Claude Sonnet 5
anthropic/claude-sonnet-5
prev Sonnet, still fast & capable.
cmd --model claude-sonnet-5
Intelligence index
38.2
Coding index
71.5
Input
$2 /M
Output
$10 /M
Cache read
$0.20 /M
Agent-loop cost
$0.74 /M in
Context window
1M tokens
Released
June 30, 2026
Modalities
→
vs. the lineup
Claude Sonnet 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 | Input $/M | Output $/M | Blended $/M | Context |
|---|---|---|---|---|---|---|
| Claude Opus 5.5 | 57.6◆ | —◆ | $4◆ | $20◆ | $8◆ | 1M◆ |
| Claude Fable 5.1 | 53.4◆ | 81.6◆ | $10◆ | $50◆ | $20◆ | 1M◆ |
| Claude Fable 5 | 49.6◆ | 76.5◆ | $10◆ | $50◆ | $20◆ | 1M◆ |
| Claude Sonnet 5 ◆ | 38.2◆ | 71.5◆ | $2◆ | $10◆ | $4◆ | 1M◆ |
| Claude Sonnet 4.6 | 30.1◆ | 63◆ | $3◆ | $15◆ | $6◆ | 1M◆ |
| Claude Sonnet 5.5 | —◆ | —◆ | $2◆ | $10◆ | $4◆ | 1M◆ |
| DeepSeek V4 Pro (latest)pinned | 36◆ | 68.8◆ | $0.66◆ | $1.98◆ | $0.99◆ | 1M◆ |
| DeepSeek V4 Flash (latest)pinned | 34◆ | 69.1◆ | $0.15◆ | $0.60◆ | $0.26◆ | 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 Sonnet 5 has been left empty.
Coding Index
71.5
#23 of 54 scored
Terminal-Bench
80.5
#22 of 54 scored
Intelligence Index
38.2
#30 of 67 scored
Long-context reasoning
82
reasoning across a long context
SciCode
54.3
scientific coding
GPQA Diamond
91.1
graduate-level QA
usage calculator
How far a month of credits goes on Claude Sonnet 5.
Claude Sonnet 5 runs on Pro and up — from $20/mo.
Input tokensfresh prompt
800Output tokensmodel reply
180Cache read tokensre-read context
50Kcost / request $0.013 · in $2 · out $10 · cache $0.20 per M
fresh input 12%output 13%cache reads 75%
Requests / 30 days
1.5K
$20 credits ÷ $0.013 per request
~299 quick fixes~60 bug fixes~10 feature PRs
what real work costs
Real coding tasks priced end to end on Claude Sonnet 5, from a quick lookup to a full-repo agent run.
One agent task
$0.24
180K in at 75% cache hit, 12K out
What you pay
$1.23 /M
all-in across every token that task touched
Sticker input
$2 /M
cache reads bill at $0.20 /M instead
| Task | Tokens in · out | Claude Sonnet 5 | Muse Spark 1.3 | Claude Haiku 4.5 |
|---|---|---|---|---|
| Quick lookup / one-liner | 8K · 1K | $0.01 | $0.0063 | $0.0065 |
| Review a 500-line PR | 60K · 4K | $0.08 | $0.05 | $0.04 |
| Fix a bug (agent loop) | 180K · 12K | $0.24 | $0.13 | $0.12 |
| Refactor a module | 320K · 20K | $0.43 | $0.23 | $0.21 |
| Full-repo agent run | 900K · 45K | $0.99 | $0.54 | $0.49 |
frequently asked
How much does Claude Sonnet 5 cost?
$2/M input and $10/M output, cache reads $0.20/M. In an agent loop most input is cache-read, so the effective input rate is about $0.74/M.Which plan do I need?
Available on Pro and above.
How do I switch to it?
Run
cmd --model claude-sonnet-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 (v4.3)commandcode.ai/models/claude-sonnet-5