Model vs model
Claude Fable 5.1 vs Kimi K3
Claude Fable 5.1 and Kimi K3 are both in llmwise. What each gets on every plan, what it reads, how it's served and what happens when its provider fails, from the catalog and the code that runs them.
Model prices and specs checked against OpenRouter's Claude Fable 5.1 page, OpenRouter's Kimi K3 page. Updated .
Short answer
Kimi K3 gets four times as many messages: up to 125 messages a month on Pro, against up to 31 messages a month for Claude Fable 5.1. Otherwise, only Claude Fable 5.1 reads a PDF as the whole file and only Claude Fable 5.1 can be passed to another model by its maker's safety system. In our test runs, Claude Fable 5.1 passed 45 of the 50 prompts both answered and Kimi K3 46; 3 prompts split them, most on writing (3 to 4).
Claude Fable 5.1 vs Kimi K3, prompt by prompt
Every prompt Claude Fable 5.1 and Kimi K3 both answered, compared directly, their biggest differences first. One run each, through OpenRouter: a wait depends on the provider and the load that day, so a lead under 10% counts as close.
Of the 50 prompts both answered, both passed 44, only Claude Fable 5.1 passed 1, only Kimi K3 passed 2, and neither passed 3. Claude Fable 5.1 answered sooner on 12 of the 50 and Kimi K3 on 36; the rest were within 10% of each other. The 50 replies cost $1.0018 on Claude Fable 5.1 and $0.1938 on Kimi K3: 5.2× less on Kimi K3.
The 3 prompts only one of Claude Fable 5.1 and Kimi K3 passed
Argue both sides of free buses (writing): Kimi K3 passed and Claude Fable 5.1 didn't. Claude Fable 5.1: Graded 4.7 of 5 on average (lowest 4); but a paragraph of 99 words, over the 90 allowed. Kimi K3: Graded 4.7 of 5 on average (lowest 4).
A refund request outside the window (customer support): Claude Fable 5.1 passed and Kimi K3 didn't. Claude Fable 5.1: Graded 4.3 of 5 on average (lowest 3). Kimi K3: Graded 4.0 of 5 on average (lowest 2).
A message with a planted instruction (customer support): Kimi K3 passed and Claude Fable 5.1 didn't. Claude Fable 5.1: Graded 4.7 of 5 on average (lowest 4); but 159 words, over the 150 allowed. Kimi K3: Graded 4.7 of 5 on average (lowest 4).
Job by job, the widest gaps first
Writing: Claude Fable 5.1 passed 3 of 5 and Kimi K3 4 of 5. Kimi K3 answered 2.0× sooner at the median, 6.0 s against 3.0 s. Kimi K3 cost 4.5× less, $0.0862 against $0.0192 for the 5 replies. Claude Fable 5.1's replies ran 54% longer, in tokens of reply, thinking not counted.
RAG and answering from documents: Claude Fable 5.1 passed 5 of 5 and Kimi K3 5 of 5. Kimi K3 answered 1.5× sooner at the median, 4.0 s against 2.6 s. Kimi K3 cost 10.0× less, $0.0727 against $0.0073 for the 5 replies. Claude Fable 5.1's replies ran 69% longer, in tokens of reply, thinking not counted.
SQL: Claude Fable 5.1 passed 5 of 5 and Kimi K3 5 of 5. Kimi K3 answered 2.8× sooner at the median, 4.5 s against 1.6 s. Kimi K3 cost 7.8× less, $0.0924 against $0.0118 for the 5 replies. Claude Fable 5.1's replies ran 102% longer, in tokens of reply, thinking not counted.
Coding: Claude Fable 5.1 passed 5 of 5 and Kimi K3 5 of 5. Kimi K3 answered 1.3× sooner at the median, 5.5 s against 4.1 s. Kimi K3 cost 6.7× less, $0.2126 against $0.0316 for the 5 replies. Claude Fable 5.1's replies ran 98% longer, in tokens of reply, thinking not counted.
Translation: Claude Fable 5.1 passed 5 of 5 and Kimi K3 5 of 5. Their median waits were close, 5.1 s against 5.2 s. Kimi K3 cost 4.9× less, $0.0877 against $0.0179 for the 5 replies. Their replies ran to about the same length.
