Claude Opus 5.5

Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. It is particularly strong at multi-step changes in large codebases, code review and bug finding, financial and scientific analysis, and reading dense charts, diagrams, and screenshots, and it is more careful than its predecessor about only stating figures and citing sources it can back up.

The model completes comparable tasks in fewer steps and with fewer tokens than Opus 5, and reports on its work in plainer language, with clear updates on what it did, what it found, and what it needs from the user. Thinking is always adaptive, so effort is the main lever for trading off depth, latency, and cost, and lower effort settings remain effective for latency-sensitive workloads.

anthropic/claude-opus-5-5

Organization: Anthropic
Family: claude-opus
Providers: 35
Context: 1,000,000
Output limit: 128,000
Knowledge: 2026-06
Release: 2026-09-22
Updated: 2026-09-22
Weights: Closed
Input: text, image, pdf
Output: text
Capabilities: Tools, Reasoning

Providers

Compare every cataloged offer for this model, including its provider, route, token limits, price, and capabilities.

56 offers · USD per million tokens

Provider	Model ID	Context	Output	Input / output · 1M	Reasoning	Tools	Structured	Details
302.AI	claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
AIHubMix	claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
AI/ML API	anthropic/claude-opus-5.5	1,000,000	128,000	$5.20 / $26.00	Yes	Yes	—	View
Aixy	anthropic/claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Amazon Bedrock	au.anthropic.claude-opus-5-5	1,000,000	128,000	$4.40 / $22.00	Yes	Yes	—	View
Amazon Bedrock	anthropic.claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
Amazon Bedrock	us.anthropic.claude-opus-5-5	1,000,000	128,000	$4.40 / $22.00	Yes	Yes	—	View
Amazon Bedrock	eu.anthropic.claude-opus-5-5	1,000,000	128,000	$4.40 / $22.00	Yes	Yes	—	View
Amazon Bedrock	global.anthropic.claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
Amazon Bedrock	jp.anthropic.claude-opus-5-5	1,000,000	128,000	$4.40 / $22.00	Yes	Yes	—	View
Anthropic	claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Azure	claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Azure Cognitive Services	claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Boundless	claude-opus-5.5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
Cloudflare AI Gateway	anthropic/claude-opus-5.5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
CommandCode	claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
Cortecs	claude-opus-5.5	1,000,000	128,000	$4.399 / $21.998	Yes	Yes	Yes	View
CrossModel	anthropic/claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
DevPass (LLM Gateway)	claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
DigitalOcean	anthropic-claude-opus-5.5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
Eden AI	anthropic/claude-opus-latest	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Eden AI	anthropic/claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
GitHub Copilot	claude-opus-5.5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
GitLab Duo	duo-chat-opus-5-5	1,000,000	128,000	$0.00 / $0.00	Yes	Yes	—	View
Kilo Gateway	anthropic/claude-opus-5.5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
LLM Gateway	anthropic/claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
LLM Gateway	azure-anthropic/claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
LLM Gateway	aws-bedrock/claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	No	View
Merge Gateway	anthropic/claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
NanoGPT	anthropic/claude-opus-5.5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
NEAR AI Cloud	anthropic/claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
Neon	claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	No	View
Ofox	anthropic/claude-opus-5.5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
OpenCode	claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
Amazon Bedrockvia OpenRouter	anthropic/claude-opus-5.5 unknown	1,000,000	128,000	$4.40 / $22.00	Yes	Yes	No	View
Amazon Bedrockvia OpenRouter	anthropic/claude-opus-5.5 unknown	1,000,000	128,000	$4.40 / $22.00	Yes	Yes	No	View
Amazon Bedrockvia OpenRouter	anthropic/claude-opus-5.5 unknown	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	No	View
Anthropicvia OpenRouter	anthropic/claude-opus-5.5 unknown	1,000,000	128,000	$8.00 / $40.00	Yes	Yes	Yes	View
Anthropicvia OpenRouter	anthropic/claude-opus-5.5 unknown	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Azurevia OpenRouter	anthropic/claude-opus-5.5 unknown	1,000,000	128,000	$4.40 / $22.00	Yes	Yes	Yes	View
Azurevia OpenRouter	anthropic/claude-opus-5.5 unknown	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Claude Platform on AWSvia OpenRouter	anthropic/claude-opus-5.5 unknown	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Googlevia OpenRouter	anthropic/claude-opus-5.5 unknown	1,000,000	128,000	$4.40 / $22.00	Yes	Yes	Yes	View
Googlevia OpenRouter	anthropic/claude-opus-5.5 unknown	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Googlevia OpenRouter	anthropic/claude-opus-5.5 unknown	1,000,000	128,000	$4.40 / $22.00	Yes	Yes	Yes	View
Prime Inference	anthropic/claude-opus-5.5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Requesty	claude-opus-5-5@eu	1,000,000	128,000	$4.40 / $22.00	Yes	Yes	Yes	View
Requesty	claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Venice AI	claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Venice AI	claude-opus-5-5-fast	1,000,000	128,000	$8.00 / $40.00	Yes	Yes	Yes	View
Vercel AI Gateway	anthropic/claude-opus-5.5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View
Vercel AI Gateway	anthropic/claude-opus-5.5-fast	1,000,000	128,000	$8.00 / $40.00	Yes	Yes	—	View
Vertex	claude-opus-5-5@default	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Vertex (Anthropic)	claude-opus-5-5@default	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
Vivgrid	claude-opus-5-5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	Yes	View
ZenMux	anthropic/claude-opus-5.5	1,000,000	128,000	$4.00 / $20.00	Yes	Yes	—	View

