Claude Fable 5.1 vs MiniMax M2.5
Claude Fable 5.1 leads MiniMax M2.5 on coding, 84.2 to 37.2 on the Vibe Coding Index, and MiniMax M2.5 costs 41.7x less per output token ($1.20 vs $50.00 per million). Updated October 22, 2026; 57 benchmarks have a result for both.
vs boards won of 57 shared
Claude Fable 5.1 or MiniMax M2.5: which to pick
Pick Claude Fable 5.1 for coding: it scores 84.2 on the Vibe Coding Index against 37.2 for MiniMax M2.5.
Pick MiniMax M2.5 for output tokens 41.7x cheaper ($1.20 vs $50.00 per million).
Model AClaude Fable 5.1Anthropic84.2/1005 independent benchmarksNo cost per solved taskModel BMiniMax M2.5MiniMax37.2/1003 independent benchmarks$0.62 per solved task
- Shared results
- 57
- Claude Fable 5.1 only
- 76
- MiniMax M2.5 only
- 14
- Like-for-like categories
- 8 of 9
Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, six public coding benchmarks
Claude Fable 5.1
Claude Fable 5.1 scores 84.2 against 37.2.
5 and 3 benchmarks behind the scores
Intelligence
AA Intelligence Index
Claude Fable 5.1
Claude Fable 5.1 leads, 53.4 against 22.8.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Claude Fable 5.1 has a AA Agentic Index result, 57.9.
Directional only
Reasoning
GPQA Diamond
Claude Fable 5.1
Claude Fable 5.1 leads, 93.4% against 82.1%.
Same board, both measured
Math
AIME
No call
Only MiniMax M2.5 has a AIME result, 88.8%.
Directional only
Knowledge
MMLU Pro
Claude Fable 5.1
Claude Fable 5.1 leads, 92.4% against 80.1%.
Same board, both measured
Web design
Design Arena: websites
Claude Fable 5.1
Claude Fable 5.1 leads, 1312 against 1222.
Same board, both measured
Long documents
Listed context window
Claude Fable 5.1
Claude Fable 5.1 takes 1M tokens against 205K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
MiniMax M2.5
Claude Fable 5.1 $0.035, MiniMax M2.5 $0.0009 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only MiniMax M2.5 has the number, $0.62.
Directional only
At a glance
- Coding index
- Claude Fable 5.1 84.2 from 5 benchmarks, MiniMax M2.5 37.2 from 3 benchmarks.
- Widest category
- Math, 49.5 points apart on average over 3 shared benchmarks.
- Widest single gap
- ProofBench: Claude Fable 5.1 100.0% against MiniMax M2.5 4.0%, 96.0 points apart on a 0 to 100 scale.
- Output price
- Claude Fable 5.1 $50.00 against MiniMax M2.5 $1.20 per million output tokens, 41.7x apart.
- Context window
- Claude Fable 5.1 takes 1M tokens, MiniMax M2.5 205K.
Benchmark by benchmark
First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.
