On this page (6 sections)
Quick answer
Which Claude model should I use in 2026? For most people and most work, Claude Opus 5 — released 24 July 2026, it lands within a whisker of Anthropic's flagship on coding and agent tasks while costing half as much ($5 vs $10 per million input tokens). Step up to Claude Fable 5 only for the hardest long-horizon autonomous work, drop to Sonnet 5 when you want near-Opus quality at high volume, and use Haiku 4.5 for fast, cheap, simple jobs.
Key takeaways
- Claude Opus 5 (Jul 2026) is the new sweet spot: near-flagship intelligence at $5/$25 per million tokens.
- Claude Fable 5 is the flagship — Anthropic's most capable model, priced at $10/$50 for the ceiling on agentic work.
- Claude Sonnet 5 ($3/$15) is the volume workhorse; Haiku 4.5 ($1/$5) is the speed-and-cost pick.
- All the top models carry a 1M-token context window and 128K max output.
- This matters for builders: Cursor, Bolt, Replit and Lovable all lean on Anthropic's Claude models — the tier you pick changes how well they reason.
at a glance
| Models covered | Opus 5, Fable 5, Sonnet 5, Haiku 4.5 (+ Mythos 5) |
| Newest | Claude Opus 5 — released 24 Jul 2026 |
| Best value | Claude Opus 5 — $5 / $25 per million tokens |
| Most capable | Claude Fable 5 — $10 / $50 per million tokens |
| Context window | 1M tokens on every top model |
Anthropic spent the first half of 2026 releasing models faster than most people could keep track of them. Fable 5 arrived in June. Sonnet 5 followed weeks later. Then Opus jumped from 4.8 straight to Opus 5 on 24 July. The result is a lineup with genuinely different tiers and a naming scheme that hides which one you should actually reach for.
This guide fixes that. Every number below is pulled from Anthropic’s own documentation, and the framing comes from the thing we care about on this site: these are the models running inside the AI app builders we test, so picking the right one changes what those tools can do.
The 2026 Claude lineup at a glance
Four models cover the spread from “cheap and instant” to “most capable model Anthropic ships.” Prices are per million tokens, input / output.
| Model | Best for | Context | Price (in/out) | |
|---|---|---|---|---|
| Opus 5 | Everyday best value — coding & agents | 1M | $5 / $25 | |
| Fable 5 | The absolute ceiling; long-horizon agents | 1M | $10 / $50 | |
| Sonnet 5 | Near-Opus quality at high volume | 1M | $3 / $15 | |
| Haiku 4.5 | Fast, cheap, simple tasks | 200K | $1 / $5 |
A few things worth knowing that the table can’t show. Fable 5 always runs with thinking on and is the only widely released model Anthropic calls “most capable.” Opus 5 is the newcomer that reset the value equation — same price as the old Opus 4.8, but Anthropic says it roughly doubles that model’s coding score. Sonnet 5 is running introductory pricing of $2/$10 through 31 August 2026 before it settles at $3/$15. And Mythos 5, which you’ll see mentioned, is a Fable 5 twin reserved for approved security customers through Project Glasswing — not something you can sign up for.
Which Claude model should you use?
Skip the benchmark tables and answer one question: what are you optimizing for?
Opus 5
The default. It gets within roughly 0.5% of the flagship on coding evals at half the cost, with a 1M context window. Unless you have a reason to pay more or less, start here.
Opus 5 explained →Fable 5
For the hardest autonomous, long-running agent work where the last few percent of capability is worth double the price. Otherwise it is overkill.
Fable 5 explained →Sonnet 5
When you are making a lot of calls and want most of Opus quality at a lower rate. The workhorse for production apps and chat features.
See the lineup →For anything latency-sensitive or high-throughput and simple — classification, quick summaries, routing — Haiku 4.5 at $1/$5 is the cheapest way to get near-frontier quality without waiting.
Opus 5 vs Fable 5: the comparison that matters
This is the decision most people are actually trying to make, so it’s worth being precise. Fable 5 is the flagship and holds the top of Anthropic’s own charts. Opus 5 is the one that launched in July at half the input price. On Anthropic’s coding benchmarks the gap is small: Opus 5 comes within about half a percent of Fable 5 on CursorBench, and on a couple of agent evaluations it actually wins. It also doubles the previous Opus generation on Anthropic’s Frontier-Bench coding test.
The honest read: pay for Fable 5 when you’re running the most demanding autonomous agents and the ceiling genuinely pays for itself. Use Opus 5 for everything else. We break both down in full in the Claude Opus 5 deep-dive and the Claude Fable 5 deep-dive.
How Claude powers the tools you actually build with
Here’s why any of this matters if you never open the API. The AI app builders we review don’t have their own intelligence — they call a frontier model, and for a lot of them that model is Claude. Agentic editors like Cursor and Bolt let you choose it outright, and prompt-to-app builders such as Lovable and Replit lean on Anthropic’s models to turn your prompt into working software.
So the model generation is a lever on your results. A builder pointed at Opus 5 reasons about your codebase very differently than one on an older model. The fastest way to put a current Claude model to work — without touching a single line of setup — is inside a builder that already runs on it.
Pricing, side by side
| Model | Input / M | Output / M | Max output | |
|---|---|---|---|---|
| Haiku 4.5 | $1 | $5 | 64K | |
| Sonnet 5 | $3 (intro $2) | $15 (intro $10) | 128K | |
| Opus 5 | $5 | $25 | 128K | |
| Fable 5 | $10 | $50 | 128K |
Prefer flat pricing to per-token billing? The chat apps bundle the top models: Claude Pro for individuals and Claude Max for heavy users, with Opus 5 as the new default on Max.
The bottom line
The lineup is less confusing than the names suggest. Opus 5 is the model most people should use — it reset the price-to-capability ratio in July 2026 and covers the vast majority of real work. Reach past it to Fable 5 only for the hardest agent tasks, drop to Sonnet 5 for volume, and keep Haiku 4.5 around for the fast, cheap jobs. And if you’re building rather than calling the API directly, the practical move is to run one of these models inside an app builder we’ve tested.
Frequently asked questions
What are all the Claude models in 2026?
Is Claude Opus 5 better than Fable 5?
How much do Claude models cost?
Which Claude model do AI app builders use?
What is the context window on Claude models?
Sources & data
- Anthropic — Introducing Claude Opus 5 (24 Jul 2026)
- Anthropic — Models overview (specs & pricing, accessed Jul 2026)
- Anthropic — Introducing Claude Fable 5 and Claude Mythos 5 (9 Jun 2026)
Review changelog
Jul 2026 — Published after the Claude Opus 5 launch; full lineup mapped