Prices and limits apply to each offer. A dash means the value is not provided. OpenRouter offers show the hosting provider and routing channel separately.

Pricing

Compare token rates and cache charges across available routes and hosting configurations.

USD per million tokens

Input from$0.00Per 1M input tokens

Output from$0.00Per 1M output tokens

Available offers56Across 35 providers

Lowest listed input and output prices across the offers above; they may belong to different providers. These are base rates, before conditional pricing, discounts or additional fees.

Endpoint price comparisonLatest observed snapshot · 10 lowest-priced configurations

InputOutput

Amazon Bedrockamazon-bedrock

$4.00$20.00

Anthropicanthropic

$4.00$20.00

Azureazure/global

$4.00$20.00

Claude Platform on AWSclaude-on-aws

$4.00$20.00

Googlegoogle-vertex/global

$4.00$20.00

Amazon Bedrockamazon-bedrock/us-east-1

$4.40$22.00

Amazon Bedrockamazon-bedrock/eu-west-1

$4.40$22.00

Azureazure/us

$4.40$22.00

Googlegoogle-vertex/us

$4.40$22.00

Googlegoogle-vertex/europe

$4.40$22.00

anthropic/claude-opus-5.5Observed Oct 10, 2026, 11:31 AM UTC

Input: $4.00
Output: $20.00
Cache read: $0.20
Cache write: $5.00
Cache write · 1 hour: $8.00

Additional fees and pricing conditions

web search: $0.01 / search

Hosting prices through OpenRouter All endpoints and cache rates

Endpoint	Input / 1M	Output / 1M	Cache read / 1M	Cache write / 1M
Amazon Bedrockamazon-bedrock/us-east-1	$4.40	$22.00	$0.22	$5.50
Amazon Bedrockamazon-bedrock/eu-west-1	$4.40	$22.00	$0.22	$5.50
Amazon Bedrockamazon-bedrock	$4.00	$20.00	$0.20	$5.00
Anthropicanthropic/fast	$8.00	$40.00	$0.40	$10.00
Anthropicanthropic	$4.00	$20.00	$0.20	$5.00
Azureazure/us	$4.40	$22.00	$0.22	$5.50
Azureazure/global	$4.00	$20.00	$0.20	$5.00
Claude Platform on AWSclaude-on-aws	$4.00	$20.00	$0.20	$5.00
Googlegoogle-vertex/us	$4.40	$22.00	$0.22	$5.50
Googlegoogle-vertex/global	$4.00	$20.00	$0.20	$5.00
Googlegoogle-vertex/europe	$4.40	$22.00	$0.22	$5.50

Each row is a hosting configuration. Open an offer in Providers for its full pricing conditions and additional fees. Endpoint observations may differ from the routing catalog's base price.

Performance

Review reported latency and output-throughput percentiles from the latest observed rolling window.

