BlogLLM Benchmark Scores as Published, Side by Side
Claude Fable 5.1 vs GLM-5.3: Benchmark Scores Side by Side
Every test both Claude Fable 5.1 by Anthropic and GLM-5.3 by Z.ai have a published number for: 37 tests in 10 areas. Each number is as printed, with the page it comes from and the setup it was run under; nothing is ranked or rescored, and two numbers under different setups are two results, not one comparison.
Models Claude Fable 5.1, GLM-5.3Data version 2026103001, as of 2026-10-30
Model
What each developer prints on its own model page; a dash means it prints none.
Knowledge Work
Agentic Coding
| Test | Claude Fable 5.1 | GLM-5.3 |
|---|---|---|
| DeepSWE v1.1 | 67.4%Anthropic, System Card: Claude Fable 5.1 & Claude Mythos 5.1, checked 2026-10-25; printed on 5 more pages | 66.9%Z.ai, GLM-5.3 model card, checked 2026-10-15; printed on 6 more pagesEffort: max; Harness: mini-swe-agent; Context: 400000 |
| Terminal-Bench 4.0 | 55.8%Anthropic, Claude Fable 5.1 and Mythos 5.1, checked 2026-10-15; printed on 11 more pagesModel setup as reported: Release table; exact effort is unspecified here unless stated. See system card for full protocol. 60.9%Anthropic, Claude Fable 5.1 and Mythos 5.1, checked 2026-10-15Model setup as reported: Second value printed in the Fable 5.1 cell as "60.9% (Mythos 5.1)": filed under the Fable 5.1 heading, the label names Claude Mythos 5.1. | 37.9%DeepSeek, DeepSeek-V4.1-Flash model card, checked 2026-10-15; printed on 4 more pages |
| ProgramBench Almost@1 | 55.5%Meta, Meta Muse Wonder model card, checked 2026-10-19; printed on 1 more pageEffort: max; Harness: mini-swe-agent | |
| SWE-Marathon | ||
| Kimi Code Bench 3.0 Long-horizon |
ML Engineering
| Test | Claude Fable 5.1 | GLM-5.3 |
|---|---|---|
| PostTrainBench v1.1 | 40.2%Google, Gemini 4 Argon, checked 2026-10-29 | 39.8%Z.ai, GLM-5.3 model card, checked 2026-10-15; printed on 1 more pageEffort: max; Harness: Claude Code 2.1.207; Context: 1000000 |
| PostTrainBench v1.2 | 44.6%Moonshot AI, Introducing Kimi K3.1 Pro, checked 2026-10-24Effort: max; Dataset revision: v1.2; Fallback: with fallback |
Science and Math
| Test | Claude Fable 5.1 | GLM-5.3 |
|---|---|---|
| GPQA Diamond | 93.7%Moonshot AI, Introducing Kimi K3.1 Pro, checked 2026-10-24; printed on 1 more pageEffort: max; Fallback: with fallback | 88.1%DeepSeek, DeepSeek-V4.1-Flash model card, checked 2026-10-15; printed on 2 more pages |
| Terminal-Bench Science 0.1 | 52.6%Anthropic, Claude Fable 5.1 and Mythos 5.1, checked 2026-10-15; printed on 8 more pages | |
| FrontierMath Tier 4 (v2) | 87.8%OpenAI, GPT-6 Astra, checked 2026-10-14 | |
| FrontierMath Tier 1-3 (v2) | ||
| BioMysteryBench |
Multimodal Understanding
| Test | Claude Fable 5.1 | GLM-5.3 |
|---|---|---|
| GDP.pdf | 11.2%MiniMax, MiniMax-M3.1-Flash model card, checked 2026-10-25; printed on 1 more page |
Cybersecurity
| Test | Claude Fable 5.1 | GLM-5.3 |
|---|---|---|
| ExploitBench | 54.4%Z.ai, GLM-5.3 model card, checked 2026-10-15; printed on 1 more pageEffort: max; Harness: Claude Code 2.1.207 | |
| ExploitGym | 30.4%Moonshot AI, Introducing Kimi K3.1 Pro, checked 2026-10-24; printed on 1 more pageEffort: max; Fallback: with fallback | 15%DeepSeek, DeepSeek-V4.1-Flash model card, checked 2026-10-15; printed on 2 more pages |
General Knowledge and Reasoning
| Test | Claude Fable 5.1 | GLM-5.3 |
|---|---|---|
| Humanity's Last Exam (no tools) | 60.9%Anthropic, Claude Fable 5.1 and Mythos 5.1, checked 2026-10-15; printed on 3 more pagesTools: none | 42%DeepSeek, DeepSeek-V4.1-Flash model card, checked 2026-10-15; printed on 3 more pagesDataset revision: text-only subset of HLE (dagger on the card) |