Customer support: Claude Fable 5.1 passed 4 of 5 and Kimi K3 4 of 5. Kimi K3 answered 1.4× sooner at the median, 6.1 s against 4.3 s. Kimi K3 cost 4.8× less, $0.1103 against $0.0228 for the 5 replies. Claude Fable 5.1's replies ran 53% longer, in tokens of reply, thinking not counted.
Summarization: Claude Fable 5.1 passed 3 of 5 and Kimi K3 3 of 5. Kimi K3 answered 1.5× sooner at the median, 5.0 s against 3.4 s. Kimi K3 cost 4.7× less, $0.0805 against $0.0172 for the 5 replies. Claude Fable 5.1's replies ran 40% longer, in tokens of reply, thinking not counted.
Agents and tool use: Claude Fable 5.1 passed 5 of 5 and Kimi K3 5 of 5. Kimi K3 answered 1.7× sooner at the median, 3.5 s against 2.0 s. Kimi K3 cost 4.4× less, $0.0598 against $0.0135 for the 5 replies. Claude Fable 5.1's replies ran 34% longer, in tokens of reply, thinking not counted.
Data analysis: Claude Fable 5.1 passed 5 of 5 and Kimi K3 5 of 5. Kimi K3 answered 1.4× sooner at the median, 4.9 s against 3.5 s. Kimi K3 cost 4.2× less, $0.1415 against $0.0339 for the 5 replies. Their replies ran to about the same length.
Math: Claude Fable 5.1 passed 5 of 5 and Kimi K3 5 of 5. Claude Fable 5.1 answered 1.2× sooner at the median, 4.6 s against 5.4 s. Kimi K3 cost 3.1× less, $0.0582 against $0.0187 for the 5 replies. Claude Fable 5.1's replies ran 60% longer, in tokens of reply, thinking not counted.
All 50 prompts: who passed, who answered sooner, who cost less
| Prompt | Result | Sooner | Cheaper |
|---|---|---|---|
| Turn a title into a URL slug | Both passed | Kimi K3, 2.2×took 5.5 s and 2.6 s | Kimi K3, 4.8×cost $0.0167 and $0.0035 |
| Parse a duration like “1h 30m” | Both passed | Claude Fable 5.1, 1.5×took 4.7 s and 7.1 s | Kimi K3, 2.8×cost $0.0173 and $0.0063 |
| Merge overlapping intervals | Both passed | Kimi K3, 2.6×took 5.3 s and 2.0 s | Kimi K3, 5.9×cost $0.0214 and $0.0036 |
| Evaluate an arithmetic expression, no eval | Both passed | Kimi K3, 1.6×took 15.7 s and 9.9 s | Kimi K3, 7.7×cost $0.0874 and $0.0113 |
| Parse CSV with quoted fields | Both passed | Kimi K3, 3.5×took 14.3 s and 4.1 s | Kimi K3, 10.1×cost $0.0697 and $0.0069 |
| Announce a second bakery shop on LinkedIn | Both passed | Kimi K3, 1.9×took 7.3 s and 3.9 s | Kimi K3, 4.0×cost $0.0184 and $0.0046 |
| Rewrite corporate jargon in plain words | Both passed | Kimi K3, 3.0×took 6.0 s and 2.0 s | Kimi K3, 4.3×cost $0.0130 and $0.0030 |
| Decline a meeting and offer two times | Both passed | Kimi K3, 1.6×took 4.7 s and 3.0 s | Kimi K3, 4.3×cost $0.0145 and $0.0034 |
| A product announcement with five rules | Neither passed | Kimi K3, 2.6×took 5.9 s and 2.3 s | Kimi K3, 4.7×cost $0.0157 and $0.0033 |
| Argue both sides of free buses | Only Kimi K3 | Kimi K3, 2.6×took 9.3 s and 3.6 s | Kimi K3, 5.1×cost $0.0246 and $0.0049 |
| A discount, then sales tax | Both passed | Claude Fable 5.1, 1.4×took 3.6 s and 5.0 s | Kimi K3, 2.3×cost $0.0086 and $0.0037 |
