Pairwise benchmark snapshot · Aug 16, 2026
In this head-to-head showdown, Claude Fable 5 delivers higher overall intelligence and human-preferred responses (Elo 1,616 vs 1,248), while Claude Fable 5 leads in SWE-bench software engineering benchmarks (80%), while Claude Fable 5 is more budget-friendly at $50/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
9 direct benchmark disciplines evaluated across capability, speed, and cost
Original Claude 3 flagship. Kept so opus 3 vs later Opus and vs GPT-4o still resolve.
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).
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 368 Arena Elo pts
58 tok/s
$50 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Comparing top Western standard models with China's leading frontier rival across 6 skill 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 3 Opus | Claude Fable 5 | Advantage Delta |
|---|---|---|---|
| Preference Elo | +368 | ||
| Coding Elo | — | — | |
| LiveBench | +29% | ||
| SWE-bench | +41.6% | ||
| GPQA Diamond | +37.2% | ||
| Time to first token | +80 ms | ||
| Output speed | 48 tok/s | 58 tok/s | +10 tok/s |
| Input price | +$5/1M | ||
| Output price | +$25/1M | ||
| Context window | +800k |
Simulate monthly production API costs in USD (US Dollar).
Claude Fable 5 is estimated to save $550.00/month ($6,600/year).
Higher SWE-bench (80%).
Lower output list price ($50/1M).
Lower TTFT (340 ms).
Larger window (1M).
Both accept images. Defaulting to the higher-Elo side (Claude Fable 5).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude Fable 5 | Higher SWE-bench (80%). |
| High-volume chat | Claude Fable 5 | Lower output list price ($50/1M). |
| Voice / low-latency UI | Claude Fable 5 | Lower TTFT (340 ms). |
| Long-document RAG | Claude Fable 5 | Larger window (1M). |
| Screenshots / vision | Claude Fable 5 | Both accept images. Defaulting to the higher-Elo side (Claude Fable 5). |
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Verified Head-to-Head Telemetry
