Claude Opus 5.5

Anthropicclaude-opusActive

For long-running agentic coding and knowledge work.

Released: 2026-09-22
Knowledge cutoff: 2026-06
Context window: 1,000,000 tokens
Max input: —
Max output: 128,000 tokens
Modalities: text, image → text
Reasoning: Yes
Tool calling: Yes

Prices by provider

Exact USD list prices. — means the price is unknown (not free). History is append-only: a change adds a new entry.

Amazon Bedrock · Global cross-Region inference

Model id: global.anthropic.claude-opus-5-5

Meter	Standard	Unit
Input	$4.00	per 1M tokens
Output	$20.00	per 1M tokens
Cache read	$0.20	per 1M tokens
Cache write (5m)	$5.00	per 1M tokens
Cache write (1h)	$8.00	per 1M tokens

Effective from: 2026-10-09
Source: Provider price list, fetched 2026-10-09 19:52:00 UTC, version 20261008235637
Source entry: Claude Opus 5.5 / On-demand Inference / *_global_standard
Verify at: https://aws.amazon.com/bedrock/pricing/
Notes: AWS price list for us-east-1, global usage types. Cache writes without a TTL suffix are the 5-minute writes.

No earlier prices recorded.

API example

aws bedrock-runtime converse \
  --region us-east-1 \
  --model-id global.anthropic.claude-opus-5-5 \
  --messages '[{"role": "user", "content": [{"text": "Hello"}]}]'

Amazon Bedrock · US cross-Region inference

Model id: us.anthropic.claude-opus-5-5

Meter	Standard	Unit
Input	$4.40	per 1M tokens
Output	$22.00	per 1M tokens
Cache read	$0.22	per 1M tokens
Cache write (5m)	$5.50	per 1M tokens
Cache write (1h)	$8.80	per 1M tokens

Effective from: 2026-10-09
Source: Provider price list, fetched 2026-10-09 19:52:00 UTC, version 20261008235637
Source entry: Claude Opus 5.5 / On-demand Inference / *_standard
Verify at: https://aws.amazon.com/bedrock/pricing/
Notes: AWS price list for us-east-1, regional usage types (10% above global).

No earlier prices recorded.

API example

aws bedrock-runtime converse \
  --region us-east-1 \
  --model-id us.anthropic.claude-opus-5-5 \
  --messages '[{"role": "user", "content": [{"text": "Hello"}]}]'

Anthropic

Model id: claude-opus-5-5

Meter	Standard	Batch	Unit
Input	$4.00	$2.00	per 1M tokens
Output	$20.00	$10.00	per 1M tokens
Cache read	$0.20	—	per 1M tokens
Cache write (5m)	$5.00	—	per 1M tokens
Cache write (1h)	$8.00	—	per 1M tokens
Search	$0.01	—	per search

Effective from: 2026-10-09
Source: Provider pricing page, fetched 2026-10-09 19:33:00 UTC
Notes: Model pricing and Batch processing tables; web search is $10 per 1,000 searches. The page lists batch rates for input and output tokens only.

No earlier prices recorded.

API example

curl https://api.anthropic.com/v1/messages \
  -H "x-api-key: $ANTHROPIC_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "content-type: application/json" \
  -d '{"model": "claude-opus-5-5", "max_tokens": 1024, "messages": [{"role": "user", "content": "Hello"}]}'

OpenRouter

Model id: anthropic/claude-opus-5.5

Meter	Standard	Batch	Unit
Input	$4.00	$2.00	per 1M tokens
Output	$20.00	$10.00	per 1M tokens
Cache read	$0.20	$0.10	per 1M tokens
Cache write (5m)	$5.00	$2.50	per 1M tokens
Cache write (1h)	$8.00	$4.00	per 1M tokens
Search	$0.01	$0.01	per search

Effective from: 2026-10-09
Source: OpenRouter API, fetched 2026-10-09 19:37:00 UTC
Source entry: anthropic/claude-opus-5.5
Notes: Batch rates are the separate anthropic/claude-opus-5.5:batch id.

No earlier prices recorded.

API example

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "anthropic/claude-opus-5.5", "messages": [{"role": "user", "content": "Hello"}]}'

Model ids

Provider	Id to send	Also accepted
Amazon Bedrock Global cross-Region inference	`global.anthropic.claude-opus-5-5`
Amazon Bedrock US cross-Region inference	`us.anthropic.claude-opus-5-5`
Anthropic	`claude-opus-5-5`
OpenRouter	`anthropic/claude-opus-5.5`

This model as JSON

curl -s https://models.omg.bitop.dev/api/v1/models/claude-opus-5-5.json

Open the JSON