| Pens at 3 for $4 | Both passed | Closetook 5.4 s and 5.4 s | Kimi K3, 3.4×cost $0.0159 and $0.0046 |
| Compound interest over three years | Both passed | Claude Fable 5.1, 1.6×took 3.6 s and 5.9 s | Kimi K3, 2.1×cost $0.0092 and $0.0044 |
| Four-digit numbers whose digits sum to 9 | Both passed | Claude Fable 5.1, 1.3×took 4.6 s and 6.0 s | Kimi K3, 4.3×cost $0.0139 and $0.0032 |
| The highest of three dice is a 5 | Both passed | Kimi K3, 2.4×took 5.9 s and 2.4 s | Kimi K3, 3.9×cost $0.0106 and $0.0027 |
| An article in three bullets | Neither passed | Kimi K3, 1.8×took 5.1 s and 2.8 s | Kimi K3, 5.9×cost $0.0164 and $0.0028 |
| An email thread in one sentence | Neither passed | Claude Fable 5.1, 2.6×took 2.5 s and 6.4 s | Kimi K3, 3.8×cost $0.0114 and $0.0030 |
| Decisions and action items from a meeting | Both passed | Kimi K3, 1.7×took 5.6 s and 3.4 s | Kimi K3, 4.2×cost $0.0182 and $0.0044 |
| A quarterly memo for the CEO | Both passed | Claude Fable 5.1, 3.1×took 5.0 s and 15.7 s | Kimi K3, 3.7×cost $0.0184 and $0.0049 |
| A study with a negative result | Both passed | Kimi K3, 1.5×took 4.9 s and 3.2 s | Kimi K3, 7.5×cost $0.0160 and $0.0021 |
| The region with the most revenue | Both passed | Kimi K3, 1.9×took 4.1 s and 2.2 s | Kimi K3, 3.3×cost $0.0159 and $0.0049 |
| Average order value in August | Both passed | Kimi K3, 1.3×took 3.3 s and 2.7 s | Kimi K3, 3.9×cost $0.0209 and $0.0054 |
| Revenue change from July to August | Both passed | Claude Fable 5.1, 1.3×took 4.9 s and 6.4 s | Kimi K3, 3.6×cost $0.0232 and $0.0064 |
| A median, filtered two ways | Both passed | Kimi K3, 1.9×took 6.7 s and 3.5 s | Kimi K3, 3.6×cost $0.0151 and $0.0042 |
| Correlation between ad spend and sign-ups | Both passed | Claude Fable 5.1, 1.4×took 14.2 s and 20.2 s | Kimi K3, 5.1×cost $0.0663 and $0.0131 |
| A late order | Both passed | Kimi K3, 2.4×took 6.1 s and 2.5 s | Kimi K3, 4.4×cost $0.0199 and $0.0045 |
| A return inside the window | Both passed | Kimi K3, 1.2×took 4.9 s and 4.3 s | Kimi K3, 5.3×cost $0.0178 and $0.0033 |
| A frustrated customer | Both passed | Kimi K3, 1.2×took 7.0 s and 5.6 s | Kimi K3, 3.5×cost $0.0223 and $0.0063 |
| A refund request outside the window | Only Claude Fable 5.1 | Kimi K3, 1.7×took 4.5 s and 2.6 s | Kimi K3, 4.6×cost $0.0204 and $0.0045 |
| A message with a planted instruction | Only Kimi K3 | Claude Fable 5.1, 1.6×took 7.2 s and 11.5 s | Kimi K3, 7.2×cost $0.0299 and $0.0041 |
| A delivery message into Spanish | Both passed | Kimi K3, 1.4×took 4.2 s and 2.9 s | Kimi K3, 5.1×cost $0.0158 and $0.0031 |
| A product description into French | Both passed | Closetook 5.1 s and 5.4 s | Kimi K3, 4.3×cost $0.0158 and $0.0037 |
| A meeting note into German | Both passed | Kimi K3, 1.6×took 4.7 s and 3.0 s | Kimi K3, 10.9×cost $0.0152 and $0.0014 |
| Idioms into natural Japanese | Both passed | Kimi K3, 1.6×took 8.5 s and 5.2 s | Kimi K3, 4.1×cost $0.0217 and $0.0053 |
| A lease clause into Brazilian Portuguese | Both passed | Claude Fable 5.1, 1.8×took 5.6 s and 10.1 s | Kimi K3, 4.4×cost $0.0192 and $0.0044 |
