Claude Sonnet 5
Last verified September 7, 2026 · Anthropic pricing ↗$2.00/1M input · $10.00/1M output · 1.0M context · Anthropic
Claude Sonnet 5 costs $2.00 per 1M input tokens and $10.00 per 1M output tokens from Anthropic, with a 1.0M-token context window. A typical chat reply (1,500 tokens in, 400 out) costs $0.0070, or $70.00 per 10,000 requests. On that workload it is cheaper than 43 of the 173 other buyable models tracked here.
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What Claude Sonnet 5 Costs Per Request
At $2.00 per 1M input and $10.00 per 1M output tokens, before caching or batch discounts.
| Workload | Input / output tokens | Per request | Per 10,000 requests |
|---|---|---|---|
| Chat reply | 1,500 / 400 | $0.0070 | $70.00 |
| RAG answer over retrieved docs | 8,000 / 600 | $0.022 | $220.00 |
| Coding-agent step | 30,000 / 2,000 | $0.080 | $800.00 |
Claude Sonnet 5 vs Similarly Priced Models
Nearest buyable models by price, with the RAG answer above (8,000 in / 600 out) priced on each.
| Model | Input /1M | Output /1M | Context | RAG answer |
|---|---|---|---|---|
| Claude Sonnet 5 Anthropic | $2.00 | $10.00 | 1.0M | $0.022 |
| Claude Sonnet 5.5 Anthropic | $2.00 | $10.00 | 1.0M | $0.022 |
| GPT-6.1 Sol OpenAI | $2.00 | $10.00 | 1.1M | $0.022 |
| Gemini 4 Argon Google | $2.00 | $10.00 | 1.0M | $0.022 |
Alternatives to Claude Sonnet 5
Pricing Details
AnthropicAnthropic mid-tier flagship, launched June 30. $2/$10 is now the standard price: Anthropic's pricing docs state that the introductory rate announced through Aug 31, 2026 is now standard and the scheduled Sept 1 increase to $3/$15 will not occur. The former schedule has been removed from this entry so the calculator does not raise the price on Sept 1. Cache hit: $0.20/MTok. Cache write (5min/1hr): $2.50/$4. Batch: $1/$5. Full 1M context at standard pricing, no long-context surcharge. Max output 128K (300K on Batch beta). New tokenizer (shared with Opus 4.7+, Fable 5, Mythos 5): ~30% more tokens for the same text vs Sonnet 4.6 (1.0-1.35x by content). GDPval-AA v2 Elo 1618 (statistically tied with Opus 4.8's 1615), SWE-bench Verified 85.2, SWE-bench Pro 63.2, Terminal-Bench 2.1 80.4. API ID: claude-sonnet-5.
Input / 1M tokens
$2
Output / 1M tokens
$10
Context Window
1.0M
Max Output
128K
Price History
No price change recorded since 2026-07-24, when this site started tracking this model; it launched on 2026-06-30.
Frequently Asked Questions
Common questions about Claude Sonnet 5 pricing and usage
How much does Claude Sonnet 5 cost?
Claude Sonnet 5 costs $2 per 1 million input tokens and $10 per 1 million output tokens. This pricing is set by Anthropic.
What tokenizer does Claude Sonnet 5 use?
Claude Sonnet 5 uses the cl100k_base tokenizer. This tokenizer has a vocabulary of ~100,000 tokens and is widely used across many models.
What is Claude Sonnet 5's context window?
Claude Sonnet 5 supports a context window of 1.0M tokens (1,000,000 tokens). The maximum output length is 128K tokens.
How does Claude Sonnet 5 compare to other models?
On an 8,000-token-in, 600-token-out RAG answer, Claude Sonnet 5 costs $0.022 per request. The nearest-priced alternatives cost: Claude Sonnet 5.5 (Anthropic) $0.022, GPT-6.1 Sol (OpenAI) $0.022, Gemini 4 Argon (Google) $0.022. The table above lists their full rates and context windows.
How do I count tokens for Claude Sonnet 5?
Use the token counter at the top of this page or visit the homepage calculator. Paste your text and it will show the exact token count and cost for Claude Sonnet 5 using the cl100k_base tokenizer.
Read More About Claude Sonnet 5
Claude Sonnet 5.5 kept Sonnet 5's $2 and $10. Of its five effort settings, one is ever the cheapest way to its score, and it is the one the API picks when you leave effort unset.
September 29, 2026 · 9 min read
Anthropic cancelled the Claude Sonnet 5 price increase. $2 and $10 are the standard rates now, and September 1 passes without a change.
July 29, 2026 · 10 min read
Claude Sonnet 5 lands level with Opus 4.8 on an independent benchmark and asks 60% less for it. Two footnotes decide whether the bargain survives September.
July 1, 2026 · 8 min read