Skip to main content
AI Choice Engine

Model comparison

Amazon Nova 2 Pro vs Claude Sonnet 5.5

Amazon against Anthropic, compared on context, price, and attributed benchmark results.

Recorded profile verification October 2, 2026Individual provider fields may changeEvidence confidence: Medium — see receipts below

Amazon

Amazon Nova 2 Pro

Balanced

vs

Anthropic

Claude Sonnet 5.5

Balanced

AI model capability comparison
SpecificationAmazon Nova 2 ProClaude Sonnet 5.5
ProviderAmazonAnthropic
TierBalancedBalanced
Context window1M1M
Max outputNot verifiedUnverified128K
Input / 1M tokensWinner: $1.25$2
Output / 1M tokens$10$10
WeightsClosedClosed
ParametersNot verifiedUnverifiedNot verifiedUnverified
Reasoning levelslow, medium, highlow, medium, high, xhigh, max
Modalitiestext, image, video, audiotext, image
API model idNot verifiedUnverifiedclaude-sonnet-5-5
ReleasedDecember 2, 2025September 28, 2026
Artificial Analysis Intelligence Index [max] · source date Claude Sonnet 5.5: 2026-10-01Not verifiedUnverified56
Terminal-Bench 4.0 [max] · source date Claude Sonnet 5.5: 2026-10-01Not verifiedUnverified63.6
Terminal-Bench 4.0 · source date Claude Sonnet 5.5: 2026-10-01Not verifiedUnverified70.6
CursorBench 4.0 [max] · source date Claude Sonnet 5.5: 2026-10-01Not verifiedUnverified55.5
Humanity's Last Exam · source date Claude Sonnet 5.5: 2026-10-01Not verifiedUnverified64.5
FrontierCode 1.1 (Main) [xhigh] · source date Claude Sonnet 5.5: 2026-10-01Not verifiedUnverified52.1
OSWorld 2.1 · source date Claude Sonnet 5.5: 2026-10-01Not verifiedUnverified80.1

Dates beside benchmark scores refer to the linked source’s publication or capture date unless that source explicitly states when it measured the result. A shared URL alone does not establish comparable runs; unverified setups are marked. Prices are USD per million tokens at standard rates, excluding batch and caching discounts. Values we could not confirm from the provider are shown as “Not verified” rather than estimated.

Benchmark receipts

Where each score comes from, and how far it can be compared across models.

  • Source date2026-10-01
    Anthropic (vendor-reported) (partial task set)
  • Source date2026-10-01
    Anthropic (vendor-reported)
  • Source date2026-10-01
    Anthropic (vendor-reported) (with tools)

    Frontier-knowledge ceiling: extremely hard multi-domain questions written to be near-impossible without deep expertise.

    Comparable with caveatSubset/tool configurations (text-only vs with-tools) differ between vendors and materially change scores; must match configuration to compare.

  • Source date2026-10-01
    Cursor (vendor-run coding agent)
  • Source date2026-10-01
    Artificial Analysis (independent, mini-swe-agent)

    Agentic terminal work: long multi-step tasks executed in a sandboxed shell environment.

    Comparable with caveatDo not directly compare scores across Terminal-Bench versions: 4.0 revises and prunes the 3.0 task set and changes environment resources, requiring fresh trials. Within 4.0, harness, time limit, tools, sampling and resource settings must match; maintainer-agent and Artificial Analysis runs are not interchangeable.

  • Source date2026-10-01
    Anthropic (vendor-reported)

    Agentic terminal work: long multi-step tasks executed in a sandboxed shell environment.

    Comparable with caveatDo not directly compare scores across Terminal-Bench versions: 4.0 revises and prunes the 3.0 task set and changes environment resources, requiring fresh trials. Within 4.0, harness, time limit, tools, sampling and resource settings must match; maintainer-agent and Artificial Analysis runs are not interchangeable.

  • Source date2026-10-01
    Artificial Analysis (Claude Sonnet 5.5 (max with fallback))

    Composite index blending reasoning, knowledge, and coding evals into one 0–100 score.

    Comparable with caveatOnly same-version scores are comparable. v4.3.2 was rebaselined (the top score fell from 66 on v4.1.1 to ~58), so v4.1.1 figures must not be compared with v4.3.2 figures — check the cited source and its date.

Pricing tiers

Amazon Nova 2 Pro: Bedrock Global Standard $1.25/$10 per MTok; single-region $1.375/$11. Global Flex/Batch $0.625/$5; Global Priority $2.1875/$17.50. These are native Nova 2.0 Pro meters in the September 30, 2026 offer file, not custom-model or training rates. No Pro cached-input meter is present in this snapshot. Price meters do not establish account access.

Claude Sonnet 5.5: Standard $2/$10 per MTok with no long-context surcharge; cache reads $0.20, 5-minute writes $2.50 and 1-hour writes $4. Batch $1/$5. US-only inference adds 10% where supported. The 300K output limit requires the Batch API beta header output-300k-2026-03-24; standard output stays 128K. Knowledge cutoff Jun 2026; retirement not sooner than September 28, 2027.

BalancedRecord checked October 2, 2026

Amazon Nova 2 Pro

Amazon's closed Nova 2 Pro preview accepts text, images, video and speech and generates text; its launch announcement specifies a one-million-token context.

