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GPT-5 vs Kagi

GPT-5 and Kagi are both Conversational AI tools in our directory. This side-by-side comparison covers pricing, editorial scores, supported platforms, key features and open-source status so you can decide which one fits your needs.

Side-by-side comparison

AttributeGPT-5Kagi
Product statusActiveStatus not recorded
VendorOpenAIKagi
Rating★ 4.7★ 4.6
PricingPay-as-you-goPaid
PlatformsAPIWeb, Mobile, API
Key featuresConfigurable minimal/low/medium/high reasoning effort, Text and image input; text output, Function calling and structured outputsSearch with lenses and source preferences, Assistant with optional web access, Model switching and thread exports
Headquarters——
Launched2025—
Open sourceNoNo

Key differences

  • GPT-5 carries the higher editorial score (4.7★ vs 4.6★).
  • GPT-5 is Pay-as-you-go, while Kagi is Paid.
  • GPT-5 runs on API; Kagi runs on Web, Mobile, API.

GPT-5 and Kagi at a glance

GPT-5

OpenAI

OpenAI's original GPT-5 API reasoning model with configurable effort, text/image input and text output. The gpt-5-2025-08-07 snapshot is deprecated with API removal scheduled for December 11, 2026.

Rating
4.7★
Pricing
Pay-as-you-go

Editorial verdict

A legacy API model with a published retirement deadline. Existing users can use this record to plan migration; new long-lived deployments should evaluate supported models and verify account access.

Strengths

  • Explicit reasoning-effort settings
  • Documented function calls and structured outputs
  • Snapshot ID helps track a legacy integration

Key features

  • Configurable minimal/low/medium/high reasoning effort
  • Text and image input; text output
  • Function calling and structured outputs
  • Streaming responses
  • Original snapshot scheduled to retire December 11, 2026

Best for

  • Maintaining an existing coding or analysis integration during migration
  • Comparing structured outputs and tool behavior against a replacement
Read the full GPT-5 review →

Kagi

Kagi

Subscription search with filtering and an optional multi-model Assistant; search quotas, AI usage budgets, provider retention and commercial rights require separate checks.

Rating
4.6★
Pricing
Paid

Editorial verdict

Consider Kagi if paid search fits your workflow; verify the AI budget, data path and commercial permissions before adopting it.

Strengths

  • Search and Assistant under one membership
  • Documented usage and provider privacy tables

Key features

  • Search with lenses and source preferences
  • Assistant with optional web access
  • Model switching and thread exports
  • Plan-dependent AI usage budget

Best for

  • Source-checked web research
  • Plan-budgeted assistant questions
Read the full Kagi review →

Feature overlap

  • The two tools have no listed features in common — see both feature lists above.
  • GPT-5 also lists: Configurable minimal/low/medium/high reasoning effort, Text and image input; text output, Function calling and structured outputs, Streaming responses, Original snapshot scheduled to retire December 11, 2026
  • Kagi also lists: Search with lenses and source preferences, Assistant with optional web access, Model switching and thread exports, Plan-dependent AI usage budget

Frequently asked questions

Is GPT-5 or Kagi better?

By editorial score, GPT-5 scores higher (4.7★ vs 4.6★). Both are capable Conversational AI tools, so review the feature comparison for your use case.

Which is cheaper, GPT-5 or Kagi?

GPT-5 is Pay-as-you-go and Kagi is Paid. Check each product page for current plan details.

Are GPT-5 and Kagi open source?

No — neither GPT-5 nor Kagi is open source.

What platforms do GPT-5 and Kagi support?

GPT-5 supports API; Kagi supports Web, Mobile, API.

What are the main features of GPT-5 and Kagi?

GPT-5: Configurable minimal/low/medium/high reasoning effort, Text and image input; text output, Function calling and structured outputs, Streaming responses, Original snapshot scheduled to retire December 11, 2026. Kagi: Search with lenses and source preferences, Assistant with optional web access, Model switching and thread exports, Plan-dependent AI usage budget.

Visit GPT-5 →Visit Kagi →

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