Latest 30-minute observation

Time to first token · milliseconds

Latency distributionRolling 30-minute snapshot · 6 endpoints

P50P75P90P99

Amazon Bedrockamazon-bedrock/us-east-1

10,902–65,784.97 ms

Amazon Bedrockamazon-bedrock/eu-west-1

2,954.5–10,133.84 ms

Amazon Bedrockamazon-bedrock

14,707–77,108.67 ms

Anthropicanthropic/fast

2,059–16,534.34 ms

Anthropicanthropic

3,321.5–17,029.19 ms

Azureazure/us

1,783–4,610.28 ms

All latency percentiles 11 endpoints

Endpoint	P50	P75	P90	P99
Amazon Bedrockamazon-bedrock/us-east-1	10,902 ms	19,828.5 ms	37,030.4 ms	65,784.97 ms
Amazon Bedrockamazon-bedrock/eu-west-1	2,954.5 ms	4,036.75 ms	5,005.7 ms	10,133.84 ms
Amazon Bedrockamazon-bedrock	14,707 ms	25,484.5 ms	39,684.4 ms	77,108.67 ms
Anthropicanthropic/fast	2,059 ms	2,995 ms	3,748.6 ms	16,534.34 ms
Anthropicanthropic	3,321.5 ms	4,579.5 ms	6,300.7 ms	17,029.19 ms
Azureazure/us	1,783 ms	2,519 ms	3,109.8 ms	4,610.28 ms
Azureazure/global	2,094 ms	2,825 ms	3,364.8 ms	4,812.6 ms
Claude Platform on AWSclaude-on-aws	4,486.5 ms	5,302 ms	6,571.8 ms	15,594.16 ms
Googlegoogle-vertex/us	1,744.5 ms	2,483.5 ms	3,095.8 ms	4,683.53 ms
Googlegoogle-vertex/global	3,276 ms	5,312.25 ms	13,695.6 ms	27,593.04 ms
Googlegoogle-vertex/europe	1,852.5 ms	2,567.25 ms	3,184 ms	4,352.75 ms

Output throughput · tokens per second

Throughput distributionRolling 30-minute snapshot · 6 endpoints

P50P75P90P99

Amazon Bedrockamazon-bedrock/us-east-1

18–81.72 t/s

Amazon Bedrockamazon-bedrock/eu-west-1

58–105.89 t/s

Amazon Bedrockamazon-bedrock

27–89 t/s

Anthropicanthropic/fast

133–355.48 t/s

Anthropicanthropic

73–139 t/s

Azureazure/us

85–138.48 t/s

All throughput percentiles 11 endpoints

Endpoint	P50	P75	P90	P99
Amazon Bedrockamazon-bedrock/us-east-1	18 t/s	34 t/s	51 t/s	81.72 t/s
Amazon Bedrockamazon-bedrock/eu-west-1	58 t/s	71 t/s	82 t/s	105.89 t/s
Amazon Bedrockamazon-bedrock	27 t/s	46 t/s	64 t/s	89 t/s
Anthropicanthropic/fast	133 t/s	219.5 t/s	291 t/s	355.48 t/s
Anthropicanthropic	73 t/s	92 t/s	108 t/s	139 t/s
Azureazure/us	85 t/s	99 t/s	114 t/s	138.48 t/s
Azureazure/global	88 t/s	101 t/s	112 t/s	138 t/s
Claude Platform on AWSclaude-on-aws	71 t/s	90 t/s	103 t/s	126 t/s
Googlegoogle-vertex/us	91 t/s	103 t/s	115 t/s	135.42 t/s
Googlegoogle-vertex/global	84 t/s	101 t/s	113 t/s	137 t/s
Googlegoogle-vertex/europe	88 t/s	100 t/s	110 t/s	130.74 t/s

Percentiles describe the observed request distribution. These are snapshots of a rolling window, not a historical time series.

Uptime

Compare successful request rates across the latest 5-minute, 30-minute, and 24-hour observations.

Successful requests by window

Availability by endpointCurrent overlapping windows · 11 endpoints

Endpoint5 minutes30 minutes24 hours

Amazon Bedrockamazon-bedrock/us-east-1Observed Oct 10, 2026, 11:31 AM UTC

100%

75%

Amazon Bedrockamazon-bedrock/eu-west-1Observed Oct 10, 2026, 11:31 AM UTC

—

100%

Amazon Bedrockamazon-bedrockObserved Oct 10, 2026, 11:31 AM UTC

100%

96.67%

84.17%

Anthropicanthropic/fastObserved Oct 10, 2026, 11:31 AM UTC

100%

AnthropicanthropicObserved Oct 10, 2026, 11:31 AM UTC

100%

Azureazure/usObserved Oct 10, 2026, 11:31 AM UTC

—

100%

Azureazure/globalObserved Oct 10, 2026, 11:31 AM UTC

100%

Claude Platform on AWSclaude-on-awsObserved Oct 10, 2026, 11:31 AM UTC

100%

Googlegoogle-vertex/usObserved Oct 10, 2026, 11:31 AM UTC

100%

Googlegoogle-vertex/globalObserved Oct 10, 2026, 11:31 AM UTC

100%

Googlegoogle-vertex/europeObserved Oct 10, 2026, 11:31 AM UTC

100%

Reported by OpenRouter at the time of collection; rate-limited requests are excluded. A dash means no measurement was reported. This is not a live availability check.

