Knowledge
Like-for-like- Claude Fable 5
- 83.5
- Supported · #2/181
- GPT-4.1 mini
- 35.8
- Supported · #159/181
- Basis
- BenchAlign lane · 2 vs 2 public rows
- Reading
- Claude Fable 5 leads
Claude Fable 5 vs GPT-4.1 mini
Updated September 4, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.
Decision reading
Claude Fable 5 has the higher public score, 80.9 versus 34.46, and the 90% score intervals do not overlap.
1 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.
Share or export
Which one for your work
Recommendations appear only when a shared evidence basis or an explicit operating constraint supports the call. Secondary and unsupported use cases stay disclosed below the initial list.
Chat turn cost
1K fresh input + 500 output tokens
GPT-4.1 mini
GPT-4.1 mini has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.
Confidence: listed-rates
Cache-heavy agent loop cost
200K cached + 20K fresh input + 10K output tokens
GPT-4.1 mini
GPT-4.1 mini has the lower estimated token cost for this stated workload. GPT-4.1 mini has no published cached-input rate, so cached tokens use its listed input rate.
Confidence: rate-fallback
Show secondary and unsupported calls
Repository review cost
50K fresh input + 3K output tokens
GPT-4.1 mini
GPT-4.1 mini has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.
Confidence: listed-rates
Coding work
Code generation, repair, and software-engineering tasks
Not enough matched evidence
GPT-4.1 mini is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like.
Confidence: limited
Agentic work
Tool use, computer use, and multi-step task completion
Not enough matched evidence
GPT-4.1 mini is scored on Estimated evidence for agentic, so the reading is directional rather than like-for-like.
Confidence: limited
Long documents
Prompts that approach the documented context limit
No clear pick
The documented context windows are equal.
Confidence: documented
What is actually comparable
Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.
17 Claude Fable 5 only
1 Shared
4 GPT-4.1 mini only
- Shared results
- 1
- Claude Fable 5 only
- 17
- GPT-4.1 mini only
- 4
- Like-for-like categories
- 1 / 8
3 categories rest on Estimated evidence or different evidence sets. Those rows remain visible for coverage context but do not name a winner.
Category results, on a stated basis
Each row shows the public-lane category score for both models: the BenchAlign lane for agentic, coding, and knowledge, and the weighted public rows elsewhere, with the same rank each model page reports. A row is like-for-like only when both scores rest on Supported evidence or the same weighted set. Directional and not-comparable rows remain visible, but they never receive a winner.
Agentic
Directional only- Claude Fable 5
- 74.8
- Supported · #3/151
- GPT-4.1 mini
- 35.2
- Estimated · #131/151
- Basis
- BenchAlign lane · 4 vs 0 public rows
- Reading
- Directional only
Coding
Directional only- Claude Fable 5
- 76.9
- Supported · #2/183
- GPT-4.1 mini
- 37.1
- Estimated · #153/183
- Basis
- BenchAlign lane · 10 vs 1 public rows
- Reading
- Directional only
Instruction following
Directional only- Claude Fable 5
- 78.3
- #54/120
- GPT-4.1 mini
- 44.2
- #93/120
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Directional only
Reasoning
Not comparable- Claude Fable 5
- 76.2
- #11/22
- GPT-4.1 mini
- 53.6
- Unranked · 2 rankable rows
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Math
Not comparable- Claude Fable 5
- Not ranked
- GPT-4.1 mini
- 28.5
- Unranked · 1 rankable row
- Basis
- Provisional lane · 0 vs 1 weighted rows
- Reading
- Not comparable
Multilingual
Not comparable- Claude Fable 5
- Not ranked
- GPT-4.1 mini
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Multimodal
Not comparable- Claude Fable 5
- 62.5
- Unranked · 2 rankable rows
- GPT-4.1 mini
- 46.5
- Unranked · 1 rankable row
- Basis
- Provisional lane · 1 vs 0 weighted rows