| Category | Claude Fable 5.1 | Bars | MiniMax M2.5 | Ties |
|---|---|---|---|---|
| Coding | 11 | 0 | ||
| Intelligence | 2 | 0 | ||
| Agentic work | 1 | 0 | ||
| Reasoning | 8 | 0 | ||
| Math | 3 | 0 | ||
| Knowledge | 7 | 0 | ||
| Web design | 7 | 0 | ||
| General | 18 | 0 | ||
| All shared boards | 57 | 0 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index110
| Benchmark | Claude Fable 5.1 | MiniMax M2.5 | Leader |
|---|---|---|---|
| SWE-bench Verified | Not measured | 75.8% | Only MiniMax M2.5 measured |
| SWE-bench Multilingual | Not measured | 68.3% | Only MiniMax M2.5 measured |
| LiveBench coding | 97.7% | Not measured | Only Claude Fable 5.1 measured |
| LMArena WebDev | 1743 | 1386 | Claude Fable 5.1 |
| AA Coding Index | 81.6 | Not measured | Only Claude Fable 5.1 measured |
| LiveCodeBench (Vals AI) | 90.5% | 79.2% | Claude Fable 5.1 |
| SWE-bench Verified (Vals AI) | Not measured | 74.2% | Only MiniMax M2.5 measured |
| Terminal-Bench 4 (Vals AI) | 58.1% | Not measured | Only Claude Fable 5.1 measured |
| Vibe Code Bench (Vals AI) | 90.3% | 14.8% | Claude Fable 5.1 |
| Code migration (Vals AI) | 54.6% | Not measured | Only Claude Fable 5.1 measured |
| ProgramBench (Vals AI) | 7.0% | Not measured | Only Claude Fable 5.1 measured |
| IOI (Vals AI) | 90.8% | Not measured | Only Claude Fable 5.1 measured |
| Terminal-Bench 2.1 (Vals AI) | 85.0% | Not measured | Only Claude Fable 5.1 measured |
| SWE-bench Multimodal (Vals AI) | 61.3% | Not measured | Only Claude Fable 5.1 measured |
| Vibe Code Bench 1-100 (Vals AI) | 28.0% | Not measured | Only Claude Fable 5.1 measured |
| SkillsBench (Vals AI) | 61.5% | Not measured | Only Claude Fable 5.1 measured |
| CyberBench (Vals AI) | 70.4% | Not measured | Only Claude Fable 5.1 measured |
| SciCode | 63.1% | Not measured | Only Claude Fable 5.1 measured |
| Terminal-Bench Hard (Artificial Analysis run) | Not measured | 34.8% | Only MiniMax M2.5 measured |
| Terminal-Bench | Not measured | 42.7% | Only MiniMax M2.5 measured |
| FrontierCode | 50.9% | Not measured | Only Claude Fable 5.1 measured |
| FrontierSWE | 56.3% | Not measured | Only Claude Fable 5.1 measured |
| GSO-Bench | 88.2% | Not measured | Only Claude Fable 5.1 measured |
| WeirdML | 92.9% | Not measured | Only Claude Fable 5.1 measured |
| MirrorCode | 73.3% | Not measured | Only Claude Fable 5.1 measured |
| ALE-Bench | 2143.2 | 618.2 | Claude Fable 5.1 |
| LMArena Text: coding | 1532 | 1380 | Claude Fable 5.1 |
| LMArena Text: software and IT | 1530 | 1383 | Claude Fable 5.1 |
| LMArena WebDev: React | 1792 | 1374 | Claude Fable 5.1 |
| LMArena WebDev: HTML | 1684 | 1414 | Claude Fable 5.1 |
| LMArena WebDev: from an image | 1722 | Not measured | Only Claude Fable 5.1 measured |
| SWE-Bench Pro V2 | 99.1% | Not measured | Only Claude Fable 5.1 measured |
| SWE Atlas: Codebase QnA | 60.0% | 10.3% | Claude Fable 5.1 |
| SWE Atlas: Refactoring | 56.7% | 19.5% | Claude Fable 5.1 |
| SWE Atlas: Test Writing | 67.0% | 18.6% | Claude Fable 5.1 |
| Neither model has a result on the other 8 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Claude Fable 5.1 | MiniMax M2.5 | Leader |
|---|---|---|---|
| AA Intelligence Index | 53.4 | 22.8 | Claude Fable 5.1 |
| Epoch Capabilities Index | 166.5 | 146.6 | Claude Fable 5.1 |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Claude Fable 5.1 | MiniMax M2.5 | Leader |
|---|---|---|---|
| AA Agentic Index | 57.9 | Not measured | Only Claude Fable 5.1 measured |
| Design Arena: agents building web apps | 1318 | Not measured | Only Claude Fable 5.1 measured |
