Claude Fable 5.2 vs Grok 4.7
Official Anthropic and xAI 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.
Grok 4.7 costs less; quality is n/a.
Grok 4.7 is 4x cheaper on input and 6.7x cheaper on output. LMArena has no task both models are ranked on, so quality is n/a here. Claude Fable 5.2 has the longer context window (1M vs 500K tokens). A medium month (20M input + 5M output tokens) costs $360 on Claude Fable 5.2 and $70 on Grok 4.7.
- Pick Claude Fable 5.2 if you need the 1M context window or you reuse long prompts (cached input $0.20 vs $0.50).
- Pick Grok 4.7 if you want the lower bill ($70 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 | Grok 4.7 |
|---|---|---|
| Price per 1M tokens | ||
| Input | $8 | $2 |
| Cached input | $0.20 | $0.50 |
| Output | $40 | $6 |
| Blend 3:1 | $16 | $3 |
| Sample month, medium | $360 | $70 |
| Context | ||
| Context window | 1M tokens | 500K tokens |
| Quality (LMArena, out of 100) | ||
| Coding | Not ranked | 35/100 #16 of 50 |
| Chat | Not ranked | 0/100 #37 of 51 |
| Creative writing | Not ranked | 0/100 #32 of 51 |
| Roleplay and characters | Not ranked | 0/100 #42 of 51 |
| Reasoning and math | Not ranked | 0/100 #36 of 51 |
| Vision | Not ranked | 0/100 #21 of 33 |
| Long documents | Not ranked | Not ranked |
| Cheap bulk and agents | Not ranked | 43/100 #12 of 37 |
| Details | ||
| Provider | Anthropic | xAI |
| API model id | claude-fable-5.2 | grok-4.7 |
| Notes | Released Nov 9, 2026. 128K max output. 5-minute cache writes $10. Fast mode $16 in, $80 out. | Prompts under 200K. Longer prompts cost $4 in, $12 out. |
| Sources | ||
| Last checked | 2026-11-09 | 2026-11-09 |
| Official pricing | Anthropic pricing | xAI 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, Grok 4.7 #16 of 50 (35/100)
- Chat (Text Arena): Claude Fable 5.2 not ranked, Grok 4.7 #37 of 51 (0/100)
- Creative writing (Text Arena creative writing): Claude Fable 5.2 not ranked, Grok 4.7 #32 of 51 (0/100)
- Roleplay and characters (Text Arena multi-turn): Claude Fable 5.2 not ranked, Grok 4.7 #42 of 51 (0/100)
- Reasoning and math (Text Arena math): Claude Fable 5.2 not ranked, Grok 4.7 #36 of 51 (0/100)
- Vision (Vision Arena): Claude Fable 5.2 not ranked, Grok 4.7 #21 of 33 (0/100)
- Long documents (Document Arena): Claude Fable 5.2 not ranked, Grok 4.7 not ranked
- Cheap bulk and agents (Agent Arena): Claude Fable 5.2 not ranked, Grok 4.7 #12 of 37 (43/100)
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. Grok 4.7 lists $2 input, $6 output, $0.50 cached input per 1M tokens on xAI 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.
- Grok 4.7: Prompts under 200K. Longer prompts cost $4 in, $12 out.
Sample monthly bill at list price, no caching: Light (2M input + 0.5M output tokens): $36 vs $7. Medium (20M input + 5M output tokens): $360 vs $70. Heavy (200M input + 50M output tokens): $3,600 vs $700.
FAQ
Is Claude Fable 5.2 cheaper than Grok 4.7?
Claude Fable 5.2 costs $8 input and $40 output per 1M tokens; Grok 4.7 costs $2 and $6. For a medium month (20M input + 5M output tokens) Grok 4.7 is cheaper: $70 vs $360.
Which is better for coding, Claude Fable 5.2 or Grok 4.7?
Code Arena score: Claude Fable 5.2 n/a (not ranked), Grok 4.7 35/100. We do not guess missing scores.
Which has the bigger context window?
Claude Fable 5.2: 1M tokens. Grok 4.7: 500K tokens. Long prompts can cost more; see the pricing notes above.
How much do Claude Fable 5.2 and Grok 4.7 cost per month?
Light (2M input + 0.5M output tokens): $36 vs $7. Medium (20M input + 5M output tokens): $360 vs $70. Heavy (200M input + 50M output tokens): $3,600 vs $700. 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
- Grok API pricing explained
- Anthropic API pricing, every model
- xAI API pricing, every model
- Claude Fable 5.2 vs Claude Fable 5.1
- Claude Fable 5.2 vs GPT-6 Astra
- Claude Fable 5.2 vs Claude Opus 5.5
- Claude Fable 5.2 vs Gemini 4 Argon
- Claude Fable 5.2 vs Claude Sonnet 5.5
- Grok 4.7 vs GPT-6.1 Sol
- Grok 4.7 vs Claude Opus 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
- Fable 5.2 vs Opus 5.5