Short verdict: Klara and the Sun is worth reading if you like a book that trusts you to fill in the gaps. It's quiet. It's slow on purpose. And it leaves its biggest questions open. Critics mostly loved it. Readers are cooler. If you want a fast plot and clear answers, skip it. If you want a short, strange, tender book that keeps working on you after you close it, read it before the film opens in US cinemas on 23 October.
Spoilers: none above the marked spoiler section near the end. The ending and Josie's illness are only discussed there.
Strengths and weaknesses
Strengths
- Klara's voice. The Guardian compared its "beguiling simplicity" to Kathy H in Never Let Me Go.
- It makes you do some of the work. The Guardian called it "a satisfyingly collaborative read" because Ishiguro only hints at how the world works.
- The way Klara sees. The Atlantic described her vision breaking into "a robot cubism" at emotional moments.
- It's short. About 300 pages, depending on the edition.
- An AI narrator who wants to love well feels more pointed in 2026 than it did in 2021.
Weaknesses
- The world stays vague. Ishiguro drip-feeds the details, and Strange Horizons' reviewer called the background vague.
- Klara's odd phrasing can grate. A few critics collected on Book Marks found her narration heavy-handed or awkward.
- The ending divides people. Strange Horizons' reviewer felt it was unearned. Others found it hopeful.
- The NYT's Radhika Jones, positive overall, said it doesn't reach the artistic heights of Ishiguro's past work.
What it's about (no spoilers)
Klara is an AF, an Artificial Friend. She's a solar-powered robot companion sold in a store to families who want company for their kids. She spends her days in the shop watching the street and the Sun move across the sky.
Then a girl named Josie picks her. Josie is 14 and lives with her mother out on the prairie. She's sick. Klara goes home with them, and the rest of the book is Klara trying to understand this family and help the girl she was bought for.
The world around them is only half explained. Some kids are "lifted," which The Atlantic reads as genetic editing to boost them at school. Kids who aren't lifted, like Josie's neighbour Rick, face much worse prospects. The Atlantic's reviewer put it starkly: unlifted kids have "a less than 2 percent chance" of getting into a decent university. You piece most of this together from small hints.
This was Kazuo Ishiguro's first new novel since he won the Nobel Prize in 2017. It came out on 2 March 2021, debuted at No. 6 on the New York Times fiction list, and was longlisted for the Booker Prize.
Klara's voice is the whole book
Everything comes through Klara. That's the big choice, and it's why people love or bounce off this book.
She notices everything but understands only some of it. She has gaps in her vocabulary, so she invents words. Phones are "oblongs." Smart clothes are "high-ranking." The Atlantic said her voice may sound childlike, but "she speaks in prose poetry."
She also sees in boxes. When a scene gets emotional, her vision splits into panels. The Guardian called it a "migraine-ish slant." It's a clever way to show feeling through a narrator who can't quite name hers.
If that voice clicks for you, the book is a pleasure. If it doesn't, it can feel like reading through frosted glass. Several of the mixed reviews landed there.
Why it's slow on purpose
Not much happens for long stretches. Klara watches. She waits for the Sun. She studies Josie and her mother.
That's the design. The Guardian's reviewer said Ishiguro "only drip-feeds to the reader hints and suggestions about the shape of this futuristic world," and that we're left to do much of the imagining ourselves. The slowness is where that imagining happens.
The Atlantic made a similar point from a different angle. It said the book "doesn't strive for uncanniness. It aspires to enchantment." Klara treats the Sun almost like a god. The book asks you to sit inside that belief instead of laughing at it.
So is it a hard read? Not in the words. The sentences are plain. It's hard in a different way. It asks for patience, and it doesn't explain itself.
Why an AI narrator hits differently now
When the book came out, an AI companion was still mostly an idea. The Atlantic called Klara "Alexa, super-enhanced," the kind of machine researchers in affective computing were trying to build.
In 2026 it's a lot less hypothetical, and that makes Klara's questions land harder. What does she actually feel? Is her loyalty real? And who decides when she's no longer needed?
The book doesn't answer those. The Atlantic said "Klara and the Sun resists conclusions," and ends on questions like "Whose consciousness is limited, ours or a machine's?" That's the point of the book, not a flaw in it.
What critics said, good and bad
Most of the big reviews were strong. The Guardian's Alex Preston called it "a brilliant one" and ended with "Ishiguro has written another masterpiece." The Christian Science Monitor called it "a surprisingly warm morality tale about love, heart, hope, empathy." Book Marks, which collects critic reviews, shows mostly rave and positive ratings, with several mixed ones.
The mixed reviews are worth knowing about before you start:
- The ending. Paul Kincaid at Strange Horizons felt Ishiguro lost his nerve at the end and that the finish was unearned.
- Klara's narration. Ian J. Battaglia at the Chicago Review of Books thought the fairy-tale framing sometimes became a crutch and that Klara's narration tells more than it shows.
- The phrasing. Carrie Callaghan at the Washington Independent Review of Books said Klara's limited understanding frustrates the reader, and pointed to her strange diction and awkward phrasing.
- Not a new idea. Ian Mond at Locus felt Klara's view of human relationships was familiar from genre fiction, and found the ending the most disappointing part.
