeepSeek V4 Flash. Alternative family tiers available.
Simulate accuracy gains vs added response time & token cost
Reasoning models “think before answering” by generating internal reasoning tokens. Higher effort improves math, coding, and logic accuracy, but increases response delay and token costs.
Δ 126 Arena Elo pts
142 tok/s
$0.28 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Comparing top standard models across 6 key capability dimensions. Tap any spoke or dot to inspect.
Category wins across reasoning intelligence, generation speed, and token cost.
Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy
Generation throughput and time to first token responsiveness
Cost per million tokens and max context window length
| Benchmark | Claude Fable 5 | DeepSeek V4 Flash | Advantage Delta |
|---|---|---|---|
| Preference Elo | +126 | ||
| Coding Elo | +106 | ||
| LiveBench | +7.4% | ||
| SWE-bench | +8.8% | ||
| GPQA Diamond | +6% | ||
| Time to first token | +175 ms | ||
| Output speed | 58 tok/s | 142 tok/s | +84 tok/s |
| Input price | $0.14/1M | +$9.86/1M | |
| Output price | $0.28/1M | +$49.72/1M | |
| Context window | +311k |
Simulate monthly production API costs in USD (US Dollar).
DeepSeek V4 Flash is estimated to save $1,090.90/month ($13,091/year).
Higher SWE-bench (80%).
Lower output list price ($0.28/1M).
Lower TTFT (165 ms).
Larger window (1.3M).
Claude Fable 5 is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude Fable 5 | Higher SWE-bench (80%). |
| High-volume chat | DeepSeek V4 Flash | Lower output list price ($0.28/1M). |
| Voice / low-latency UI | DeepSeek V4 Flash | Lower TTFT (165 ms). |
| Long-document RAG | DeepSeek V4 Flash | Larger window (1.3M). |
| Screenshots / vision | Claude Fable 5 | Claude Fable 5 is the side marked multimodal in the catalog. |
Public listings put Flash near $0.14/$0.28 per 1M. That is a batch SKU, not a chatbot crown.
Fable 5 is Anthropic's top-tier X-High reasoning tier. Read SWE-bench and output price together.
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