Claude Fable 5
anthropic/claude-fable-5
most capable for demanding reasoning & long-horizon agents.
cmd --model claude-fable-5
Intelligence index
62.1
Output speed
66.8 tok/s
Input
$10 /M
Output
$50 /M
Cache read
$1 /M
Agent-loop cost
$3.70 /M in
Context window
1M tokens
Released
June 9, 2026
Modalities
→
vs. the lineup
Claude Fable 5 beside its stablemates and nearest rivals. The ◆ marks the best value in each column across every row shown.
pin a rival:
| Model | Intelligence | Coding | Speed | Input $/M | Output $/M | Blended $/M | Context |
|---|---|---|---|---|---|---|---|
| Claude Opus 5 | 63.1◆ | 78◆ | 52.6◆ | $5◆ | $25◆ | $10◆ | 1M◆ |
| Claude Fable 5 ◆ | 62.1◆ | 76.5◆ | 66.8◆ | $10◆ | $50◆ | $20◆ | 1M◆ |
| Claude Opus 4.8 | 57.3◆ | 74.3◆ | —◆ | $5◆ | $25◆ | $10◆ | 1M◆ |
| Claude Sonnet 5 | 55.3◆ | 71.5◆ | 82.8◆ | $2◆ | $10◆ | $4◆ | 1M◆ |
| Claude Opus 4.7 | 55◆ | 73.6◆ | —◆ | $5◆ | $25◆ | $10◆ | 1M◆ |
| Claude Sonnet 4.6 | 48.4◆ | 63◆ | —◆ | $3◆ | $15◆ | $6◆ | 1M◆ |
| DeepSeek V4 Pro (latest)pinned | 45.3◆ | 59.4◆ | 63.3◆ | $0.66◆ | $1.98◆ | $0.99◆ | 1M◆ |
| DeepSeek V4 Flash (latest)pinned | 52◆ | 69.1◆ | 115.9◆ | $0.22◆ | $0.66◆ | $0.33◆ | 1M◆ |
coding performance
The Intelligence Index and its sub-scores, ranked against every scored model in the catalog. A metric that has not been measured for Claude Fable 5 has been left empty.
Coding Index
76.5
#4 of 40 scored
Terminal-Bench
84.6
#5 of 40 scored
Intelligence Index
62.1
#2 of 46 scored
Long-context reasoning
76.7
reasoning across a long context
SciCode
60.2
scientific coding
GPQA Diamond
92.6
graduate-level QA
usage calculator
How far a month of credits goes on Claude Fable 5.
Claude Fable 5 runs on Max and up — from $100/mo.
Input tokensfresh prompt
800Output tokensmodel reply
180Cache read tokensre-read context
50Kcost / request $0.067 · in $10 · out $50 · cache $1 per M
fresh input 12%output 13%cache reads 75%
Requests / 30 days
1.5K
$100 credits ÷ $0.067 per request
~299 quick fixes~60 bug fixes~10 feature PRs
what real work costs
Real coding tasks priced end to end on Claude Fable 5, from a quick lookup to a full-repo agent run.
One agent task
$1.18
180K in at 75% cache hit, 12K out
What you pay
$6.17 /M
all-in across every token that task touched
Sticker input
$10 /M
cache reads bill at $1 /M instead
| Task | Tokens in · out | Claude Fable 5 | Claude Opus 5 | Claude Haiku 4.5 |
|---|---|---|---|---|
| Quick lookup / one-liner | 8K · 1K | $0.07 | $0.03 | $0.0065 |
| Review a 500-line PR | 60K · 4K | $0.42 | $0.21 | $0.04 |
| Fix a bug (agent loop) | 180K · 12K | $1.18 | $0.59 | $0.12 |
| Refactor a module | 320K · 20K | $2.13 | $1.06 | $0.21 |
| Full-repo agent run | 900K · 45K | $4.93 | $2.47 | $0.49 |
frequently asked
What is Claude Fable 5 best for?
Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token context window. It is suited for long-running, complex, and asynchronous tasks that previously required frequent human check-ins. It is particularly strong at end-to-end work that would otherwise take a person hours, days, or weeks - taking on problems that are long-running, ambiguous, or highly multi-step. It executes well-scoped tasks with few mistakes, automatically self-correcting through verification loops, and ships with robust safeguards.
How much does Claude Fable 5 cost?
$10/M input and $50/M output, cache reads $1/M. In an agent loop most input is cache-read, so the effective input rate is about $3.70/M.Which plan do I need?
Available on Max and above.
How do I switch to it?
Run
cmd --model claude-fable-5, or type /model in a session and pick it. You can switch mid-session without losing context.Ship code that matches your taste
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Benchmarks from Artificial Analysis (v4.1)commandcode.ai/models/claude-fable-5