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Claude Opus Latest vs GPT-5.6 Sol Pro

How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Claude Opus Latest and GPT-5.6 Sol Pro.

Anthropic

Claude Opus Latest

This model always redirects to the latest model in the Claude Opus family.

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OpenAI

GPT-5.6 Sol Pro

GPT-5.6 Sol Pro is the same underlying model as [GPT-5.6 Sol](https://openrouter.ai/openai/gpt-5.6-sol), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

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Technical Specifications

SpecificationClaude Opus LatestGPT-5.6 Sol Pro
ProviderAnthropicOpenAI
Context Window1,000,000 tokens1,050,000 tokens
Agent SuitabilityN/AN/A
Time to First Token (TTFT)N/AN/A
Deployment Modelmanaged apimanaged api
Production Stabilitybetabeta
API AvailableYesYes
Released Date2026-04-212026-07-09

API Pricing Comparison

Input Price per Million Tokens

Claude Opus Latest

$5.00

GPT-5.6 Sol Pro

$5.00

Output Price per Million Tokens

Claude Opus Latest

$25.00

GPT-5.6 Sol Pro

$30.00

Want to test both models live?

Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.

Benchmark Performance Metrics

Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.

Claude Opus Latest Quirks & Gotchas

No developer gotchas reported.

GPT-5.6 Sol Pro Quirks & Gotchas

No developer gotchas reported.