How much do Claude Opus 5.5 or Nemotron 3.5 Lightning cost per month?

For an example workload of 20 million input tokens and 5 million output tokens per month: Claude Opus 5.5: $180. Nemotron 3.5 Lightning: $1.68. These are token-only estimates using the displayed rates, without caching discounts, additional tool charges or taxes. Actual bills depend on usage and endpoint pricing.

Which has a larger context window: Claude Opus 5.5 or Nemotron 3.5 Lightning?

Claude Opus 5.5: 1M tokens of context; maximum output 128K tokens. Nemotron 3.5 Lightning: 262K tokens of context; maximum output 33K tokens. Context capacity and maximum output are separate limits. A larger context window allows more material in a request but does not guarantee more accurate answers.

Which is better for coding: Claude Opus 5.5 or Nemotron 3.5 Lightning?

Claude Opus 5.5: Artificial Analysis SciCode 66.9%. Nemotron 3.5 Lightning: Artificial Analysis SciCode 32.1%. Compare coding results within the same evaluation, then test representative tasks from your own codebase. A missing score is not a zero, and a single benchmark does not establish the best model for every programming task.

How do Arena Elo, DesignArena, Intelligence Index and MMLU-Pro differ?

These evaluations measure different tasks and use different scales. Arena Elo and DesignArena ratings must remain separate, as must Artificial Analysis Intelligence Index and MMLU-Pro. Compare models within the same evaluation rather than combining scores. Missing results are marked Not listed, not treated as measured zeroes.

Which responds faster: Claude Opus 5.5 or Nemotron 3.5 Lightning?

Claude Opus 5.5: Artificial Analysis output speed 91 tokens/s; time to first token 755.54 seconds. Nemotron 3.5 Lightning: Artificial Analysis output speed 301 tokens/s; time to first token 0.56 seconds. Output speed measures generation throughput, while time to first token measures the initial wait. Real-world latency also depends on the API provider, request size and load; missing measurements cannot establish a speed winner.

Do Claude Opus 5.5 or Nemotron 3.5 Lightning support images, audio or video?

Claude Opus 5.5: listed input formats: text, image, file; output formats: text. Nemotron 3.5 Lightning: listed input formats: text; output formats: text. Input and output support are different capabilities: accepting an image does not mean a model generates images. Confirm formats and file limits for the endpoint you plan to use.

Can prompt caching reduce the cost of Claude Opus 5.5 or Nemotron 3.5 Lightning?

Claude Opus 5.5: cached input price $0.20 per million tokens. Nemotron 3.5 Lightning: cached input price $0.02 per million tokens. Caching may reduce charges for eligible repeated input when supported by the endpoint. A listed cached rate does not guarantee every request qualifies; cache duration, minimum token counts and any write charges depend on the provider.

Are Claude Opus 5.5 or Nemotron 3.5 Lightning available through an API?

Claude Opus 5.5: catalog status active; API identifier claude-opus-5.5; listed API hosts not listed. Nemotron 3.5 Lightning: catalog status active; API identifier nemotron-3.5-lightning; listed API hosts not listed. Catalog status is not a live availability check. Before integrating, verify the provider's documentation, endpoint access, rate limits, regional availability and data-handling terms.

Models, measured side by side

Claude Opus 5.5 vs Nemotron 3.5 Lightning

Q: Do Claude Opus 5.5 or Nemotron 3.5 Lightning support tool calling and structured outputs?

Claude Opus 5.5: listed features: Function calling, Structured outputs, JSON mode, Reasoning, Prompt caching. Nemotron 3.5 Lightning: listed features: Function calling, Structured outputs, JSON mode, Reasoning, Log probabilities, Deterministic seed, Prompt caching. Only recorded capabilities are shown; an unlisted feature is not proof that it is unsupported. Availability can vary by API provider, so confirm tool calling and JSON schema support for your chosen endpoint.

Compare Claude Opus 5.5, Nemotron 3.5 Lightning by token pricing, context length, benchmark results, speed and tool support.

Highlight best

Monthly workload

Input· million tokensOutput· million tokens

Monthly cost breakdown

InputOutput

Claude Opus 5.5

$180 / mo

Nemotron 3.5 Lightning

$1.68 / mo

Performance comparison

Claude Opus 5.5

57.6

Nemotron 3.5 Lightning

12.9

Overview

Overview	Claude Opus 5.5	Nemotron 3.5 Lightning
Provider	Anthropic	NVIDIA
Released	2026-09-22	2026-08-11
Status	Active	Active
Input formats	textimagefile	text
Output formats	text	text

Provider

Claude Opus 5.5: Anthropic
Nemotron 3.5 Lightning: NVIDIA

Released

Claude Opus 5.5: 2026-09-22
Nemotron 3.5 Lightning: 2026-08-11

Status

Claude Opus 5.5: Active
Nemotron 3.5 Lightning: Active

Input formats

Claude Opus 5.5: textimagefile
Nemotron 3.5 Lightning: text

Output formats

Claude Opus 5.5: text
Nemotron 3.5 Lightning: text

Pricing & capacity

Pricing & capacity	Claude Opus 5.5	Nemotron 3.5 Lightning
Input / 1M tokens	$4.00	$0.05
Output / 1M tokens	$20	$0.14
Cached input / 1M	$0.20	$0.02
Monthly cost	$180	$1.68
Context window	1M	262K
Maximum output	128K	33K