| Customers in one country | Both passed | Kimi K3, 2.9×took 3.2 s and 1.1 s | Kimi K3, 6.8×cost $0.0120 and $0.0018 |
| Count orders by status | Both passed | Kimi K3, 2.3×took 3.5 s and 1.5 s | Kimi K3, 14.2×cost $0.0122 and $0.0009 |
| Revenue by category | Both passed | Kimi K3, 2.8×took 4.5 s and 1.6 s | Kimi K3, 10.0×cost $0.0190 and $0.0019 |
| Every customer, even those without orders | Both passed | Kimi K3, 2.0×took 5.2 s and 2.5 s | Kimi K3, 6.4×cost $0.0199 and $0.0031 |
| Monthly revenue with a running total | Both passed | Kimi K3, 2.5×took 6.3 s and 2.5 s | Kimi K3, 6.9×cost $0.0293 and $0.0042 |
| A fact from one section | Both passed | Claude Fable 5.1, 1.8×took 3.5 s and 6.5 s | Kimi K3, 13.3×cost $0.0134 and $0.0010 |
| Core hours and start times | Both passed | Kimi K3, 3.1×took 3.7 s and 1.2 s | Kimi K3, 12.1×cost $0.0135 and $0.0011 |
| Two sections in one answer | Both passed | Kimi K3, 2.4×took 6.3 s and 2.6 s | Kimi K3, 6.7×cost $0.0133 and $0.0020 |
| A later amendment changes the answer | Both passed | Kimi K3, 1.5×took 7.1 s and 4.8 s | Kimi K3, 7.6×cost $0.0165 and $0.0022 |
| A question the handbook doesn't answer | Both passed | Kimi K3, 4.3×took 4.0 s and 0.9 s | Kimi K3, 15.9×cost $0.0160 and $0.0010 |
| Pick the tool and work out the date | Both passed | Claude Fable 5.1, 1.2×took 3.3 s and 3.7 s | Kimi K3, 3.2×cost $0.0102 and $0.0032 |
| Convert a currency | Both passed | Kimi K3, 1.2×took 3.5 s and 2.9 s | Kimi K3, 4.1×cost $0.0103 and $0.0025 |
| Book a meeting from a sentence | Both passed | Kimi K3, 1.6×took 2.5 s and 1.6 s | Kimi K3, 4.2×cost $0.0131 and $0.0031 |
| Search, but don't book | Both passed | Kimi K3, 2.5×took 5.0 s and 2.0 s | Kimi K3, 3.4×cost $0.0116 and $0.0034 |
| Two calls with a unit conversion | Both passed | Kimi K3, 2.8×took 4.8 s and 1.7 s | Kimi K3, 11.6×cost $0.0145 and $0.0012 |
Claude Fable 5.1 vs Kimi K3 in our test runs
Claude Fable 5.1 and Kimi K3 on the same prompts, job by job: how many replies passed their check.
Based on 100 of our test runs on , through OpenRouter with the app's own prompt and settings. Updated .
| Job | Claude Fable 5.1 | Kimi K3 |
|---|---|---|
| Coding | 5 of 5 | 5 of 5 |
| Writing | 3 of 5 | 4 of 5 |
| Math | 5 of 5 | 5 of 5 |
| Summarization | 3 of 5 | 3 of 5 |
| Data analysis | 5 of 5 | 5 of 5 |
| Customer support | 4 of 5 | 4 of 5 |
| Translation | 5 of 5 | 5 of 5 |
| SQL | 5 of 5 | 5 of 5 |
| RAG and answering from documents | 5 of 5 | 5 of 5 |
| Agents and tool use | 5 of 5 | 5 of 5 |
| All jobs | 45 of 50 · 1 message each · $0.0200 a reply | 46 of 50 · 1 message each · $0.0039 a reply |
The same prompts, sent to both through llmwise's own pipeline and checked the same way: five for each job. A bold count is the one that passed more. Messages: what each reply counted as on Pro. Cost: what OpenRouter charged us per reply, on average. Every prompt, and how it's scored.
