Claude Fable 5.1 vs Mimo v2 Omni
Full profiles: Claude Fable 5.1 (Anthropic) and Mimo v2 Omni (Xiaomi): every benchmark, price and rank.
Updated · Data from 9 sources
As of 29 Oct 2026, Claude Fable 5.1 is ahead of Mimo v2 Omni on quality (67.0 vs 58.9 on the BenchLeader Index). Choose Claude Fable 5.1 for maths (73 vs 61), multimodal (67 vs 56), and reasoning (71 vs 62); choose Mimo v2 Omni for agents & tools (65 vs 61).
Key facts (as of 29 Oct 2026)
- Claude Fable 5.1 scores 67.0 on the BenchLeader Index and Mimo v2 Omni scores 58.9 (BenchLeader, 29 Oct 2026).
- Claude Fable 5.1 costs $20.00 per 1M tokens blended (list price, 29 Oct 2026).
- Of the 13 benchmarks both models have, Claude Fable 5.1 leads 13 (BenchLeader, 29 Oct 2026).
Claude Fable 5.1 benchmarks 
Mimo v2 Omni benchmarks Which to pick for…
The pick's numbers come first. Category scores on the BenchLeader scale (50 is the average model, 15 points one standard deviation). High confidence means a lead of half a standard deviation or more; under one point is called either.
| Use case | Pick | Why | Confidence |
|---|---|---|---|
| Coding | Claude Fable 5.1 | 71 vs 62 category score; Arena Coding 1538 vs 1488 | High |
| Agents & tool use | Mimo v2 Omni | 65 vs 61 category score | Medium |
| Maths | Claude Fable 5.1 | 73 vs 61 category score; Arena Maths 1529 vs 1434 | High |
| Reasoning | Claude Fable 5.1 | 71 vs 62 category score; Arena Hard Prompts 1523 vs 1458 | High |
| Long documents | Claude Fable 5.1 | 68 vs 61 category score; AA-LCR v1.1 85.3% vs 73.3% | Medium |
| Images and other media | Claude Fable 5.1 | 67 vs 56 category score; Arena Vision 1320 vs 1228 | High |
| Chat quality (human preference) | Claude Fable 5.1 | 70 vs 61 on Arena votes | High |
| High volume on a budget | Neither flagship | A smaller model is usually the better fit: Cheapest good LLMs, Fastest LLMs | – |
Key differences
- Claude Fable 5.1 (max) leads on quality: 67.0 vs 58.9.
- Claude Fable 5.1 (max) is stronger in coding, human preference, knowledge, long context, maths, multimodal, reasoning.
- Mimo v2 Omni is stronger in agents & tools, instruction following.
At a glance
| Spec | Claude Fable 5.1 | Mimo v2 Omni |
|---|---|---|
| Developer | Anthropic | Xiaomi |
| Released | 1 Sept 2026 | 27 Mar 2026 |
| Context window (tokens) | 1,000,000 | 256,000 |
| Compared at | Claude Fable 5.1 (max) | Mimo v2 Omni |
| Open weights | No | No |
| Price in / out / cached input per 1M | $10.00 / $50.00 / $0.250 | – |
Category by category
Category scores on the BenchLeader scale: 50 is the average evaluated model, 15 points is one standard deviation. A gap under one point is called level.
| Category | Claude Fable 5.1 (max) | Mimo v2 Omni | Leader |
|---|---|---|---|
| Reasoning | 70.8 | 61.9 | Claude Fable 5.1 |
| Coding | 70.7 | 62.1 | Claude Fable 5.1 |
| Agents & tools | 60.5 | 64.8 | Mimo v2 Omni |
| Maths | 72.6 | 61.0 | Claude Fable 5.1 |
| Knowledge | 72.9 | – | not comparable |
| Instruction following | – | 66.5 | not comparable |
| Human preference | 69.9 | 61.1 | Claude Fable 5.1 |
| Multimodal | 67.1 | 55.9 | Claude Fable 5.1 |
| Long context | 67.6 | 61.4 | Claude Fable 5.1 |
Where sources disagree
Across the 13 benchmarks both have, Claude Fable 5.1 leads 13, Mimo v2 Omni leads 0. Every overall index that rates both puts Claude Fable 5.1 ahead.
| Overall index | Claude Fable 5.1 (max) | Mimo v2 Omni | Leader |
|---|---|---|---|
| BenchLeader Index | 67.0 | 58.9 | Claude Fable 5.1 |
| Arena Text | 1503 | 1431 | Claude Fable 5.1 |
Each publisher runs its own tasks, harnesses and effort settings, so their overall verdicts can differ; BenchLeader reconciles them on one scale. † measured at another effort setting of the same model (the publisher did not test the one compared here).
