Claude Fable 5 vs GLM-5
Claude Fable 5 (Anthropic) and GLM-5 (Z.ai (Zhipu AI)) compared on benchmarks, pricing, context window, and use-case rankings.
- Claude Fable 5 leads on overall intelligence (ECI 161 vs 146).
- GLM-5 is cheaper on input tokens — $0.70 vs $10.00 per 1M.
- Claude Fable 5 has a larger context window (1M vs 205K tokens).
- Claude Fable 5 ranks higher for coding (99th vs 49th percentile).
| Attribute | Claude Fable 5 | GLM-5 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 161 | 146 |
| Coding | 99 | 49 |
| Math | 95 | 23 |
| Reasoning & Knowledge | 96 | 37 |
| Agentic & Tools | 98 | 64 |
| Specifications | ||
| Developer | Anthropic | Z.ai (Zhipu AI) |
| Family | Claude | — |
| Released | Jun 9, 2026 | Feb 17, 2026 |
| Parameters | — | 744B |
| Availability | API access | Open weights (unrestricted) |
| Context window | 1M | 205K |
| Price — $/M input | $10.00 | $0.70 |
| Price — $/M output | $50.00 | $2.24 |
| Inputs | text, image, file | text |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 100% | 80% |
| APEX | 45% | 17% |
| GPQA Diamond | 93% | 88% |
| Humanity's Last Exam | 53% | 27% |
| SciCode | 60% | 46% |
| SimpleBench | 82% | 53% |
| SimpleQA Verified | 68% | — |
| WebDev Arena | 1654 | 1447 |
| WeirdML | 92% | 48% |
| τ²-bench | 99% | 98% |
| ARC-AGI | — | 45% |
| ARC-AGI-2 | — | 5% |
| FrontierMath | — | 16% |
| FrontierMath Tier 4 | — | 2% |
| SWE-bench Verified | — | 72% |
| Terminal-Bench | — | 52% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Is Claude Fable 5 better than GLM-5?
On Epoch AI's Capabilities Index, Claude Fable 5 scores higher (161) than GLM-5 (146). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
Which is cheaper, Claude Fable 5 or GLM-5?
GLM-5 is cheaper on input tokens at $0.70 per million, versus $10.00 (representative OpenRouter pricing).
Which has a larger context window, Claude Fable 5 or GLM-5?
Claude Fable 5 supports up to 1M tokens, compared with 205K for the other.
Which is better for coding, Claude Fable 5 or GLM-5?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Claude Fable 5 ranks higher — 99th vs 49th percentile among the models tracked on Model Beat.
Want a different match-up? Open the compare tool to add or swap models.
More comparisons
Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.