- Reading
- Not comparable
| Category | Claude Fable 5 | GPT-4.1 mini | Basis | Reading |
|---|---|---|---|---|
| Knowledge | 83.5Supported · #2/181 | 35.8Supported · #159/181 | Like-for-likeBenchAlign lane · 2 vs 2 public rows | Claude Fable 5 leads |
| Agentic | 74.8Supported · #3/151 | 35.2Estimated · #131/151 | Directional onlyBenchAlign lane · 4 vs 0 public rows | Directional only |
| Coding | 76.9Supported · #2/183 | 37.1Estimated · #153/183 | Directional onlyBenchAlign lane · 10 vs 1 public rows | Directional only |
| Instruction following | 78.3#54/120 | 44.2#93/120 | Directional onlyProvisional lane · 0 vs 0 weighted rows | Directional only |
| Reasoning | 76.2#11/22 | 53.6Unranked · 2 rankable rows | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Math | Not ranked | 28.5Unranked · 1 rankable row | Not comparableProvisional lane · 0 vs 1 weighted rows | Not comparable |
| Multilingual | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Multimodal | 62.5Unranked · 2 rankable rows | 46.5Unranked · 1 rankable row | Not comparableProvisional lane · 1 vs 0 weighted rows | Not comparable |
Ranks count the models scored in each category’s lane, so the agentic, coding, and knowledge denominators (BenchAlign) differ from the provisional-lane categories. Unranked scores sit on the lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.
Shape of the matched evidence
Only shared public evidence is shown. Sparse evidence stays a ruled list rather than being closed into a radar shape.
Too few matched category axes support a radar. The ruled list below shows only shared benchmark results; positions use each benchmark’s normalized display scale when available.
SWE-bench Verified
Coding
What each workload costs
Three fixed token mixes turn per-token rates into comparable decisions. Each scenario states context fit and whether cached input had to fall back to the published list-input rate.
Chat turn
1K fresh input + 500 output tokens
- Claude Fable 5
- $0.035
- Fits in one request
- GPT-4.1 mini
- $0.0012
- Fits in one request
GPT-4.1 mini has the lower modeled cost
Costs use the listed standard API rates.
Repository review
50K fresh input + 3K output tokens
- Claude Fable 5
- $0.65
- Fits in one request
- GPT-4.1 mini
- $0.0248
- Fits in one request
GPT-4.1 mini has the lower modeled cost
Costs use the listed standard API rates.
Cache-heavy agent loop
200K cached + 20K fresh input + 10K output tokens
- Claude Fable 5
- $0.9
- Fits in one request
- GPT-4.1 mini
- $0.104
- Fits in one request
- Cached input priced at the published list-input rate
GPT-4.1 mini has the lower modeled cost
GPT-4.1 mini has no published cached-input rate, so cached tokens use its listed input rate.
Specification differences
Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.
SpecificationClaude Fable 5GPT-4.1 mini
Context window
Maximum documented context; output-token limits may be lower.
Claude Fable 5
GPT-4.1 mini
1M
API model ID
Claude Fable 5
claude-fable-5
Anthropic model overviewGPT-4.1 mini
Not sourced
Cached-input rate
A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.
Claude Fable 5
$1 per 1M cached input tokens
Claude API pricingGPT-4.1 mini
Not published
Documented inputs
Claude Fable 5
text, image
Anthropic model overviewGPT-4.1 mini
Not sourced
Documented outputs
Claude Fable 5
GPT-4.1 mini
Not sourced
Provider availability
Claude Fable 5
Generally Available · Claude API
Anthropic model overviewGPT-4.1 mini
Not sourced
Reasoning profile
Claude Fable 5
Reasoning
GPT-4.1 mini
Non-Reasoning
Weight access
Claude Fable 5
Proprietary
GPT-4.1 mini
Proprietary
License
Claude Fable 5
Proprietary
GPT-4.1 mini
Proprietary
Release date
Claude Fable 5
2026-06-09
GPT-4.1 mini
2025-04-14
If you already use one of these models
- Deployment change
- The models list different providers, so authentication, endpoint behavior, limits, and feature support may change.
