Compare Claude Fable 5 from Anthropic and Claude Opus 5 from Anthropic on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
Claude Fable 5Claude Opus 5Anthropic's most capable widely released model, for the most demanding reasoning and long-horizon agentic work（This model is extremely expensive and is not recommended for casual use.）
Claude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis of charts and documents, complex office deliverables, and coordinating parallel subagents. The model maintains strong instruction following and tool use across extended tasks, while remaining effective at lower effort settings for workloads that prioritize latency and token efficiency.
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Promotional prices show the discounted rate; see each model page for promotion windows.
Daily traffic served through AIHubMix — how demand for each model is trending.
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.
Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
Claude Opus 5: $25/M output tokens; Claude Fable 5: $55/M. Use the cost calculator above to estimate your own workload.
Claude Fable 5: 1551; Claude Opus 5: 1533 (LMArena coding leaderboard).
Claude Opus 5: 1.1s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
Claude Fable 5 accepts 1,000,000 and Claude Opus 5 accepts 1,000,000 input tokens. Maximum output per request is 128,000 tokens on Claude Fable 5 and 128,000 tokens on Claude Opus 5.
Claude Opus 5 at 77.1 tok/s and Claude Fable 5 at 68.1 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
Claude Fable 5 accepts text, image and PDF input and supports thinking, tool calling, function calling and structured outputs; Claude Opus 5 accepts text, image and PDF input and supports thinking, tool calling, structured outputs, long context and web search.
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
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