Models/Anthropic/Claude Sonnet 5

Claude Sonnet 5

✓ VERIFIED BY ANTHROPIC
Anthropic · Proprietary · Released Jun 30, 2026 · anthropic/claude-sonnet-5
Best $2.00 in / $10.00 out via Anthropic
CompareEstimate cost
1M contextVisionToolsReasoningStructured outputPrompt caching
Available from 12 providersUSD / MTOK · PRICES 23 MINUTES AGO · SPEED 9 MINUTES AGO
EST. MONTHLY COSTclick a row for detail · click headers to sort
PROVIDERINPUTOUTPUTCACHECONTEXTQUANTTTFTTPSUPTIME
TTFT/TPS: median (P50) over trailing 504h · chat10k profile (~10K in / 200 out) · measured against the provider API directly; ° = routed via OpenRouter (adds a hop) · methodology v1.1 · measured 9 minutes ago
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Quality benchmarksCURATED AUG 24, 2026
SWE-bench Verified85.2%SELF-REPORTEDsource ↗ 2026-08-24
LMArena Elo1461INDEPENDENTEntry: claude-sonnet-5-high (rank 45)source ↗ 2026-08-21
Terminal-Bench 2.174.6%INDEPENDENTScaffold: Claude Codesource ↗ 2026-07-09
Third-party reported results, hand-curated with sources — not measured by ModelIndex. Our own measured serving data (TTFT/TPS/SMOKE) is in the providers table above.
Pricing variants · USD / MTok in / out
STANDARD
$2.00 / $10.00
per MTok in / out
BATCH
$1.00 / $5.00
async batch
CACHE READ $0.20CACHE WRITE $2.50WEB SEARCH $0.01 / searchCACHE WRITE 1H $4.00 / MTok
Recent changesRSS ↗
Sep 23, 2026endpoint added · cheaperinference10 → 12
About

Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...

Specifications
Context window1,000,000
Max output128,000
Modalities intext, image, file
Modalities outtext
LicenseProprietary
ReleasedJun 30, 2026
TokenizerClaude
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[![Claude Sonnet 5](https://modelindex.ai/badge/anthropic/claude-sonnet-5)](https://modelindex.ai/models/anthropic/claude-sonnet-5)
Sources
anthropic ↗23 minutes ago
OFFICIAL PRICING
OpenRouter API23 minutes ago
AGGREGATOR
LiteLLM dataset23 minutes ago
AGGREGATOR
ModelIndex benchmarks15 minutes ago
MEASURED
✓ Verified against Anthropic’s own source.
Verified 23 minutes ago · list prices, not negotiated rates.