Price, speed and latency
List prices blended at three input tokens per output token. Per-task prices use the token counts on the methodology page; suite cost is what Artificial Analysis paid to run its whole Intelligence Index.
| Measure | Claude Fable 5.1 (max) | Mimo v2 Omni |
|---|---|---|
| Blended price per 1M tokens | $20.00 | – |
| Input / output per 1M | $10.00 / $50.00 | – / – |
| Cached input per 1M | $0.250 | – |
| Price per task: chat reply | $0.019 | – |
| Price per task: summarize a 30-page report | $0.150 | – |
| Price per task: code edit | $0.135 | – |
| Price per task: agentic coding session | $0.800 | – |
| Price per task: structured extraction | $0.030 | – |
| Cost to run a full benchmark suite | $12.99 | – |
| Output speed | 66 tok/s | – |
| Time to first answer | 179.6 s | – |
| Time to a complete answer | 187.2 s | – |
Each model is compared at its best-ranked reasoning-effort setting. Claude Fable 5.1 (max) scores 67.0 and takes 180 s to its first answer token; Claude Fable 5.1 scores 66.4 in 3 s, Claude Fable 5.1 (xhigh) scores 64.9 in 58 s. Mimo v2 Omni scores 58.9. Higher effort means more thinking before the answer: better scores, longer waits and more tokens billed. How reasoning effort changes scores and cost.
Every benchmark
137 benchmarks, grouped by category; each name links to the board and its leaders. † measured at another effort setting of the same model, shown for reference and not counted as a win.
| Metric | Publisher | Claude Fable 5.1 (max) | Mimo v2 Omni |
|---|---|---|---|
| BenchLeader Index | BenchLeader | 67.0 | 58.9 |
| Agents & tools score | BenchLeader | 60.5 | 64.8 |
| Coding score | BenchLeader | 70.7 | 62.1 |
| Human preference score | BenchLeader | 69.9 | 61.1 |
| Knowledge score | BenchLeader | 72.9 | – |
| Long context score | BenchLeader | 67.6 | 61.4 |
| Maths score | BenchLeader | 72.6 | 61.0 |
| Multimodal score | BenchLeader | 67.1 | 55.9 |
| Reasoning score | BenchLeader | 70.8 | 61.9 |
| Instruction following score | BenchLeader | – | 66.5 |
| Blended price $/M | BenchLeader | $20.00 | – |
| Output speed | BenchLeader | 66 tok/s | – |
| Time to first answer | BenchLeader | 179.6 s | – |
| Context window | BenchLeader | 1,000,000 tokens | 256,000 tokens |
| Reasoning | |||
| Humanity's Last Exam | Scale AI / CAIS | 46.5%† | – |
| Arena Hard Prompts | Arena (LMArena) | 1523 | 1458 |
| LiveBench 2.0 Reasoning | LiveBench | 91.7%† | – |
| LiveBench 1.0 Reasoning | LiveBench | 91.7% | – |
| GPQA Diamond (AA) | Artificial Analysis | 93.7% | 85.5% |
| Humanity's Last Exam (AA) | Artificial Analysis | 59.1% | 22.6% |
| HLE-Diamond (AA) | Artificial Analysis | 60.1% | – |
| GPQA Diamond (Vals) | Vals AI | 93.4%† | – |
| ARC-AGI-1 | ARC Prize | 97.5% | – |
| ARC-AGI-2 | ARC Prize | 90.0% | – |
| CritPt | Artificial Analysis | 29.7% | 0.9% |
| CritPt v2 hard subset (AA) | Artificial Analysis | 51.0% | – |
| MysteryMechanism | Vals AI | 47.8%† | – |
| Chess Puzzles | Epoch AI Benchmarking Hub | 48.0% | – |
| Mystery Game Puzzles | Epoch AI Benchmarking Hub | 58.0% | – |
| LMCA | Epoch AI Benchmarking Hub | 65.5%† | – |
| DTBench | Epoch AI Benchmarking Hub | 97.6%† | – |
| Coding | |||
| SciCode | SciCode | 63.1% | – |