Benchmarks

Review attributed evaluation results on each source's original scale.

External evaluations

anthropic/claude-opus-5.5Observed Oct 10, 2026, 11:31 AM UTC

Benchmark profileArtificial Analysis · shared source scale from 0 to 60

Intelligence

57.6

Design Arena	Category	Elo	Win rate	Rank
agents	mobileapps	1,328	64.3%	2
models	3d	1,483	72%	1
models	codecategories	1,406	65.3%	1
models	dataviz	1,403	64.7%	1
models	gamedev	1,465	72.8%	1
models	svg	1,331	50.3%	1
models	uicomponent	1,396	65.4%	1
models	website	1,339	57.6%	3

Sources: Artificial Analysis and Design Arena, via OpenRouter. Scores retain their original scales and are not OpenAI Suite ratings.

Detailed evaluations

Evaluation scoresAccuracy or item F1 · higher is better

gpqa diamondAnthropic: Claude Opus 5.5

90.446%

tau bench verified airlineAnthropic: Claude Opus 5.5

75.5%

Evaluation	Configuration	Source	Results	Details
gpqa diamond	Anthropic: Claude Opus 5.5anthropic/claude-opus-5.5-20260921	OpenRouter	90.446%	Details
Composite indices	Claude Opus 5.5 (Max, Default Fallback)anthropic/claude-opus-5.5-20260921	Artificial Analysis	Intelligence 57.6 · Coding — · Agentic —	Details
models · uicomponent	Claude Opus 5.5anthropic/claude-opus-5.5-20260921	Design Arena	1,380 Elo	Details
models · website	Claude Opus 5.5anthropic/claude-opus-5.5-20260921	Design Arena	1,336 Elo	Details
models · svg	Claude Opus 5.5anthropic/claude-opus-5.5-20260921	Design Arena	1,332 Elo	Details
models · gamedev	Claude Opus 5.5anthropic/claude-opus-5.5-20260921	Design Arena	1,463 Elo	Details
tau bench verified airline	Anthropic: Claude Opus 5.5anthropic/claude-opus-5.5-20260921	OpenRouter	75.5%	Details
models · codecategories	Claude Opus 5.5anthropic/claude-opus-5.5-20260921	Design Arena	1,391 Elo	Details
models · 3d	Claude Opus 5.5anthropic/claude-opus-5.5-20260921	Design Arena	1,478 Elo	Details
models · dataviz	Claude Opus 5.5anthropic/claude-opus-5.5-20260921	Design Arena	1,399 Elo	Details

Sources: Artificial Analysis, Design Arena and OpenRouter. Evaluation configurations and scales differ; results are not interchangeable. Updated Oct 17, 2026.

Apps & session costs

Compare observed median session costs for applications using this model, grouped by conversation length.

30-day sample · through Oct 11, 2026

Application	Model route	Turns	Median cost / session	Details
Claude Code	anthropic/claude-opus-5.5-20260921	1 turn	$0.134167	Details
Claude Code	anthropic/claude-opus-5.5-20260921	10–49 turns	$1.383299	Details
Hermes Agent	anthropic/claude-opus-5.5-20260921	1 turn	$0.020732	Details
Hermes Agent	anthropic/claude-opus-5.5-20260921	2–9 turns	$0.201541	Details
Hermes Agent	anthropic/claude-opus-5.5-20260921	50+ turns	$8.689499	Details
Claude Code	anthropic/claude-opus-5.5-20260921	2–9 turns	$0.304359	Details
Hermes Agent	anthropic/claude-opus-5.5-20260921	10–49 turns	$1.321082	Details
Claude Code	anthropic/claude-opus-5.5-20260921	50+ turns	$8.943665	Details
Codex	anthropic/claude-opus-5.5-20260921	1 turn	$0.056924	Details
Kilo Code	anthropic/claude-opus-5.5-20260921	50+ turns	$7.945149	Details
Kilo Code	anthropic/claude-opus-5.5-20260921	10–49 turns	$1.612654	Details
Codex	anthropic/claude-opus-5.5-20260921	2–9 turns	$0.558664	Details
Kilo Code	anthropic/claude-opus-5.5-20260921	2–9 turns	$0.385898	Details

Source: OpenRouter, as of Oct 12, 2026. Published under CC BY 4.0. These are observed costs per session, not token prices or a forecast for your workload. Apps are compared separately.

