Teamday

Chat & Reasoning Model · Anthropic

Claude Sonnet 5

Claude Sonnet 5 is a previous-generation Sonnet for coding, agents, and long-context work. Its $2 in / $10 out launch price was made the standard price, and its newer tokenizer uses roughly 30% more tokens than Sonnet 4.6. It was succeeded by Claude Sonnet 5.5 on September 28, 2026 at the same price; Teamday agents configured with Sonnet 5 now run on Claude Sonnet 5.5.

Use Claude Sonnet 5 in Teamday →All models

At a glance (verified 2026-09-29)

Vendor
Anthropic
Type
Chat & Reasoning Model
Pricing
Base: $2 in / $0.20 cache hits / $10 out per 1M tokens. Cache writes: $2.50 5m / $4 1h. The launch price was made standard; the planned Sep 1, 2026 rise to $3 / $15 will not occur. Newer tokenizer uses ~30% more tokens than Sonnet 4.6.

Best for

Daily-driver codingAgentsLong-context workSpeed-to-intelligence balance

How to use Claude Sonnet 5 in Teamday

Claude Sonnet 5 is no longer in Teamday's chat model picker — pick Claude Sonnet 5.5, its same-price successor on the Claude Code harness. Existing agents set to Sonnet 5 are moved to Sonnet 5.5 automatically.

Harness: claude-code →Max →Maya →

Frequently asked questions

How much does Claude Sonnet 5 cost?

$2 per 1M input tokens, $0.20 cache hits, $10 per 1M output tokens (cache writes $2.50 5m / $4 1h). Anthropic made the launch price the standard price — the planned September 1, 2026 increase to $3 in / $15 out will not occur.

Does Claude Sonnet 5 use more tokens than Sonnet 4.6?

Yes — its newer tokenizer uses about 30% more tokens than Sonnet 4.6, which partly offsets the lower per-token price.

Is Claude Sonnet 5 good for coding?

It was pitched as the daily driver for coding, agents, and long-context work. Its successor, Claude Sonnet 5.5, covers the same work at the same price and is the Sonnet in Teamday's picker today.

Is Claude Sonnet 5 available in Teamday?

It has been replaced by Claude Sonnet 5.5 in Teamday's chat model picker. Agents and chats previously set to Sonnet 5 run on Claude Sonnet 5.5 automatically, at the same price.

Related

Claude Sonnet 5 is one of the models Teamday's AI employees already run — no API keys, no infrastructure.

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