| Humanity's Last Exam (with tools) | 65%Anthropic, Claude Fable 5.1 and Mythos 5.1, checked 2026-10-15; printed on 5 more pagesTools: enabled; exact tools in source | 62.5%Z.ai, GLM-5.3 model card, checked 2026-10-15; printed on 3 more pagesEffort: max; Context: 300000 |
| SimpleQA Verified | ||
| Humanity's Last Exam Diamond (no tools) | 55.1%Moonshot AI, Introducing Kimi K3.1 Pro, checked 2026-10-24Effort: max; Tools: none; Fallback: with fallback | 16.4%Meta, Meta Muse Spark Open 816B-A42B model card, checked 2026-10-19; printed on 1 more pageEffort: max; Tools: none |
| Kimi Hallu Bench Hard w/ tools (lower is better)lower is better | 23.3%Moonshot AI, Introducing Kimi K3.1 Pro, checked 2026-10-24Effort: max; Tools: with tools; Fallback: with fallback | |
| Kimi Hallu Bench w/o tools (lower is better)lower is better | 11.4%Moonshot AI, Introducing Kimi K3.1 Pro, checked 2026-10-24Effort: max; Tools: none; Fallback: with fallback |
Tool Use and Workflows
| Test | Claude Fable 5.1 | GLM-5.3 |
|---|---|---|
| Toolathlon Verified | 77.8%Anthropic, System Card: Claude Fable 5.1 & Claude Mythos 5.1, checked 2026-10-25; printed on 2 more pagesEffort: max |
Instruction Following
| Test | Claude Fable 5.1 | GLM-5.3 |
|---|---|---|
| HANDBOOK.md | 38.8%Moonshot AI, Introducing Kimi K3.1 Pro, checked 2026-10-24Effort: max; Harness: OpenHands; Fallback: with fallback |
Safety and Alignment
| Test | Claude Fable 5.1 | GLM-5.3 |
|---|---|---|
| Gray Swan IPI (attack success rate after k attempts)attack success rate after k attempts, lower is better | 1%Anthropic, Claude Haiku 5.5 System Card, checked 2026-10-19; printed on 2 more pages | 31.5%Google, Gemini 4 Argon Safety and Security Report, checked 2026-10-19; printed on 1 more page |
Price
API list prices in US dollars per one million tokens, as printed on the developer's pricing page on the day checked; a dash means the developer lists that price in another unit or not at all. Cost per task is measured by Vals AI.
| Price | Claude Fable 5.1 | GLM-5.3 |
|---|---|---|
| Input | $10Anthropic, Anthropic API pricing, checked 2026-10-15 | $1.4Z.ai, Z.AI API pricing, checked 2026-10-15 |
| Cached input | $0.25Anthropic, Anthropic API pricing, checked 2026-10-15 | $0.26Z.ai, Z.AI API pricing, checked 2026-10-15 |
| Cache write | - | |
| Cache write, 1 hour | $20Anthropic, Anthropic API pricing, checked 2026-10-15 | - |
| Output | $50Anthropic, Anthropic API pricing, checked 2026-10-15 | $4.4Z.ai, Z.AI API pricing, checked 2026-10-15 |
| Input, batch | $5Anthropic, Anthropic API pricing, checked 2026-10-15 | - |
| Output, batch | $25Anthropic, Anthropic API pricing, checked 2026-10-15 | - |
| Cost per taskVals AI, USD, lower is better |
Claude Fable 5.1 has 100 more and GLM-5.3 has 36 more: tests only one of them has a number for, listed on its model page.
More side by side
- GPT-6 Astra vs Claude Fable 5.1
- Claude Fable 5.1 vs Gemini 4 Carbon
- Claude Fable 5.1 vs Grok 4.7
- Claude Fable 5.1 vs DeepSeek-V4.1-Flash-1017
- Claude Fable 5.1 vs Qwen3.8-Max
- Claude Fable 5.1 vs Kimi K3.1 Pro
- GPT-6 Astra vs GLM-5.3
- Grok 4.7 vs GLM-5.3
- DeepSeek-V4.1-Flash-1017 vs GLM-5.3
- Qwen3.8-Max vs GLM-5.3
- Kimi K3.1 Pro vs GLM-5.3
- GLM-5.3 vs MiniMax-M3.1-Flash
Every number here is read from the same catalog file as the benchmark table, data version 2026103001. A pair has a page when both models are their developers' flagships and both have a number for at least 10 of the same tests. Where one page printed a model under several setups, each value is listed. The catalog is public in armanobosyan/sugra-llm-benchmarks; a wrong number can be reported from the table, with Report an error under the value, or as an issue in that repository.