Activity

Daily prompt and completion tokens reported for this model's routes in OpenRouter's top 50. Missing days have no published value.

Last 90 complete UTC days

Daily token usage13,096,617,834,852 reported tokens · 24 days with observations

1T0

2026-09-23
194,213,435,310 tokens

2026-09-24
224,960,655,519 tokens

2026-09-25
242,184,315,698 tokens

2026-09-26
187,657,725,049 tokens

2026-09-27
204,661,336,620 tokens

2026-09-28
321,735,526,822 tokens

2026-09-29
312,346,533,110 tokens

2026-09-30
439,601,687,630 tokens

2026-10-01
358,562,668,902 tokens

2026-10-02
344,560,596,736 tokens

2026-10-03
332,532,867,669 tokens

2026-10-04
353,658,217,039 tokens

2026-10-05
457,654,386,250 tokens

2026-10-06
640,063,496,672 tokens

2026-10-07
883,020,526,231 tokens

2026-10-08
818,315,141,426 tokens

2026-10-09
830,267,538,712 tokens

2026-10-10
699,435,464,442 tokens

2026-10-11
689,978,363,698 tokens

2026-10-12
788,542,034,297 tokens

2026-10-13
931,821,267,503 tokens

2026-10-14
887,438,539,653 tokens

2026-10-15
1,020,025,645,998 tokens

2026-10-16
933,379,863,866 tokens

Jul 19, 2026Oct 16, 2026

Daily observations · 24 days

Date (UTC)	Reported tokens	Reported routes
Oct 16, 2026	933,379,863,866	1
Oct 15, 2026	1,020,025,645,998	1
Oct 14, 2026	887,438,539,653	1
Oct 13, 2026	931,821,267,503	1
Oct 12, 2026	788,542,034,297	1
Oct 11, 2026	689,978,363,698	1
Oct 10, 2026	699,435,464,442	1
Oct 9, 2026	830,267,538,712	1
Oct 8, 2026	818,315,141,426	1
Oct 7, 2026	883,020,526,231	1
Oct 6, 2026	640,063,496,672	1
Oct 5, 2026	457,654,386,250	1
Oct 4, 2026	353,658,217,039	1
Oct 3, 2026	332,532,867,669	1
Oct 2, 2026	344,560,596,736	1
Oct 1, 2026	358,562,668,902	1
Sep 30, 2026	439,601,687,630	1
Sep 29, 2026	312,346,533,110	1
Sep 28, 2026	321,735,526,822	1
Sep 27, 2026	204,661,336,620	1
Sep 26, 2026	187,657,725,049	1
Sep 25, 2026	242,184,315,698	1
Sep 24, 2026	224,960,655,519	1
Sep 23, 2026	194,213,435,310	1

Source: OpenRouter (openrouter.ai/rankings), as of Oct 17, 2026. CC BY 4.0. Totals include only individually published routes. Tokenizers differ by provider; the aggregated “other” category is never assigned to a model.

Technical details & API

Explore specifications, supported parameters, reasoning controls, and API identifiers for each OpenRouter route.

Current route specifications

anthropic/claude-opus-5.5Observed Oct 10, 2026, 11:31 AM UTC

Context: 1,000,000
Maximum output: 128,000
Tokenizer: Claude
Input: text, image, file
Output: text
Moderation: Yes
Added to OpenRouter: 2026-09-22

Base URLhttps://openrouter.ai/api/v1

Model IDanthropic/claude-opus-5.5

Version IDanthropic/claude-opus-5.5-20260921

Reasoning

Required: Yes
Enabled by default: Not reported
Default effort: high
Supported efforts: max, xhigh, high, medium, low

Supported parameters

include_reasoning
max_completion_tokens
max_tokens
reasoning
reasoning_effort
response_format
stop
structured_outputs
tool_choice
tools
verbosity

Frequently asked questions

Answers based on the model metadata and serving offers currently in the catalog.

How much does Claude Opus 5.5 cost?

Listed rates start at $0.00 per million input tokens and $0.00 per million output tokens. Prices vary by provider and configuration; see Pricing for details.

Which providers offer Claude Opus 5.5?

There are 56 cataloged offers across 35 providers. Compare model IDs, prices and limits in Providers.

What is the context window?

The cataloged model context is 1,000,000 tokens. Each serving endpoint may apply a different limit.

Does it support tools and structured output?

Tool calling: Yes. Structured output: Not reported. Support can vary by endpoint.

Catalog history · 1 recorded revision

Metadata observations since this model was first cataloged. These are not model release versions.

Sep 23, 2026 · 4317c0a98435