- The NYT. Radhika Jones was positive overall, but said it doesn't reach the artistic heights of Ishiguro's past books, and that Klara is hard to empathise with on the page, "which is maybe the point."
Readers are cooler than critics. On Goodreads it averages 3.73 from more than 480,000 ratings. That's solid, but it's not a crowd-pleaser score.
Who should skip it
Skip it, or at least wait, if:
- You want a plot that moves. This one drifts.
- You want the world fully explained. It won't be.
- You want a clear ending. You'll get a feeling, not an answer.
- You didn't get on with Never Let Me Go. The Guardian says this book "feels very much of a piece with" it.
Read it if you liked Never Let Me Go, if you like books that leave room for you, or if you want one novel about AI that's more about love than about robots taking over.
Klara and the Sun book vs movie
Here's only what was confirmed before the film's release.
- Who made it. Taika Waititi directs. He wrote it with Dahvi Waller. Ishiguro is an executive producer. Michael Giacchino did the score.
- Cast. Jenna Ortega plays Klara. Amy Adams plays the Mother. Mia Tharia plays Josie and Aran Murphy plays Rick. Steve Buscemi and Natasha Lyonne also star.
- Release. It premieres at the BFI London Film Festival on 15 October 2026, then opens in the US on 23 October through Sony's Columbia Pictures.
- Rating. It's rated PG-13 for "thematic elements, some violence and strong language," according to Common Sense Media's listing, and runs 116 minutes.
- One confirmed change. In the book, Josie's father lives apart from the family but is part of the story. The Monitor quotes a line of his about "the human heart." For the film, Simon Baker was cast as him, but his scenes were cut.
The film's official synopsis says Klara's "innocent wonder and unwavering loyalty begin to heal the family and bring light to Josie's complicated world." That's a warmer pitch than the book's slow unease. No other changes had been confirmed at the time of writing.
Should you read it first? Yes, if you can. The book is short. And so much of it lives inside Klara's head that the film will have to show it from the outside. Reading it first lets you meet her the way Ishiguro wrote her.
FAQ
Is Klara and the Sun a good read? Yes, if you like quiet literary fiction. Critics mostly praised it, and it was longlisted for the Booker. Readers who want a fast plot tend to rate it lower.
Is Klara and the Sun a hard read? The language is simple. What makes it hard is the pace and the gaps. The book hints at its world rather than explaining it, so you have to be patient.
How long is Klara and the Sun? About 300 pages. Penguin Random House lists the US hardcover and paperback at 320 pages. Other editions run shorter.
What are critics saying about Klara and the Sun? Mostly good things. The Guardian called it "another masterpiece." The mixed reviews focus on the ending, Klara's unusual voice, and the vague world.
What are some negative reviews of Klara and the Sun? Strange Horizons felt the ending was unearned. The Chicago Review of Books found the narration heavy-handed. The NYT said it doesn't reach the heights of Ishiguro's best.
What's the point of Klara and the Sun? It asks what makes a person irreplaceable, and whether love from a machine counts. The Monitor framed it around that question: what makes a person "special and individual." The book leaves you to decide.
When does the Klara and the Sun movie come out? It premieres at the BFI London Film Festival on 15 October 2026 and opens in US cinemas on 23 October 2026.
What is the Klara and the Sun movie rated? PG-13, for thematic elements, some violence and strong language, according to Common Sense Media's listing.
Spoiler section: the ending explained
Stop here if you haven't read it.
What disease did Josie have? Josie's illness is tied to being lifted. The Atlantic describes her as suffering from its side effects. Her older sister, Sal, died before her, and Klara learns the lifting process carries real risk.
The Mother's plan. Josie's mother has been taking her to sit for a "portrait." It isn't a painting. It's a lifelike AF body. If Josie dies, Klara is meant to move into it and become her continuation. That's the darkest idea in the book, and it's why Klara's study of Josie matters so much.
Klara's deal with the Sun. Klara believes the Sun can heal people. She offers to destroy the Cootings Machine, a polluting machine that blocks the Sun, in exchange for Josie's life. She does it, sacrificing some of the solution she carries in her head, even though it may weaken her. Josie gets worse anyway, so Klara goes back and pleads again. Then, when Josie is near death, the clouds part and sunlight floods her room. Josie starts to get better right away.
Did the Sun save her? The book never says. The Atlantic noted Klara's plan is "so bizarre that the reader may suspect her software is glitching." That's the ambiguity that "ending explained" searches are trying to settle. There's no hidden answer. Ishiguro leaves it open.
How it ends. Josie recovers over the following months and starts to drift away from Rick. She leaves for college. Klara ends up in a yard for scrapped AFs. She can't move anymore, but she's content, going over her memories.
The Monitor's Heller McAlpin said that final scene "may strike readers as desolate," but that Ishiguro plays up its hopeful side. Klara comes to see that what was special about Josie wasn't inside Josie. In the line the Monitor quotes, "It was inside those who loved her." McAlpin's take: "Corny? Well, yes." But also, in her words, "wise and sweet." Strange Horizons felt the opposite and found the sunny finish unearned. Where you land on that probably decides how you feel about the whole book.
Read it before you scroll
Klara and the Sun is a good test of whether you can still sit with a quiet book. It's short, it's patient, and it rewards attention. If you want help reading first and scrolling second, that's exactly what Read First is for.