| Design Arena: agents building full-stack apps | 1326 | Not measured | Only Claude Fable 5.1 measured |
| Design Arena: agents building mobile apps | 1267 | Not measured | Only Claude Fable 5.1 measured |
| Design Arena: agents building Godot games | 1327 | Not measured | Only Claude Fable 5.1 measured |
| Design Arena: PowerPoint slides | 1307 | Not measured | Only Claude Fable 5.1 measured |
| Design Arena: spreadsheets | 1394 | Not measured | Only Claude Fable 5.1 measured |
| LiveBench research | 82.0% | Not measured | Only Claude Fable 5.1 measured |
| LiveBench browser | 100.0% | Not measured | Only Claude Fable 5.1 measured |
| LiveBench long agentic | 80.8% | Not measured | Only Claude Fable 5.1 measured |
| SREBench (Vals AI) | 22.9% | Not measured | Only Claude Fable 5.1 measured |
| Finance Agent (Vals AI) | 58.9% | Not measured | Only Claude Fable 5.1 measured |
| Tax Agent Bench (Vals AI) | 49.2% | Not measured | Only Claude Fable 5.1 measured |
| Legal Research Bench (Vals AI) | 55.3% | Not measured | Only Claude Fable 5.1 measured |
| Excel Modeling Benchmark (Vals AI) | 76.7% | Not measured | Only Claude Fable 5.1 measured |
| Terminal-Bench-Science (Vals AI) | 40.0% | Not measured | Only Claude Fable 5.1 measured |
| Time Horizon Index (Vals AI) | 63.3% | Not measured | Only Claude Fable 5.1 measured |
| CUA-bench (Vals AI) | 13.2% | Not measured | Only Claude Fable 5.1 measured |
| Robo-bench (Vals AI) | 5.8% | Not measured | Only Claude Fable 5.1 measured |
| τ²-Bench Telecom | Not measured | 95.3% | Only MiniMax M2.5 measured |
| APEX-Agents | 68.6% | Not measured | Only Claude Fable 5.1 measured |
| Remote Labor Index | 17.9% | Not measured | Only Claude Fable 5.1 measured |
| SpireClimb | 2.0% | Not measured | Only Claude Fable 5.1 measured |
| Vending-Bench 2 | $5,422 | -$23 | Claude Fable 5.1 |
| LMArena Search | 1246 | Not measured | Only Claude Fable 5.1 measured |
| MCP Atlas | 87.2% | Not measured | Only Claude Fable 5.1 measured |
| Neither model has a result on the other 16 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index80
| Benchmark | Claude Fable 5.1 | MiniMax M2.5 | Leader |
|---|---|---|---|
| GPQA Diamond | 93.4% | 82.1% | Claude Fable 5.1 |
| LiveBench reasoning | 91.7% | Not measured | Only Claude Fable 5.1 measured |
| MysteryMechanism (Vals AI) | 47.8% | Not measured | Only Claude Fable 5.1 measured |
| MMMU Pro (Vals AI) | 90.6% | Not measured | Only Claude Fable 5.1 measured |
| GPQA Diamond (Artificial Analysis run) | 93.7% | 84.8% | Claude Fable 5.1 |
| Humanity's Last Exam (Artificial Analysis run) | 59.1% | 20.5% | Claude Fable 5.1 |
| ARC-AGI | 97.5% | 63.7% | Claude Fable 5.1 |
| ARC-AGI-2 | 90.0% | 4.9% | Claude Fable 5.1 |
| Chess puzzles | 48.0% | Not measured | Only Claude Fable 5.1 measured |
| Mystery game puzzles | 58.0% | Not measured | Only Claude Fable 5.1 measured |
| EBR-bench | 57.1% | Not measured | Only Claude Fable 5.1 measured |
| LMArena Text: hard prompts | 1528 | 1372 | Claude Fable 5.1 |
| LMArena Text: expert | 1544 | 1378 | Claude Fable 5.1 |
| LMArena Text: hard prompts in English | 1522 | 1384 | Claude Fable 5.1 |
| LMArena Vision: diagrams | 1343 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Vision: homework | 1345 | Not measured | Only Claude Fable 5.1 measured |
| Kagi LLM Benchmark | Not measured | 55.2% | Only MiniMax M2.5 measured |
| Humanity's Last Exam (Scale run) | 51.3% | Not measured | Only Claude Fable 5.1 measured |
| Neither model has a result on the other 5 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index30
