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Claude Sonnet 5 vs GPT Mini (120b)

At a glance

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

801M ctx$2.00/$10.00 per M#26/92

OpenAI's budget-friendly reasoning model — fast and surprisingly capable.

73131K ctx$0.04/$0.17 per M#49/92
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
CI 72.7-84.7Provisional
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Smarter9%
Capability
CapabilityECI9%80.1
Reasoning & Knowledge
Graduate Science90.5%Factual Recall25.0%
Math
Competition Math94.7%
Coding
Code Editing—
Agentic
Terminal Tasks—Task Horizon—
Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper98%
Capability
CapabilityECI73.2
Reasoning & Knowledge
Graduate Science—Factual Recall—
Math
Competition Math—
Coding
Code Editing41.8%
Agentic
Terminal Tasks18.7%Task Horizon42min
Specs
1M
Context
128K
Max output
Jun 2026
Released
131K
Context
66K
Max output
Aug 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$2.00/M tokens
Output$10.00/M tokens
Cache read$0.20/M tokens
Cache write$2.50/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input98%$0.04/M tokens
Output98%$0.17/M tokens
Chat with Claude Sonnet 5Go to model
Chat with GPT Mini (120b)Go to model
Frequently Asked Questions: Claude Sonnet 5 vs GPT Mini (120b)▼

Which is better, Claude Sonnet 5 or GPT Mini (120b)?

▼

Based on the Capability Index, Claude Sonnet 5 scores higher (80.1 vs 73.2). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Claude Sonnet 5 or GPT Mini (120b)?

▼

GPT Mini (120b) has a lower blended cost. Claude Sonnet 5: $2.00 input / $10.00 output. GPT Mini (120b): $0.04 input / $0.17 output.

Which has a larger context window, Claude Sonnet 5 or GPT Mini (120b)?

▼

Claude Sonnet 5 has a larger context window: Claude Sonnet 5 supports 1M tokens vs GPT Mini (120b) at 131K tokens.

Do both Claude Sonnet 5 and GPT Mini (120b) support vision?

▼

Claude Sonnet 5 supports vision/image input, but GPT Mini (120b) does not.

What are the key differences between Claude Sonnet 5 and GPT Mini (120b)?

▼

Key differences: Claude Sonnet 5 has a notably higher capability index (6.9 point gap); GPT Mini (120b) is significantly cheaper; only Claude Sonnet 5 supports vision input. 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 Claude Sonnet 5 and GPT Mini (120b) for free on idapt.app to see which performs better for your specific needs.

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