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Claude Sonnet 5 (Free)
anthropic·anthropic/claude-sonnet-5-free·GA·Closed·claude-sonnet series·NEW
Everyday Claude agent model for coding, planning, browsing, and general work
At a glance
Reference price$0 / $0 per 1M
Cache read $0 · ZenMux
Lowest paidNo paid channels
1 more $0 channels
Context1,000,000
Output limit128,000
Capabilities
✓ Reasoning✓ Tool use? Structured outputTemperature✓ Attachments
Modalities
TextImagePDF
Knowledge cutoff2026-01-31
Released / updated2026-06-30 / 2026-06-30
Quality & performance
Artificial Analysis doesn't cover this model (267 of 2059 have data). Quality data comes from independent evals covering widely used models.
Available at 1 providers0 with public prices · 1 free
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| ZenMux | Gateway | Free | $0 | $0 | 1,000,000 | 128,000 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Your usage cost
This model is $0 across all listed channels (ZenMux).
Benchmark
No upstream benchmark data for this model. For quality, see the Artificial Analysis intelligence score above.
Reasoning control
effort = loweffort = mediumeffort = high
Related models
Claude Sonnet 5same series$2.00 / $10.00Claude Sonnet 5 Thinkingsame series$2.00 / $10.00Claude Sonnet 5 (JP)same series$2.00 / $10.00
Price historyone sample accumulated per data sync
Input listOutput listMin blended