| Benchmark | Claude Fable 5.1 | MiniMax M2.5 | Leader |
|---|---|---|---|
| AIME | Not measured | 88.8% | Only MiniMax M2.5 measured |
| OTIS Mock AIME | 100.0% | Not measured | Only Claude Fable 5.1 measured |
| FrontierMath, tiers 1 to 3 | 90.2% | Not measured | Only Claude Fable 5.1 measured |
| FrontierMath, tier 4 | 87.8% | Not measured | Only Claude Fable 5.1 measured |
| ProofBench | 100.0% | 4.0% | Claude Fable 5.1 |
| LMArena Text: math | 1531 | 1378 | Claude Fable 5.1 |
| LMArena Text: mathematical work | 1541 | 1378 | Claude Fable 5.1 |
| MathArena | 78.1% | Not measured | Only Claude Fable 5.1 measured |
| Neither model has a result on the other 6 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index70
| Benchmark | Claude Fable 5.1 | MiniMax M2.5 | Leader |
|---|---|---|---|
| MMLU Pro | 92.4% | 80.1% | Claude Fable 5.1 |
| LegalBench (Vals AI) | 88.5% | 80.0% | Claude Fable 5.1 |
| CaseLaw (Vals AI) | Not measured | 53.5% | Only MiniMax M2.5 measured |
| CorpFin (Vals AI) | Not measured | 59.6% | Only MiniMax M2.5 measured |
| TaxEval (Vals AI) | 76.0% | 68.2% | Claude Fable 5.1 |
| MortgageTax (Vals AI) | 70.8% | Not measured | Only Claude Fable 5.1 measured |
| MedQA (Vals AI) | Not measured | 92.5% | Only MiniMax M2.5 measured |
| MedCode (Vals AI) | 53.5% | Not measured | Only Claude Fable 5.1 measured |
| SimpleQA Verified | 70.8% | Not measured | Only Claude Fable 5.1 measured |
| LMArena Text: science | 1532 | 1369 | Claude Fable 5.1 |
| LMArena Text: medicine and healthcare | 1531 | 1357 | Claude Fable 5.1 |
| LMArena Text: legal and government | 1514 | 1366 | Claude Fable 5.1 |
| LMArena Text: business and finance | 1493 | 1356 | Claude Fable 5.1 |
| PRBench Finance | 50.8% | Not measured | Only Claude Fable 5.1 measured |
| PRBench Legal | 51.6% | Not measured | Only Claude Fable 5.1 measured |
| Neither model has a result on the other 5 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index70
| Benchmark | Claude Fable 5.1 | MiniMax M2.5 | Leader |
|---|---|---|---|
| Design Arena: websites | 1312 | 1222 | Claude Fable 5.1 |
| Design Arena: UI components | 1336 | 1170 | Claude Fable 5.1 |
| Design Arena: game dev | 1381 | 1176 | Claude Fable 5.1 |
| Design Arena: data viz | 1345 | 1172 | Claude Fable 5.1 |
| Design Arena: 3D | 1392 | 1170 | Claude Fable 5.1 |
| Design Arena: all code categories | 1335 | 1207 | Claude Fable 5.1 |
| Design Arena: SVG | 1300 | 1150 | Claude Fable 5.1 |
| Design Arena: ASCII art | 1323 | Not measured | Only Claude Fable 5.1 measured |
| LiveBench design | 83.4% | Not measured | Only Claude Fable 5.1 measured |
GeneralLike-for-likePublic boards, shown as published, kept out of the index180
| Benchmark | Claude Fable 5.1 | MiniMax M2.5 | Leader |
|---|---|---|---|
| LiveBench data analysis | 80.3% | Not measured | Only Claude Fable 5.1 measured |
| Public Benefits Bench (Vals AI) | 74.9% | Not measured | Only Claude Fable 5.1 measured |
| SAGE (Vals AI) | 48.5% | Not measured | Only Claude Fable 5.1 measured |
| MedScribe (Vals AI) | 91.3% | Not measured | Only Claude Fable 5.1 measured |
| IFBench | Not measured | 71.6% | Only MiniMax M2.5 measured |
| Long context reasoning (AA-LCR) | 85.3% | 73.3% | Claude Fable 5.1 |
| DTBench | 97.6% | Not measured | Only Claude Fable 5.1 measured |
| LMCA | 65.5% | Not measured | Only Claude Fable 5.1 measured |
| CL-bench | Not measured | 11.4% | Only MiniMax M2.5 measured |
| Furniture assembly | 70.0% | Not measured | Only Claude Fable 5.1 measured |
| CL-bench Life | Not measured | 6.3% | Only MiniMax M2.5 measured |
| LMArena Text | 1512 | 1359 | Claude Fable 5.1 |