| WeirdML | WeirdML | 92.9% | – |
| FrontierCode | Cognition | 50.9%† | – |
| GSO-Bench | GSO-Bench | 88.2%† | – |
| Arena Coding | Arena (LMArena) | 1538 | 1488 |
| Arena WebDev | Arena (LMArena) | 1745 | – |
| LiveBench 2.0 Coding | LiveBench | 97.7%† | – |
| LiveBench 1.0 Coding | LiveBench | 86.4% | – |
Show all 137 benchmarks
| Metric | Publisher | Claude Fable 5.1 (max) | Mimo v2 Omni |
|---|---|---|---|
| Coding | |||
| LiveCodeBench | Vals AI | 90.5%† | – |
| IOI | Vals AI | 90.8%† | – |
| Code Migration | Vals AI | 54.6%† | – |
| ProgramBench | Vals AI | 7.0%† | – |
| SWE-bench Multimodal | Vals AI | 61.3%† | – |
| Vibe Code Bench 1-100 | Vals AI | 28.0%† | – |
| Vibe Code Bench v1.1 | Vals AI | 90.3%† | – |
| SWE Atlas: Codebase QnA | Scale AI SEAL | 60.0%† | – |
| SWE Atlas: Refactoring | Scale AI SEAL | 56.7%† | – |
| SWE Atlas: Test Writing | Scale AI SEAL | 67.0%† | – |
| MirrorCode | Epoch AI Benchmarking Hub | 73.3%† | – |
| CursorBench | Cursor | 51.8% | – |
| ALE-Bench | Epoch AI Benchmarking Hub | 2143.2† | – |
| FrontierSWE | Epoch AI Benchmarking Hub | 56.3% | – |
| Terminal-Bench 4.0 (AA) | Artificial Analysis | 52.0% | – |
| Terminal-Bench 2.1 (AA) | Artificial Analysis | 91.4% | – |
| Startrise Frontend | Startrise | 77.1%† | – |
| FrontierCode 1.1 (AA) | Artificial Analysis | 49.0% | – |
| FrontierCode 2.0 (AA) | Artificial Analysis | 31.6% | – |
| Agents & tools | |||
| Terminal-Bench | Terminal-Bench | 57.9% | – |
| Remote Labor Index | Scale AI / CAIS | 17.9%† | – |
| APEX-Agents | Mercor | 68.6%† | – |
| Arena Agent | Arena (LMArena) | 13.9 | – |
| LiveBench Long Agentic | LiveBench | 77.9%† | – |
| LiveBench Browser | LiveBench | 89.8%† | – |
| LiveBench Agentic Coding | LiveBench | 66.1% | – |
| Terminal-Bench Hard | Artificial Analysis | – | 35.6% |
| τ²-Bench Telecom (AA) | Artificial Analysis | – | 88.0% |
| Terminal-Bench 2.1 (Vals) | Vals AI | 85.0%† | – |
| MCP Atlas | Scale AI SEAL | 87.2%† | – |
| HiL-Bench | Scale AI SEAL | 61.5%† | – |
| GDPval-AA v2.1, normalised score | Artificial Analysis | 62.7% | – |
| GDPval-AA v2.1 | Artificial Analysis | 1764 | – |
| τ³-Banking (AA) | Artificial Analysis | 47.2% | – |
| ITBench SRE (AA) | Artificial Analysis | 49.5% | – |
| Analyst Agent (AA) | Artificial Analysis | 57.5% | – |
| CUA-bench | Vals AI | 13.2% | – |
| CyberBench | Vals AI | 70.4%† | – |
| Finance Agent v2 | Vals AI | 58.9%† | – |
| Harvey's Legal Agent Benchmark v1 | Vals AI | 6.7%† | – |
| Legal Research Bench | Vals AI | 55.3%† | – |
| Robo-bench | Vals AI | 5.8% | – |
| SkillsBench | Vals AI | 61.5%† | – |
| SREBench | Vals AI | 22.9%† | – |
| Tax Agent Bench | Vals AI | 49.2%† | – |
| Terminal-Bench 4.0 (Vals) | Vals AI | 58.1%† | – |
| Terminal-Bench Science | Vals AI | 40.0%† | – |
| Time Horizon Index: KSP | Vals AI | 63.3%† | – |
| Arena Search | Arena (LMArena) | 1233† | – |
| Vending-Bench 2 | Andon Labs | 5421.6† | – |
| AutomationBench | Artificial Analysis | 59.4% | – |
| GDP.pdf (AA) | Artificial Analysis | 26.2% | – |
| Harvey LAB-AA v1.1 | Harvey | 6.4% | – |
| AA-Briefcase v1.1 | Artificial Analysis | 1669 | – |
| Terminal-Bench-Science 0.1 (AA) | Artificial Analysis | 43.3% | – |
