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GPT 6 Astra Pro vs Claude Sonnet 5

At a glance

OpenAI's GPT-6 Astra served in pro reasoning mode for the hardest problems.

1.1M ctx$10.00/$50.00 per M

Anthropic's fifth-generation Sonnet — near-Opus intelligence at Sonnet speed and price.

801M ctx$2.00/$10.00 per M#26/92
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Capability
Capability—
Reasoning & Knowledge
Graduate Science—Factual Recall—
Math
Competition Math—
Reasoning
CI 72.7-84.7Provisional
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper80%
Capability
CapabilityECI80.1
Reasoning & Knowledge
Graduate Science90.5%Factual Recall25.0%
Math
Competition Math94.7%
Specs
1.1M
Context
128K
Max output
Sep 2026
Released
1M
Context
128K
Max output
Jun 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$10.00/M tokens
Output$50.00/M tokens
Cache read$1.00/M tokens
Cache write$12.50/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input80%$2.00/M tokens
Output80%$10.00/M tokens
Cache read80%$0.20/M tokens
Cache write80%$2.50/M tokens
Web search$0.01/search
Chat with GPT 6 Astra ProGo to model
Chat with Claude Sonnet 5Go to model
Frequently Asked Questions: GPT 6 Astra Pro vs Claude Sonnet 5▼

Which is better, GPT 6 Astra Pro or Claude Sonnet 5?

▼

Both GPT 6 Astra Pro and Claude Sonnet 5 are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, GPT 6 Astra Pro or Claude Sonnet 5?

▼

Claude Sonnet 5 has a lower blended cost. GPT 6 Astra Pro: $10.00 input / $50.00 output. Claude Sonnet 5: $2.00 input / $10.00 output.

Which has a larger context window, GPT 6 Astra Pro or Claude Sonnet 5?

▼

GPT 6 Astra Pro has a larger context window: GPT 6 Astra Pro supports 1.1M tokens vs Claude Sonnet 5 at 1M tokens.

Do both GPT 6 Astra Pro and Claude Sonnet 5 support vision?

▼

Yes, both GPT 6 Astra Pro and Claude Sonnet 5 support vision/image input.

What are the key differences between GPT 6 Astra Pro and Claude Sonnet 5?

▼

Key differences: Claude Sonnet 5 is significantly cheaper. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both GPT 6 Astra Pro and Claude Sonnet 5 for free on idapt.app to see which performs better for your specific needs.

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