Best for

  • AWS-native workloads
  • Multimodal
  • Long-context

Watch out

Preview access was announced for Nova Forge customers through their AWS account team. Current account access, a stable API model ID and a hard output cap remain unverified. Launch documentation names low/medium/high thinking; the current detailed thinking guide covers Lite only, so do not transfer its request rules to Pro. The October 1 Artificial Analysis 14-point Pro row is an estimate and is withheld. Omission from a current model list does not prove retirement.

BalancedRecord checked October 1, 2026

Claude Sonnet 5.5

Anthropic’s newer Sonnet model for everyday coding and knowledge work at the same $2/$10 token rates as Sonnet 5.

Best for

  • Everyday coding
  • Document and slide creation
  • Fast iteration

Watch out

Vendor scores use Anthropic's evaluation setup. between_tools turns off up-front thinking only at high effort or below. Forced tool use and non-default temperature/top_p/top_k error; older computer_20251124 and some advisors are rejected. Thinking blocks are model/conversation-bound; progress text needs a display setting that returns it. Haiku 5.5 is announced, not released as of October 1.

When the cheaper one wins

Both charge $10 per million output tokens at standard rates, so output price is not the split. Prefer the row whose “best for” line matches the job, then confirm the live vendor rate.

Run the model picker

Evidence confidence: Medium

How strong and complete the evidence behind this comparison is — not a prediction of which model is better.

  • Pricing verified on both sides — Input and output rates are verified for both models.
  • 3/5 core specs verified on both sides — Not published for at least one side: max output, parameter count.
  • No directly aligned benchmark setup — No benchmark has matching cited sources, source dates, units, effort and recorded run details on both models.
  • Verified within the last 90 days — Older of the two catalog checks was 25 days ago.
  • Both models carry source citations — Each side has at least two catalog sources on record.

Source receipts

Each catalog figure was checked against the provider or an independent second source on the date shown.

Related comparisons

Diving deeper on one model? Amazon Nova 2 Pro · Claude Sonnet 5.5

Common questions

Amazon Nova 2 Pro vs Claude Sonnet 5.5

Answered from the verified figures on this page rather than general guidance.

Is Amazon Nova 2 Pro or Claude Sonnet 5.5 cheaper for input?
Amazon Nova 2 Pro is cheaper at $1.25 per million input tokens, against $2 for Claude Sonnet 5.5 — roughly 1.6× the price. Estimate both input and output token volume for your workload. These are base rates; Amazon Nova 2 Pro: Bedrock Global Standard $1.25/$10 per MTok; single-region $1.375/$11. Global Flex/Batch $0.625/$5; Global Priority $2.1875/$17.50. These are native Nova 2.0 Pro meters in the September 30, 2026 offer file, not custom-model or training rates. No Pro cached-input meter is present in this snapshot. Price meters do not establish account access. Claude Sonnet 5.5: Standard $2/$10 per MTok with no long-context surcharge; cache reads $0.20, 5-minute writes $2.50 and 1-hour writes $4. Batch $1/$5. US-only inference adds 10% where supported. The 300K output limit requires the Batch API beta header output-300k-2026-03-24; standard output stays 128K. Knowledge cutoff Jun 2026; retirement not sooner than September 28, 2027.
Is Amazon Nova 2 Pro or Claude Sonnet 5.5 cheaper for output?
Both list a base rate of $10 per million output tokens. Actual cost can differ with context tiers, caching, tools and other charges. Amazon Nova 2 Pro: Bedrock Global Standard $1.25/$10 per MTok; single-region $1.375/$11. Global Flex/Batch $0.625/$5; Global Priority $2.1875/$17.50. These are native Nova 2.0 Pro meters in the September 30, 2026 offer file, not custom-model or training rates. No Pro cached-input meter is present in this snapshot. Price meters do not establish account access. Claude Sonnet 5.5: Standard $2/$10 per MTok with no long-context surcharge; cache reads $0.20, 5-minute writes $2.50 and 1-hour writes $4. Batch $1/$5. US-only inference adds 10% where supported. The 300K output limit requires the Batch API beta header output-300k-2026-03-24; standard output stays 128K. Knowledge cutoff Jun 2026; retirement not sooner than September 28, 2027.
Which has the larger context window, Amazon Nova 2 Pro or Claude Sonnet 5.5?
Both accept about 1M tokens of context, so document length will not decide between them.
Do Amazon Nova 2 Pro and Claude Sonnet 5.5 support the same reasoning levels?
Amazon Nova 2 Pro exposes low, medium, high, while Claude Sonnet 5.5 exposes low, medium, high, xhigh, max.
Should I use Amazon Nova 2 Pro or Claude Sonnet 5.5?
Both are classified in our balanced tier; this editorial grouping does not imply equal capability. Amazon Nova 2 Pro is a candidate for aws-native workloads; Claude Sonnet 5.5 is a candidate for everyday coding. Compare accuracy, tool reliability, latency and cost on representative tasks.

Next step

Choosing between them

The verified figures that separate this pair, computed from the catalog rather than restated boilerplate.

  • Input price: Amazon Nova 2 Pro costs $1.25 per 1M tokens versus $2 for Claude Sonnet 5.5 — a 1.6x difference at the headline tier.
Run the model pickerEstimate stack costAll model comparisons

Choosing a harness rather than a model — Cursor, Copilot, Claude Code, Windsurf, or Lovable? Compare agentic harnesses · Latest releases.