| CWE-Bench (AA) | Artificial Analysis | 50.8% | – |
| DeepSec-Bench (AA) | Artificial Analysis | 23.5% | – |
| CyberGym end-to-end (AA) | Artificial Analysis | 0.8% | – |
| Maths | |||
| FrontierMath Tiers 1–3 | Epoch AI Benchmarking Hub | 90.2% | – |
| FrontierMath Tier 4 | Epoch AI Benchmarking Hub | 87.8% | – |
| OTIS Mock AIME | Epoch AI Benchmarking Hub | 100.0% | – |
| ProofBench | Vals AI | 100.0% | – |
| LiveBench Mathematics | LiveBench | 97.0% | – |
| Arena Maths | Arena (LMArena) | 1529 | 1434 |
| Knowledge | |||
| SimpleQA Verified | Epoch AI Benchmarking Hub | 70.8% | – |
| LiveBench 2.0 Data Analysis | LiveBench | 80.3%† | – |
| LiveBench Research | LiveBench | 82.0%† | – |
| LiveBench 1.0 Data Analysis | LiveBench | 80.3% | – |
| AA-Omniscience v1.1 | Artificial Analysis | 46.3 | – |
| MMLU-Pro | Vals AI | 92.4%† | – |
| LegalBench | Vals AI | 88.5%† | – |
| TaxEval | Vals AI | 76.0%† | – |
| PRBench Finance | Scale AI SEAL | 50.8%† | – |
| PRBench Legal | Scale AI SEAL | 51.6%† | – |
| Excel Modeling Benchmark | Vals AI | 76.7%† | – |
| Excel Modeling Benchmark v1.1 | Vals AI | 76.7%† | – |
| MedCode | Vals AI | 53.5%† | – |
| MedScribe | Vals AI | 91.3%† | – |
| Public Benefits Bench v1.1 | Vals AI | 74.9%† | – |
| EBR-bench | Epoch AI Benchmarking Hub | 57.1% | – |
| GDP.pdf | Epoch AI Benchmarking Hub | 27.6% | – |
| AA-Omniscience v1.1: accuracy | Artificial Analysis | 68.4% | – |
| AA-Omniscience v1.1: non-hallucination | Artificial Analysis | 30.0% | – |
| HealthBench Professional (AA) | OpenAI | 57.8% | – |
| Instruction following | |||
| LiveBench Language | LiveBench | 89.5% | – |
| LiveBench Instruction Following | LiveBench | 73.0% | – |
| IFBench | Artificial Analysis | – | 67.3% |
| Arena Instruction Following | Arena (LMArena) | 1501 | 1428 |
| Human preference | |||
| Arena Text | Arena (LMArena) | 1503 | 1431 |
| Arena Creative Writing | Arena (LMArena) | 1487 | 1395 |
| Arena Multi-turn | Arena (LMArena) | 1488 | 1452 |
| Arena Longer Queries | Arena (LMArena) | 1511 | 1450 |
| Multimodal | |||
| Arena Vision | Arena (LMArena) | 1320 | 1228 |
| LiveBench Design | LiveBench | 83.4%† | – |
| MMMU-Pro | Artificial Analysis | – | 73.9% |
| MMMU-Pro (Vals) | Vals AI | 90.6%† | – |
| MortgageTax | Vals AI | 70.8%† | – |
| Blueprint-Bench 2 | Epoch AI Benchmarking Hub | 41.9%† | – |
| Code2Video-AA | Artificial Analysis | 1325 | – |
| AA-3D | Artificial Analysis | 1135 | – |
| Long context | |||
| AA-LCR v1.1 | Artificial Analysis | 85.3% | 73.3% |
| Arena Document | Arena (LMArena) | 1493 | – |
| MLCR | Artificial Analysis | 15.6% | – |
| Composite | |||
| Epoch Capabilities Index | Epoch AI Benchmarking Hub | 166.5† | – |
| LiveBench 2.0 | LiveBench | 85.7%† | – |
| LiveBench 1.0 | LiveBench | 83.4% | – |
| AA Intelligence Index v5.0 | Artificial Analysis | 49.0 | – |
| AA Intelligence Index v4.3.2 | Artificial Analysis | 53.4 | 25.1 |
| AA Progress Index v1 | Artificial Analysis | 340.8 | 269 |
| Vals RSI Index | Vals AI | 36.1% | – |
| AA Cyber Index | Artificial Analysis | 25.0 | – |
| Safety & honesty | |||
| FORTRESS | Scale AI SEAL | 13.7%† | – |
Data as of 2026-10-29. Best configuration of each model; every score links to its source on the model pages.
