Claude Fable 5.2 vs Claude Opus 5.5
Official Anthropic API prices and LMArena scores, checked 2026-11-09. Add up to 2 more models to compare 4.
Claude Fable 5.2 and Mythos 5.2 launched Nov 9, 2026. Read Claude Fable 5.2 and Mythos 5.2: prices, limits and what changed.
Claude Opus 5.5 costs less; quality is n/a.
Claude Opus 5.5 is 2x cheaper on input and output. LMArena has no task both models are ranked on, so quality is n/a here. A medium month (20M input + 5M output tokens) costs $360 on Claude Fable 5.2 and $180 on Claude Opus 5.5.
- Pick Claude Fable 5.2 if nothing here clearly favors it (no lower bill, bigger context, cheaper cache or LMArena lead of 3+ points over Claude Opus 5.5).
- Pick Claude Opus 5.5 if you want the lower bill ($180 vs $360 for a medium month).
Medium: 20M input + 5M output tokens a month at list price (short-context rate, no caching or batch discounts).
Marked side is better: lower for prices, higher for context and scores. Bars are scaled to the larger of the two.
| Spec | Claude Fable 5.2 | Claude Opus 5.5 |
|---|---|---|
| Price per 1M tokens | ||
| Input | $8 | $4 |
| Cached input | $0.20 | $0.20 |
| Output | $40 | $20 |
| Blend 3:1 | $16 | $8 |
| Sample month, medium | $360 | $180 |
| Context | ||
| Context window | 1M tokens | 1M tokens |
| Quality (LMArena, out of 100) | ||
| Coding | Not ranked | 100/100 #1 of 50 |
| Chat | Not ranked | 70/100 #3 of 51 |
| Creative writing | Not ranked | 89/100 #2 of 51 |
| Roleplay and characters | Not ranked | 36/100 #5 of 51 |
| Reasoning and math | Not ranked | 83/100 #5 of 51 |
| Vision | Not ranked | 91/100 #2 of 33 |
| Long documents | Not ranked | Not ranked |
| Cheap bulk and agents | Not ranked | 100/100 #1 of 37 |
| Details | ||
| Provider | Anthropic | Anthropic |
| API model id | claude-fable-5.2 | claude-opus-5.5 |
| Notes | Released Nov 9, 2026. 128K max output. 5-minute cache writes $10. Fast mode $16 in, $80 out. | 5-minute cache writes $5. |
| Sources | ||
| Last checked | 2026-11-09 | 2026-11-09 |
| Official pricing | Anthropic pricing | Anthropic pricing |
Plans from data checked hourly against each vendor's official pricing page. Vendors state limits in different units, so we quote them as published. Team and enterprise plans are per seat.
API prices in USD per 1M tokens from each provider's official pricing page. Blend 3:1 = (3 x input + output) / 4. Sample month = stated input and output tokens at the list price, no caching. Quality: relative score out of 100 on each LMArena leaderboard (100 = top model we price on that board, n/a = not ranked there), data licensed CC BY 4.0. See how we pick.
Where each one ranks on LMArena
Relative score out of 100 on each leaderboard (100 = the top model we price there), with the rank among the models from our API price table that appear on that board.
- Coding (Code Arena): Claude Fable 5.2 not ranked, Claude Opus 5.5 #1 of 50 (100/100)
- Chat (Text Arena): Claude Fable 5.2 not ranked, Claude Opus 5.5 #3 of 51 (70/100)
- Creative writing (Text Arena creative writing): Claude Fable 5.2 not ranked, Claude Opus 5.5 #2 of 51 (89/100)
- Roleplay and characters (Text Arena multi-turn): Claude Fable 5.2 not ranked, Claude Opus 5.5 #5 of 51 (36/100)
- Reasoning and math (Text Arena math): Claude Fable 5.2 not ranked, Claude Opus 5.5 #5 of 51 (83/100)
- Vision (Vision Arena): Claude Fable 5.2 not ranked, Claude Opus 5.5 #2 of 33 (91/100)
- Long documents (Document Arena): Claude Fable 5.2 not ranked, Claude Opus 5.5 not ranked
- Cheap bulk and agents (Agent Arena): Claude Fable 5.2 not ranked, Claude Opus 5.5 #1 of 37 (100/100)
Pricing details from the official pages
Claude Fable 5.2 lists $8 input, $40 output, $0.20 cached input per 1M tokens on Anthropic pricing. Claude Opus 5.5 lists $4 input, $20 output, $0.20 cached input per 1M tokens on Anthropic pricing. Prices checked 2026-11-09.
- Claude Fable 5.2: Released Nov 9, 2026. 128K max output. 5-minute cache writes $10. Fast mode $16 in, $80 out.
- Claude Opus 5.5: 5-minute cache writes $5.
Sample monthly bill at list price, no caching: Light (2M input + 0.5M output tokens): $36 vs $18. Medium (20M input + 5M output tokens): $360 vs $180. Heavy (200M input + 50M output tokens): $3,600 vs $1,800.
FAQ
Is Claude Fable 5.2 cheaper than Claude Opus 5.5?
Claude Fable 5.2 costs $8 input and $40 output per 1M tokens; Claude Opus 5.5 costs $4 and $20. For a medium month (20M input + 5M output tokens) Claude Opus 5.5 is cheaper: $180 vs $360.
Which is better for coding, Claude Fable 5.2 or Claude Opus 5.5?
Code Arena score: Claude Fable 5.2 n/a (not ranked), Claude Opus 5.5 100/100. We do not guess missing scores.
Which has the bigger context window?
Claude Fable 5.2: 1M tokens. Claude Opus 5.5: 1M tokens. Both list the same window.
How much do Claude Fable 5.2 and Claude Opus 5.5 cost per month?
Light (2M input + 0.5M output tokens): $36 vs $18. Medium (20M input + 5M output tokens): $360 vs $180. Heavy (200M input + 50M output tokens): $3,600 vs $1,800. Pick your own token counts in the plan vs API calculator.
Where do these numbers come from?
Prices come from each provider's official pricing page, checked daily. Quality is the relative score on the LMArena leaderboard dataset, licensed CC BY 4.0. Where a model is not ranked we show n/a.
Sources
Related
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- Claude Opus 5.5 vs Claude Sonnet 5.5
- Claude Fable 5.2 vs Claude Fable 5.1
- Claude Fable 5.2 vs GPT-6 Astra
- Claude Fable 5.2 vs Gemini 4 Argon
- Claude Fable 5.2 vs Grok 4.7
- Claude Fable 5.2 vs Claude Sonnet 5.5
Fable 5.2 coverage
- Launch guide: prices, limits, what changed
- Benchmarks vs GPT-6 Astra and Gemini
- Is Fable 5.2 free? How to get it
- Is Claude Pro enough? Limits by plan
- Fable 5.2 vs Mythos 5.2
- Fable 5.1 vs 5.2: should you upgrade
- Fable 5.2 in Claude Code
- Fast mode pricing
- Context window and max output
- API cost calculator
- Fable 5.2 API price
- Mythos 5.2 API price
- Fable 5.2 vs GPT-6 Astra