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Anthropic: Claude Opus 5.5

claude-opus-5-5

Claude Opus 5.5 (claude-opus-5-5) by Anthropic is live on Newton’s OpenAI-compatible API gateway with exact per-token metering and zero monthly seat lock-in.

Modalities
Text, code, reasoning → text
Price
$0.00 per request
Context
Not published
Released
2025–2026
Knowledge Cutoff
2025–2026

Providers

Newton’s exposes one customer-facing gateway route. Supplier and upstream routing details are kept internal.

RouteStatusInput /MOutput /MCache read /M
Newton’s gateway
OpenAI-compatible API
Available———

Pricing

This model has a fixed published charge for each request.

Per request$0.00

Official token price comparison isn't verified yet. Newton's token rates are hidden until equivalent official evidence is current.

Performance

Latency and throughput history are still collecting. Newton’s will show percentile, time window, and sample size once enough production observations exist.

Performance history is collecting—

Availability

Availability history is not yet published. Current catalog state is shown without converting a single verification run into an uptime claim.

Current stateAvailable
Last verifiedNov 1, 2026, 12:24 PM
Requested modelExact model

Availability and billing

Current catalog availability and billing status are shown below. Reported-model ID checks are not independent proof of the underlying model’s provenance.

  • Model availabilityAvailable
  • Billing statusVerified

Quick Start

Use the OpenAI-compatible API with the exact model ID.

curl https://newtons.dev/api/v1/responses \
  -H "Authorization: Bearer $NEWTONS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"claude-opus-5-5","input":"Hello from Newtons"}'

Activity

Request-level tokens, cost, model identity, and latency appear in your Activity after you make a request.

Open Activity →

Head-to-Head Comparisons

Compare claude-opus-5-5 against other frontier models served through Newton’s unified OpenAI-compatible gateway:

Claude Opus 5.5 vs Claude Opus 5
Head-to-Head API Comparison
Claude Opus 5.5 vs GPT-6.1 Sol
Head-to-Head API Comparison
Claude Opus 5.5 vs Claude Sonnet 5.5
Head-to-Head API Comparison
Claude Opus 5.5 vs DeepSeek V4 Pro
Head-to-Head API Comparison
Claude Opus 5.5 vs Gemini 3.8 Flash High
Head-to-Head API Comparison
Claude Opus 5.5 vs Grok 4.7
Head-to-Head API Comparison