What changed
- Claude Fable 5.1 (max): BenchLeader Index 67.9 → 67.1.
- Claude Fable 5.1 (max): 5 new results (AA Intelligence Index v5.0, AA Progress Index v1, HLE-Diamond (AA)…); 3 score revisions; cost per task moved from $7.63/M to $13.04/M (71% up).
- Mimo v2 Omni: 1 new result (AA Progress Index v1).
- Claude Fable 5.1 (max): 2 new results (Robo-bench, Vals RSI Index).
- Claude Fable 5.1 (max): 1 score revision.
- Claude Fable 5.1 (max): 1 score revision.
- Mimo v2 Omni: BenchLeader Index 57.5 → 58.7.
- Mimo v2 Omni: 7 score revisions.
- Claude Fable 5.1 (max): 2 score revisions.
- Claude Fable 5.1 (max): 1 score revision.
Related comparisons
- Claude Fable 5.1 vs Claude Opus 5.5
- Claude Fable 5.1 vs GPT-6 Astra
- Claude Fable 5.1 vs GPT-6.1 Sol
- Mimo v2 Omni vs Claude Opus 5.5
- Mimo v2 Omni vs GPT-6 Astra
- Mimo v2 Omni vs GPT-6.1 Sol
- Claude Opus 5 vs Mimo v2 Omni
- Claude Fable 5.1 vs Mimo v2 Pro
Rankings: Best LLM overall · Best LLM for coding · Best LLM for agents · Best cheap LLMs
Claude Fable 5.1 vs Mimo v2 Omni: questions
- Is Claude Fable 5.1 better than Mimo v2 Omni?
- Claude Fable 5.1 (max) leads on quality: 67.0 vs 58.9. The BenchLeader Index combines every independent quality benchmark; Claude Fable 5.1 (max) is ahead overall as of 29 Oct 2026, but check the category scores for your use.
- Is Claude Fable 5.1 or Mimo v2 Omni better for coding?
- Claude Fable 5.1 scores higher in coding (71 vs 62 on the category index, where 50 is average). On Arena Coding, the top shared coding benchmark, it is 1538 for Claude Fable 5.1 against 1488 for Mimo v2 Omni.
- Is Claude Fable 5.1 or Mimo v2 Omni better for agents and tool use?
- Mimo v2 Omni scores higher in agentic tasks (65 vs 61 on the category index, where 50 is average).
- Which is better for long documents?
- Claude Fable 5.1 scores higher on long-context benchmarks (68 vs 61). Claude Fable 5.1 accepts more context: 1,000,000 against 256,000 tokens for Mimo v2 Omni.
- Do independent benchmarks agree on Claude Fable 5.1 vs Mimo v2 Omni?
- Across the 13 benchmarks both have, Claude Fable 5.1 leads 13, Mimo v2 Omni leads 0. Every overall index that rates both puts Claude Fable 5.1 ahead.
More questions (1)
- When was Claude Fable 5.1 released?
- Claude Fable 5.1 was released on 1 Sept 2026.