Migrating from claude-sonnet-5 to claude-sonnet-5-5

What changes when you move from claude-sonnet-5 to claude-sonnet-5-5: input price 0%, output price 0%.

From: claude-sonnet-5
Status: Active
Shutdown: not before Jun 30, 2027
Time left: —

To: claude-sonnet-5-5
Status: Active
Shutdown: not before Sep 28, 2027
Time left: —

Prices

USD per 1M tokens, standard tier

Type	claude-sonnet-5	claude-sonnet-5-5	Change
Input	$2.00first seen October 1, 2026 · source	$2.00first seen October 1, 2026 · source	0%
Cached input	$0.20first seen October 1, 2026 · source	$0.10first seen October 8, 2026 · source	−50%
Output	$10.00first seen October 1, 2026 · source	$10.00first seen October 1, 2026 · source	0%

At 1M input and 250K output tokens a month: $4.50 on claude-sonnet-5, $4.50 on claude-sonnet-5-5 (0%).

Other tiers, prompt-size bands and modalities are on each model's page.

Limits

Tokens

Limit	claude-sonnet-5	claude-sonnet-5-5	Change
Context window	1,000,000 tokensin place when tracking began (October 6, 2026) · source	1,000,000 tokensin place when tracking began (October 6, 2026) · source	0%
Max output tokens	128,000 tokensin place when tracking began (October 6, 2026) · source	128,000 tokensin place when tracking began (October 6, 2026) · source	0%

Benchmarks

Same benchmark and source on both sides; settings named where they differ

Benchmark	claude-sonnet-5	claude-sonnet-5-5	Change
Arena TextArena, xhigh effort (vs high effort). Ranges don't overlap.	1461 ±4	1475 ±8	+14
Arena Text: CodingArena, xhigh effort (vs high effort).	1520 ±6	1527 ±15	+7 within range
Arena WebDevArena, xhigh effort (vs high effort). Ranges don't overlap. Other settings 1540 ±6 → 1713 ±10 high effort	1540 ±6	1774 ±14	+234
Arena VisionArena, xhigh effort (vs high effort).	1263 ±7	1266 ±14	+3 within range
Arena AgentArena, max effort (vs high effort). Ranges don't overlap.	0.047 ±0.017	0.125 ±0.031	+0.078
FrontierMath Tier 4Epoch AI, max effort.	29.3%	80.5%	+51.2 pts
FrontierMath Tiers 1-3Epoch AI, max effort.	65.6%	88.8%	+23.2 pts
GPQA DiamondEpoch AI, max effort.	80.3%	95.6%	+15.3 pts
OTIS Mock AIME 2024-2025Epoch AI, max effort.	80.0%	100.0%	+20.0 pts
SimpleQA VerifiedEpoch AI, max effort.	33.7%	46.5%	+12.8 pts

A score from one source is never compared with another source's, and company-reported scores are compared only within the same company; settings named where they differ. Data: Arena (arena.ai), CC BY 4.0; Epoch AI, Capabilities & benchmarking (epoch.ai/benchmarks), CC BY.

Features and parameters

Compare models

Same on both

Both reject temperature.claude-sonnet-5: in place when tracking began (October 6, 2026) · source · claude-sonnet-5-5: in place when tracking began (October 6, 2026) · source
Both reject top_p.claude-sonnet-5: in place when tracking began (October 6, 2026) · source · claude-sonnet-5-5: in place when tracking began (October 6, 2026) · source
Prompt caching: supported on both.claude-sonnet-5: in place when tracking began (October 6, 2026) · source · claude-sonnet-5-5: in place when tracking began (October 6, 2026) · source
Batch API: supported on both.claude-sonnet-5: in place when tracking began (October 6, 2026) · source · claude-sonnet-5-5: in place when tracking began (October 6, 2026) · source
Image input: supported on both.claude-sonnet-5: in place when tracking began (October 6, 2026) · source · claude-sonnet-5-5: in place when tracking began (October 6, 2026) · source
Reasoning / thinking: supported (thinking: adaptive; default effort: high) on both.claude-sonnet-5: in place when tracking began (October 6, 2026) · source · claude-sonnet-5-5: in place when tracking began (October 6, 2026) · source

Not published for claude-sonnet-5: Structured outputs, Function calling, PDF input, Fine-tuning, Built-in web search, logprobs.

Not published for claude-sonnet-5-5: Structured outputs, Function calling, PDF input, Fine-tuning, Built-in web search, logprobs.

Aliases

All aliases

No aliases point at either model.

On cloud platforms

All platform dates

Model	Platform	Platform ID	Shutdown	Time left
claude-sonnet-5	Amazon Bedrock	anthropic.claude-sonnet-5	not before Jun 30, 2027Active
claude-sonnet-5	Microsoft Foundryversion 1	claude-sonnet-5	Jun 30, 2027Active	258 days
claude-sonnet-5	Microsoft Foundryversion 2	claude-sonnet-5	Jun 30, 2027Active	258 days
claude-sonnet-5-5	Amazon Bedrock	anthropic.claude-sonnet-5-5	not before Sep 28, 2027Active

Read daily from each platform's own pages. The status above uses each company's own date. Time left counts to 00:00 UTC on the shutdown date, which is the evening before in ET.

Checklist

Change the model string from claude-sonnet-5 to claude-sonnet-5-5.

Compared from AIWire's published data when this page loaded. Each fact links to the page it came from. Model pages: claude-sonnet-5, claude-sonnet-5-5.