| LMArena Text: instruction following | 1518 | 1353 | Claude Fable 5.1 |
| LMArena Text: creative writing | 1509 | 1331 | Claude Fable 5.1 |
| LMArena Vision | 1319 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Text: English | 1506 | 1380 | Claude Fable 5.1 |
| LMArena Text: non-English | 1508 | 1338 | Claude Fable 5.1 |
| LMArena Text: Chinese | 1584 | 1393 | Claude Fable 5.1 |
| LMArena Text: German | 1499 | 1361 | Claude Fable 5.1 |
| LMArena Text: Japanese | 1562 | 1171 | Claude Fable 5.1 |
| LMArena Text: Korean | 1517 | 1233 | Claude Fable 5.1 |
| LMArena Text: French | 1523 | 1363 | Claude Fable 5.1 |
| LMArena Text: Spanish | 1520 | 1353 | Claude Fable 5.1 |
| LMArena Text: Russian | 1520 | 1359 | Claude Fable 5.1 |
| LMArena Text: Polish | 1525 | 1334 | Claude Fable 5.1 |
| LMArena Text: multi-turn | 1493 | 1364 | Claude Fable 5.1 |
| LMArena Text: longer queries | 1524 | 1366 | Claude Fable 5.1 |
| LMArena Text: writing and language | 1510 | 1345 | Claude Fable 5.1 |
| LMArena Text: entertainment and media | 1497 | 1329 | Claude Fable 5.1 |
| LMArena Vision: English | 1313 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Vision: Chinese | 1391 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Vision: reading text | 1327 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Vision: humor | 1318 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Vision: creative writing | 1330 | Not measured | Only Claude Fable 5.1 measured |
| Neither model has a result on the other 14 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Claude Fable 5.1 | MiniMax M2.5 | Leader |
|---|---|---|---|
| Neither model has a result on 5 boards here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Claude Fable 5.1$0.035Fits in one request
MiniMax M2.5$0.0009Fits in one request
MiniMax M2.5 costs less
Repository review
50K input + 3K output tokens
Claude Fable 5.1$0.650Fits in one request
MiniMax M2.5$0.019Fits in one request
MiniMax M2.5 costs less
Agent loop
200K input + 10K output tokens
Claude Fable 5.1$2.50Fits in one request
MiniMax M2.5$0.072Exceeds the context window
MiniMax M2.5 costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | Anthropic Claude Fable 5.1 | MiniMax M2.5 |
|---|---|---|
| Maker | Anthropic | MiniMax |
| Weights | No public weights listed | Open weights |
| Released | September 1, 2026 | February 12, 2026 |
| Context window | 1M | 205K |
| Input $/Mtok | $10.00 | $0.30 |
| Output $/Mtok | $50.00 | $1.20 |
| Coding index | 84.2 | 37.2 |
| Independent measurements behind it | 5 | 3 |
| Cost per solved task | Not computable | $0.62 |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Claude Fable 5.1 better than MiniMax M2.5 for coding?
Pick Claude Fable 5.1 for coding: it scores 84.2 on the Vibe Coding Index against 37.2 for MiniMax M2.5. Pick MiniMax M2.5 for output tokens 41.7x cheaper ($1.20 vs $50.00 per million).
Which is cheaper, Claude Fable 5.1 or MiniMax M2.5?
Claude Fable 5.1 costs $10.00 per million input tokens and $50.00 per million output tokens; MiniMax M2.5 costs $0.30 and $1.20. Cost per solved task is known for MiniMax M2.5 only.
Which has the bigger context window, Claude Fable 5.1 or MiniMax M2.5?
Claude Fable 5.1, with 1M tokens against 205K.
How many benchmarks is the Claude Fable 5.1 vs MiniMax M2.5 comparison based on?
57 benchmarks have a result for both models as of October 22, 2026. Claude Fable 5.1's coding index rests on 5 independent benchmarks and MiniMax M2.5's on 3. Where only one model has a result, the page says so instead of naming a winner.