- Quality signal
- Claude Fable 5 has the higher public score, 80.9 versus 34.46, and the 90% score intervals do not overlap.
- Workload cost
- Repository review: $0.65 vs $0.0248. Cache-heavy agent loop: $0.9 vs $0.104.
- Context tradeoff
- Both models list 1M.
Run the same representative tasks against both endpoints before changing production traffic.
Benchmark evidence
The full public result ledger is available for audit without forcing a wide desktop table onto a phone.
Browse raw public benchmark evidence22 rows
Agentic
Terminal-Bench 3.0
Claude Fable 534.0%SourceGPT-4.1 mini—Not directly comparable
Terminal-Bench 2.0
Claude Fable 584.3%SourceGPT-4.1 mini—Not directly comparable
OSWorld-Verified
Claude Fable 585%SourceGPT-4.1 mini—Not directly comparable
Terminal-Bench 2.1 (Vals)
Claude Fable 580.5%SourceGPT-4.1 mini—Not directly comparable
Coding
SWE-bench Verified
Claude Fable 595%SourceGPT-4.1 mini23.6%SourceClaude Fable 5 leads this result
SWE-bench Pro
Claude Fable 580%SourceGPT-4.1 mini—Not directly comparable
FrontierSWE v2
Claude Fable 548.0%SourceGPT-4.1 mini—Not directly comparable
FrontierCode 1.1 Main
Claude Fable 553.5%SourceGPT-4.1 mini—Not directly comparable
Terminal-Bench 2.0
Claude Fable 584.3%SourceGPT-4.1 mini—Not directly comparable
cursorBench31
Claude Fable 570.6%SourceGPT-4.1 mini—Not directly comparable
cursorBench32
Claude Fable 570.5%SourceGPT-4.1 mini—Not directly comparable
VulcanBench v3
Claude Fable 589.5%SourceGPT-4.1 mini—Not directly comparable
LiveCodeBench (Vals)
Claude Fable 589.8%SourceGPT-4.1 mini—Not directly comparable
SWE-bench (Vals)
Claude Fable 595.0%SourceGPT-4.1 mini—Not directly comparable
Knowledge
Math
FrontierMath v2 (Tiers 1-3)
Claude Fable 5—GPT-4.1 mini4.483%SourceNot directly comparable
Multimodal
Instruction following
IFEval
Claude Fable 5—GPT-4.1 mini88.5%SourceNot directly comparable
Frequently asked questions
Which is better, Claude Fable 5 or GPT-4.1 mini?
Claude Fable 5 has the higher public score, 80.9 versus 34.46, and the 90% score intervals do not overlap. That is the clearest overall quality signal in the current public data.
Which is better for coding, Claude Fable 5 or GPT-4.1 mini?
Claude Fable 5 scores higher for coding on the public lane, 76.9 to 37.1. GPT-4.1 mini is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like. BenchLM does not name a winner for coding from a directional reading; read the shared benchmark rows directly and test the models on the same task set.
Which is better for agentic tasks, Claude Fable 5 or GPT-4.1 mini?
Claude Fable 5 scores higher for agentic tasks on the public lane, 74.8 to 35.2. GPT-4.1 mini is scored on Estimated evidence for agentic tasks, so the reading is directional rather than like-for-like. BenchLM does not name a winner for agentic tasks from a directional reading; read the shared benchmark rows directly and test the models on the same task set.
Which costs less, Claude Fable 5 or GPT-4.1 mini?
For the stated presets, chat costs $0.035 on Claude Fable 5 and $0.0012 on GPT-4.1 mini; repository review costs $0.65 and $0.0248; the cache-heavy agent loop costs $0.9 and $0.104. GPT-4.1 mini has no published cached-input rate, so cached tokens use its listed input rate.
Which has the larger context window, Claude Fable 5 or GPT-4.1 mini?
Both models list the same context window, 1M.
Related comparisons
Last updated September 4, 2026
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