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GLM-5.2 vs Claude Fable 5
Claude Fable 5 scores higher than GLM-5.2 on both public leaderboards that rate them. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, GLM-5.2 is at 31.4 and Claude Fable 5 at 60.4 (out of 100). On each maker's API, GLM-5.2 costs $1.40 / $4.40 per 1M tokens (input / output) and Claude Fable 5 $10 / $50.
Scores as published by each board; table composed November 8, 2026.
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Leaderboard by leaderboard
| Board | GLM-5.2 | Claude Fable 5 | Higher |
|---|---|---|---|
| LMArena Elo (community votes) | 1,606.4 | 1,625 | Claude Fable 5 |
| SimpleBench AVG@5 % (private set) | 58.8 | 81.9 | Claude Fable 5 |
Raw scores are each board's own scale, so compare within a row, not across rows. Full table: the bench index.
For coding
On the ArtificialWatch coding index, GLM-5.2 is at 28.3 (#35 of 45) and Claude Fable 5 at 88.1 (#5). Claude Fable 5 scores higher on both coding boards that rate them.
| Coding board | GLM-5.2 | Claude Fable 5 |
|---|---|---|
| LMArena · Coding | 1,487.8 | 1,518.7 |
| Vals Vibe Code Bench | 64 | 90.4 |
GLM-5.2 at a glance
- Developer
- Zhipu AI
- Status
- Live since June 16, 2026
- API price
- $1.40 input / $4.40 output per 1M tokens · Z.AI, glm-5.2
- Context window
- 1M tokens
Live — $0.40/$2.52 per 1M · no longer the current shipped GLM: 5.3 landed Aug 14 and 5.3 Flash Aug 26.
Claude Fable 5 at a glance
- Developer
- Anthropic
- Status
- Live since July 1, 2026
- API price
- $10 input / $50 output per 1M tokens · Anthropic, claude-fable-5
- Context window
- 1M tokens
Returned Jul 1.
GLM-5.2 vs Claude Fable 5: quick answers
Which is better, GLM-5.2 or Claude Fable 5?
It depends on what you measure. Claude Fable 5 scores higher than GLM-5.2 on both public leaderboards that rate them. Claude Fable 5's widest lead is on SimpleBench. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, GLM-5.2 is at 31.4 and Claude Fable 5 at 60.4 (out of 100).
Which is newer, GLM-5.2 or Claude Fable 5?
Claude Fable 5. It went live on July 1, 2026, 15 days after GLM-5.2 (June 16, 2026).
Which is cheaper, GLM-5.2 or Claude Fable 5?
GLM-5.2 is cheaper on both input and output. On each vendor's own API, GLM-5.2 is $1.40 input / $4.40 output per million tokens and Claude Fable 5 is $10 input / $50 output per million tokens. Prices as published in the models.dev catalog, as of 2026-11-08.
Which has the bigger context window, GLM-5.2 or Claude Fable 5?
Neither. Both take 1M tokens.
How do GLM-5.2 and Claude Fable 5 compare for coding?
On the ArtificialWatch coding index, GLM-5.2 is at 28.3 (#35 of 45) and Claude Fable 5 at 88.1 (#5). Claude Fable 5 scores higher on both coding boards that rate them.
Who makes GLM-5.2 and Claude Fable 5?
GLM-5.2 is from Zhipu AI; Claude Fable 5 is from Anthropic.
Where do these numbers come from?
Each score is the leaderboard's own published figure, read by ArtificialWatch (table composed November 8, 2026). Boards measure different things, so raw scores are only comparable within a row.
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Also: the bench index · API pricing · what a workload costs on each · the wire