Input / 1M tokens

Claude Opus 5.5: $4.00
Nemotron 3.5 Lightning: $0.05

Output / 1M tokens

Claude Opus 5.5: $20
Nemotron 3.5 Lightning: $0.14

Cached input / 1M

Claude Opus 5.5: $0.20
Nemotron 3.5 Lightning: $0.02

Monthly cost

Claude Opus 5.5: $180
Nemotron 3.5 Lightning: $1.68

Context window

Claude Opus 5.5: 1M
Nemotron 3.5 Lightning: 262K

Maximum output

Claude Opus 5.5: 128K
Nemotron 3.5 Lightning: 33K

Benchmarks & performance

Benchmarks & performance	Claude Opus 5.5	Nemotron 3.5 Lightning
Intelligence Index	57.6	12.9
GPQA	Not listed	74.3%
Humanity’s Last Exam	61.4%	10.6%
SciCode	66.9%	32.1%
Output speed	91 tokens/s	301 tokens/s
Time to first token	755.54 s	0.56 s
DesignArena rating	1,407	Not listed
DesignArena win rate	65.3%	Not listed

Intelligence Index

Claude Opus 5.5: 57.6
Nemotron 3.5 Lightning: 12.9

GPQA

Claude Opus 5.5: Not listed
Nemotron 3.5 Lightning: 74.3%

Humanity’s Last Exam

Claude Opus 5.5: 61.4%
Nemotron 3.5 Lightning: 10.6%

SciCode

Claude Opus 5.5: 66.9%
Nemotron 3.5 Lightning: 32.1%

Output speed

Claude Opus 5.5: 91 tokens/s
Nemotron 3.5 Lightning: 301 tokens/s

Time to first token

Claude Opus 5.5: 755.54 s
Nemotron 3.5 Lightning: 0.56 s

DesignArena rating

Claude Opus 5.5: 1,407
Nemotron 3.5 Lightning: Not listed

DesignArena win rate

Claude Opus 5.5: 65.3%
Nemotron 3.5 Lightning: Not listed

Tools & features

Tools & features	Claude Opus 5.5	Nemotron 3.5 Lightning
Function calling	Supported	Supported
Structured outputs	Supported	Supported
JSON mode	Supported	Supported
Reasoning	Supported	Supported
Log probabilities	Not listed	Supported
Deterministic seed	Not listed	Supported
Prompt caching	Supported	Supported

Function calling

Claude Opus 5.5: Supported
Nemotron 3.5 Lightning: Supported

Structured outputs

Claude Opus 5.5: Supported
Nemotron 3.5 Lightning: Supported

JSON mode

Claude Opus 5.5: Supported
Nemotron 3.5 Lightning: Supported

Reasoning

Claude Opus 5.5: Supported
Nemotron 3.5 Lightning: Supported

Log probabilities

Claude Opus 5.5: Not listed
Nemotron 3.5 Lightning: Supported

Deterministic seed

Claude Opus 5.5: Not listed
Nemotron 3.5 Lightning: Supported

Prompt caching

Claude Opus 5.5: Supported
Nemotron 3.5 Lightning: Supported

API & availability

API & availability	Claude Opus 5.5	Nemotron 3.5 Lightning
API identifier	`claude-opus-5.5`	`nemotron-3.5-lightning`
Prices checked	Oct 8, 2026	Oct 8, 2026

API identifier

Claude Opus 5.5: claude-opus-5.5
Nemotron 3.5 Lightning: nemotron-3.5-lightning

Prices checked

Claude Opus 5.5: Oct 8, 2026
Nemotron 3.5 Lightning: Oct 8, 2026

About the models

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...

Full pricing & details

Nemotron 3.5 Lightning

NVIDIA Nemotron 3.5 Lightning is an open mixture-of-experts model from NVIDIA, with 3B active parameters out of 30B total. It is suited for high-throughput agentic workloads and specialized tasks that...

Full pricing & details

Comparison FAQ

Claude Opus 5.5: $4.00 input and $20 output per million tokens. Nemotron 3.5 Lightning: $0.05 input and $0.14 output per million tokens. The cheaper choice depends on your input-to-output ratio; a model can have a lower input rate but a higher output rate.

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Monthly workload

Monthly cost breakdown

Performance comparison

Overview

Pricing & capacity

Benchmarks & performance

Tools & features

API & availability

About the models

Claude Opus 5.5

Nemotron 3.5 Lightning

Comparison FAQ

Which costs less: Claude Opus 5.5 or Nemotron 3.5 Lightning?

How much do Claude Opus 5.5 or Nemotron 3.5 Lightning cost per month?

Which has a larger context window: Claude Opus 5.5 or Nemotron 3.5 Lightning?

Which is better for coding: Claude Opus 5.5 or Nemotron 3.5 Lightning?

How do Arena Elo, DesignArena, Intelligence Index and MMLU-Pro differ?

Which responds faster: Claude Opus 5.5 or Nemotron 3.5 Lightning?

Do Claude Opus 5.5 or Nemotron 3.5 Lightning support images, audio or video?

Do Claude Opus 5.5 or Nemotron 3.5 Lightning support tool calling and structured outputs?

Can prompt caching reduce the cost of Claude Opus 5.5 or Nemotron 3.5 Lightning?

Are Claude Opus 5.5 or Nemotron 3.5 Lightning available through an API?

Popular model comparisons