Migrating from claude-opus-4-20250514 to claude-opus-4-1-20250805

What changes when you move from claude-opus-4-20250514 to claude-opus-4-1-20250805: input price 0%, output price 0%.

From: claude-opus-4-20250514
Status: Retired
Shutdown: Jun 15, 2026
Time left: —

To: claude-opus-4-1-20250805
Status: Retired
Shutdown: Aug 5, 2026
Time left: —

claude-opus-4-1-20250805 is itself retired. Its replacement is claude-opus-4-8.

Prices

USD per 1M tokens, standard tier

Type	claude-opus-4-20250514	claude-opus-4-1-20250805	Change
Input	$15.00first seen October 1, 2026 · source	$15.00first seen October 1, 2026 · source	0%
Cached input	$1.50first seen October 1, 2026 · source	$1.50first seen October 1, 2026 · source	0%
Output	$75.00first seen October 1, 2026 · source	$75.00first seen October 1, 2026 · source	0%

At 1M input and 250K output tokens a month: $33.75 on claude-opus-4-20250514, $33.75 on claude-opus-4-1-20250805 (0%).

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

Limits

Tokens

Neither company publishes a context window or output limit for these models.

Benchmarks

Same benchmark, source and setting on both sides

Benchmark	claude-opus-4-20250514	claude-opus-4-1-20250805	Change
Arena TextArena, thinking 16k. Ranges don't overlap. Other settings 1414 ±4 → 1448 ±3	1426 ±4	1450 ±3	+24
Arena Text: CodingArena, thinking 16k. Other settings 1464 ±7 → 1505 ±5	1498 ±8	1511 ±6	+13 within range
Arena SearchArena. Ranges don't overlap.	1152 ±6	1167 ±5	+15
GPQA DiamondEpoch AI, 16k. Other settings not run → 76.8% 27k 69.2% → 73.2%	76.3%	77.3%	+1.0 pts
OTIS Mock AIME 2024-2025Epoch AI, 27k. Other settings 60.0% → 64.4% 16k 42.2% → 40.0%	64.4%	68.9%	+4.5 pts
SWE-bench VerifiedEpoch AI.	70.7%	73.3%	+2.6 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

Neither company publishes feature facts for these models.

Aliases

All aliases

No aliases point at either model.

On cloud platforms

All platform dates

Model	Platform	Platform ID	Shutdown	Time left
claude-opus-4-1-20250805	Amazon Bedrock	anthropic.claude-opus-4-1-20250805-v1:0	Jan 8, 2027Legacy	85 days
claude-opus-4-1-20250805	Microsoft Foundry	claude-opus-4-1	Aug 5, 2026Retired on August 5, 2026

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-opus-4-20250514 to claude-opus-4-1-20250805.

Compared from AIWire's published data when this page loaded. Each fact links to the page it came from. Model pages: claude-opus-4-20250514, claude-opus-4-1-20250805.