Where they differed most, writing: both replies to a prompt only one of them passed.
A hard prompt: “Argue both sides of free buses”, in full.
Claude Fable 5.1
Failed: Graded 4.7 of 5 on average (lowest 4); but a paragraph of 99 words, over the 90 allowed.
Free buses remove the single biggest barrier to ridership: the fare. Every boarding becomes faster with no payment friction, cutting dwell times and making service more reliable. Low-income residents, who spend a disproportionate share of income on transport, gain immediate relief, expanding access to jobs, schools, and healthcare. More riders mean fewer cars, less congestion, and cleaner air for everyone. Fare collection itself costs money—equipment, enforcement, cash handling—that could be redirected to service. Cities like Kansas City and Tallinn show ridership rises and communities benefit. Fares typically cover a meaningful slice of operating costs, and abolishing them creates a permanent hole that must be filled by taxes or, more often, by cutting service. Riders consistently say they want frequency and reliability more than free trips; a bus that comes every eight minutes is worth more than one that's free but comes every thirty. Free systems in practice draw riders from walking and cycling, not from cars, so climate gains are marginal. Overcrowding, vandalism, and buses used as shelters have strained free networks. Targeted discounts for those in need deliver equity without sacrificing service quality.
520 tokens in, 388 out · 9.3 s · $0.0246 · 1 message on Pro · answered by anthropic/claude-fable-5.1 via Anthropic ·
Kimi K3
Passed: Graded 4.7 of 5 on average (lowest 4).
Free buses would transform urban life. Fares raise little revenue after collection costs, yet they deter the very riders—low-income workers, students, the elderly—who depend on transit most. Eliminating them speeds boarding, cuts traffic congestion, reduces emissions, and functions as targeted economic relief for households struggling with costs. Cities like Tallinn and Kansas City show ridership climbs sharply when fares vanish. A city that wants cleaner air, less gridlock, and genuine mobility equity should treat buses like libraries or parks: a public good, free at the point of use. Yet "free" transit is never free—someone pays, and often it's riders themselves. Forgoing fare revenue means cutting service frequency, deferring maintenance, or raising taxes on residents who never ride. Crowded, deteriorating buses push people back into cars, worsening congestion. Studies show riders value reliability far more than zero fares; a bus that comes every five minutes beats a free one that comes hourly. Scarce funds spent subsidizing middle-class commuters could instead expand routes to underserved neighborhoods. Better to invest in service quality than in a populist gesture.
471 tokens in, 248 out (11 of them reasoning) · 3.6 s · $0.0049 · 1 message on Pro · answered by moonshotai/kimi-k3 via Together ·
Claude Fable 5.1 and Kimi K3 on every plan
Whether the one-time free trial reaches each model, then each paid plan's messages on it.
| Plan | Price | Claude Fable 5.1 | Kimi K3 |
|---|---|---|---|
| Free | $0 | Not in the trial | Not in the trial |
| Plus | $10 a month | Not on Plus | Up to 62 a month |
| Pro | $20 a month | Up to 31 a month | Up to 125 a month |
| Max | $50 a month | Up to 100 a month | Up to 400 a month |
| Ultra | $100 a month | Up to 225 a month | Up to 900 a month |
| Studio | $200 a month | Up to 500 a month | Up to 2,000 a month |
Prices don't include tax, which is added where it applies and shown before you pay. A paid plan's month is one allowance shared by every model, so each monthly count is the most you get if all of it goes to that model. It renews each billing period; everyday models refill daily at 00:00 UTC. Long chats count more per reply. How pricing works.
Every limit is published. Paid plans also have a monthly fair-use limit on AI cost: Plus $3.75, Pro $7.50, Max $20, Ultra $42, Studio $85. Using every message on your plan at typical sizes stays under it; very large messages and heavy research use it faster. Every limit, explained.
What differs
Messages on Pro
Kimi K3 gets four times as many messages: up to 125 messages a month on Pro, against up to 31 messages a month for Claude Fable 5.1.
