Claude Fable 5 vs Claude Opus 5
At a Glance
| Compare | Claude Fable 5Anthropic | Claude Opus 5Anthropic |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v2.5 | #2 of 4695.6 score · 3/3 sources · complete | #3 of 4694.1 score · 3/3 sources · complete |
| CostLower is better · Published-token output estimate | #44 of 44$1.01 per LiveBench case | #39 of 44$0.371 per LiveBench case |
| EfficiencyHigher is better · MM Efficiency v1.5 | #29 of 3847.8 score · 3/3 sources · complete | #13 of 3857.6 score · 3/3 sources · complete |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $10.00Anthropic ↗ · Sep 3, 2026 | $5.00Anthropic ↗ · Sep 3, 2026 |
| Output priceFrom · USD / 1M tokens | $50.00Anthropic ↗ · Sep 3, 2026 | $25.00Anthropic ↗ · Sep 3, 2026 |
| Context windowMaximum documented tokens | 1,000K | 1,000K |
| Model facts checked | Aug 28, 2026View model evidence → | Aug 28, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
| Benchmark | Claude Fable 5 | Claude Opus 5 |
|---|---|---|
| ARC-AGI-1verified-v1-ba05d69f6453 · verified_score · leader | 98.50100% of row best · percent · Claude Fable 5 (XHigh) | 97.5099% of row best · percent · Claude Opus 5 (Max) |
| ARC-AGI-2verified-v2-6c676fa3e9af · verified_score · leader | 89.1799% of row best · percent · Claude Fable 5 (Max) | 90.42100% of row best · percent · Claude Opus 5 (Max) |
| LMArena Agent Arenaagent-2026-09-15-d25aabda0010 · outcome_score · statistical tie | 8.8199% of row best · score · Claude Fable 5 (High); 95% CI [7.56791873, 10.05963763]; sessions 38293; observations 2061291; rank 5 | 10.16100% of row best · score · Claude Opus 5 (Max); 95% CI [8.61078356, 11.71492901]; sessions 19934; observations 2534849; rank 4 |
| LMArena Document Arenadocument-2026-09-13-d25aabda0010 · arena_rating · leader | 1,496.0899% of row best · rating · claude-fable-5; 95% CI [1488.22135990, 1503.94311259]; votes 8497; rank 5 | 1,516.27100% of row best · rating · claude-opus-5-high; 95% CI [1509.24512533, 1523.28765667]; votes 8794; rank 1 |
| LMArena Text Arenatext-2026-09-13-d25aabda0010 · arena_rating · leader | 1,492.6399% of row best · rating · claude-fable-5; 95% CI [1487.86770992, 1497.38399139]; votes 30057; rank 7 | 1,504.92100% of row best · rating · claude-opus-5-high; 95% CI [1500.70174969, 1509.13092375]; votes 42617; rank 3 |
| LMArena Vision Arenavision-2026-09-13-d25aabda0010 · arena_rating · statistical tie | 1,325.86100% of row best · rating · claude-fable-5; 95% CI [1317.96760009, 1333.76174084]; votes 11304; rank 1 | 1,321.21100% of row best · rating · claude-opus-5-high; 95% CI [1313.68410123, 1328.73941303]; votes 11599; rank 3 |
| LiveBench2026-06-25 · overall · leader | 86.55100% of row best · percent · claude-fable-5-max-effort · 20,255 output tokens / case | 83.4496% of row best · percent · claude-opus-5-max-effort · 14,826 output tokens / case |
| ToneBench2026-09-11-10-task-4ef099199c9c · overall_score · unverified | 89.06100% of row best · points · Claude Fable 5 (xhigh) · 18,129 output tokens / case | 88.76100% of row best · points · Claude Opus 5 (max effort) · 9,446 output tokens / case |
| Overall ResultCounted from the protocol-matched rows above · 2 ties | 2 benchmark wins | 3 benchmark winsOverall lead |
Third-party benchmark Only like-for-like primary-publisher results are shown; raw scores, relative scores, configuration, and token spend remain visible.
Side-by-Side Facts
| Field | Claude Fable 5 | Claude Opus 5 |
|---|---|---|
| Developer | Anthropic | Anthropic |
| Family | Claude 5 | Claude 5 |
| Model | Claude Fable 5 | Claude Opus 5 |
| Version | Claude Fable 5 | Claude Opus 5 |
| Lifecycle | active | active |
| Released | 2026-06-09 | 2026-07-24 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |
| Context window | 1,000K | 1,000K |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | Unknown |
| Open weights | No | No |
| API available | Yes | Yes |
| Self-hostable | No | No |
| Provider access | Anthropic (Standard), Deepinfra (Standard), Openrouter (Standard) | Anthropic (Standard), Deepinfra (Standard), Openrouter (Standard) |
| Capabilities | chat, generation, reasoning, tools | chat, generation, reasoning, tools |
Claude Fable 5 Capabilities
Claude Opus 5 Capabilities
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Claude Fable 5Anthropic | vs | Seed 2.1 ProByteDance Seed | cross-developer peersimage, text |
Primary Evidence
Sources and Freshness
Questions
Claude Fable 5 vs Claude Opus 5 FAQs
Is Claude Fable 5 or Claude Opus 5 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Claude Fable 5 and Claude Opus 5, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Claude Fable 5 or Claude Opus 5?+
Claude Fable 5 is $10.00 and Claude Opus 5 is $5.00 per million tokens, so Claude Opus 5 is cheaper on this metric. Claude Fable 5 is $50.00 and Claude Opus 5 is $25.00 per million tokens, so Claude Opus 5 is cheaper on this metric.
Which has a larger context window, Claude Fable 5 or Claude Opus 5?+
Neither model has a larger sourced context window in this comparison. Claude Fable 5 is 1,000K and Claude Opus 5 is 1,000K.
Which performs better in benchmarks, Claude Fable 5 or Claude Opus 5?+
Claude Opus 5 leads the current overall benchmark count. The result uses 7 protocol-matched benchmarks from 3 publishers; it is not a universal quality score.
Can Claude Fable 5 or Claude Opus 5 be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. Claude Fable 5 is not marked open weight; Claude Opus 5 is not marked open weight.
Can Claude Fable 5 and Claude Opus 5 understand images?+
Claude Fable 5 is documented with image input; Claude Opus 5 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Claude Fable 5 or Claude Opus 5?+
Neither has a larger sourced maximum output. Claude Fable 5 is 128K and Claude Opus 5 is 128K.
Do Claude Fable 5 and Claude Opus 5 support reasoning and tool use?+
Claude Fable 5: reasoning, tool calling, and image input. Claude Opus 5: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Claude Fable 5 or Claude Opus 5?+
Claude Fable 5 has 3 sourced provider routes; Claude Opus 5 has 3, a tie.
Which offers better value, Claude Fable 5 or Claude Opus 5?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.