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Claude Opus 4.8 vs GPT 5

At a glance

Anthropic's most capable Opus yet, built for long-horizon autonomous agents and frontier coding.

891M ctx$5.00/$25.00 per M#4/92

OpenAI's powerful general-purpose frontier model.

82400K ctx$1.25/$10.00 per M#20/92
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
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·Provider·OpenRouter· as of 2026-07-10
Smarter9%
Capability
CapabilityECI9%89.2
Reasoning & Knowledge
Graduate Science6%91.0%Expert-Level—Factual Recall39.5%
Math
Math Problems—Competition Math8%98.3%Research Math46%47.2%
Coding
Real-World Coding20%88.6%Code Editing—
Agentic
Terminal Tasks—Novel Reasoning631%72.1%Task Horizon—
Reasoning
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper66%
Capability
CapabilityECI81.8
Reasoning & Knowledge
Graduate Science86.2%Expert-Level25.3%Factual Recall28%50.6%
Math
Math Problems98.1%Competition Math91.4%Research Math32.4%
Coding
Real-World Coding73.6%Code Editing88.0%
Agentic
Terminal Tasks49.6%Novel Reasoning9.9%Task Horizon3.4h
Specs
1M
Context
128K
Max output
May 2026
Released
400K
Context
128K
Max output
Aug 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$5.00/M tokens
Output$25.00/M tokens
Cache read$0.50/M tokens
Cache write$6.25/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input75%$1.25/M tokens
Output60%$10.00/M tokens
Cache read75%$0.13/M tokens
Web search$0.01/search
Chat with Claude Opus 4.8Go to model
Chat with GPT 5Go to model
Frequently Asked Questions: Claude Opus 4.8 vs GPT 5▼

Which is better, Claude Opus 4.8 or GPT 5?

▼

Based on the Capability Index, Claude Opus 4.8 scores higher (89.2 vs 81.8). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Claude Opus 4.8 or GPT 5?

▼

GPT 5 has a lower blended cost. Claude Opus 4.8: $5.00 input / $25.00 output. GPT 5: $1.25 input / $10.00 output.

Which has a larger context window, Claude Opus 4.8 or GPT 5?

▼

Claude Opus 4.8 has a larger context window: Claude Opus 4.8 supports 1M tokens vs GPT 5 at 400K tokens.

Do both Claude Opus 4.8 and GPT 5 support vision?

▼

Yes, both Claude Opus 4.8 and GPT 5 support vision/image input.

Which has better coding performance, Claude Opus 4.8 or GPT 5?

▼

Claude Opus 4.8 scores higher on SWE-bench Verified: Claude Opus 4.8 resolves 89% vs GPT 5 at 74%.

What are the key differences between Claude Opus 4.8 and GPT 5?

▼

Key differences: Claude Opus 4.8 has a notably higher capability index (7.4 point gap); GPT 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 Claude Opus 4.8 and GPT 5 for free on idapt.app to see which performs better for your specific needs.

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