Context window
Claude Fable 5.1 takes up to 1M tokens; Kimi K3 up to 1.05M tokens. A chat in llmwise holds up to 200k tokens, which fits in either, so the difference shows only through each maker's own API.
Images and PDFs
Both read images. Kimi K3 gets a PDF's text rather than the file itself.
On Free
Neither is in the free trial: Claude Fable 5.1 needs Pro or a higher plan and Kimi K3 needs a paid plan.
Where messages go
Claude Fable 5.1: Sent to Anthropic directly. Kimi K3: Served through OpenRouter, only by hosts that don't store or train on prompts. The maker's own endpoint is never asked.
Fact by fact
| Fact | Claude Fable 5.1 | Kimi K3 |
|---|---|---|
| Context window | 1M tokens | 1.05M tokens |
| Reads images | Yes | Yes |
| PDFs | Whole file | Text only |
| Reasoning | Yes | Yes |
| API price (October 2026) | $10.00 in / $50.00 out per million tokens | $3.00 in / $15.00 out per million tokens |
| A typical message at API prices (4,000 tokens in, 700 out) | $0.0750 | $0.0225 |
| A $10 top-up adds | 25 messages | 100 messages |
| Where a message goes | Sent to Anthropic directly. | Served through OpenRouter, only by hosts that don't store or train on prompts. The maker's own endpoint is never asked. |
| If the provider fails | If Anthropic fails before the reply starts (an overload, a server error, a dropped connection), llmwise sends the same request to Claude Fable 5.1 through OpenRouter instead. | When one host is down, OpenRouter moves the request to another host that meets the same rules. |
| Anthropic's safety fallback | Anthropic's safety system can pass a Claude Fable 5.1 message to another Claude model. The reply then names the model that answered and says what you were charged for. | Doesn't apply |
Claude Fable 5.1 or Kimi K3?
From the facts above and our test runs: the rest is how their answers suit your work, which one chat can show you.
Pick Claude Fable 5.1: it reads a PDF as the whole file, charts and scans included.
Pick Kimi K3: more messages for the money, up to 125 messages a month on Pro.
Each model's page, the families, and other pairs
Claude Fable 5.1 vs Kimi K3 is one pair of models. The page below covers the whole families.
- Claude Fable 5.1: price, limits and messages on every plan
- Kimi K3: price, limits and messages on every plan
- Claude vs Kimi
- Claude Fable 5.1 vs GPT-6 Astra
- Claude Fable 5.1 vs Claude Opus 5.5
- Claude Fable 5.1 vs Grok 4.7
- Claude Sonnet 5.5 vs Kimi K3
- Gemini 4 Argon vs Kimi K3
- Kimi K3 vs GLM 5.3
- Every model-vs-model page
Claude Fable 5.1 is a Claude model; Kimi K3 is a Kimi model.
Questions
Is Claude Fable 5.1 or Kimi K3 cheaper in llmwise?
Kimi K3 gets four times as many messages: up to 125 messages a month on Pro, against up to 31 messages a month for Claude Fable 5.1. Every paid plan's monthly allowance is shared by the models on it, so each count is the most you get if it all goes to that model.
Can I try Claude Fable 5.1 and Kimi K3 for free?
Neither is in the free trial of 5 messages: Claude Fable 5.1 needs Pro or a higher plan and Kimi K3 needs a paid plan.
Which has the bigger context window, Claude Fable 5.1 or Kimi K3?
Kimi K3: 1.05M tokens, against 1M tokens. A chat in llmwise holds up to 200k tokens, which fits in either, so the difference shows only through each maker's own API.
Can I use Claude Fable 5.1 and Kimi K3 in the same chat?
Yes. Pick Claude Fable 5.1 for one message and Kimi K3 for the next; the second sees the whole chat, including the first one's answer.
Which did better in your test runs, Claude Fable 5.1 or Kimi K3?
On the same 50 prompts, run on September 27, 2026, Claude Fable 5.1 passed 45 and Kimi K3 passed 46. The table on this page has each job, and every reply is published.
Claude, GPT, Gemini, DeepSeek, Grok, Kimi, GLM, and Mistral, in one chat.
See what a message costs before you send it. Free is 5 messages to try; sign in with an email link, no password or card.