PriceIndex

AI model capabilities

AI models that support reasoning

Compare models with listed reasoning controls, token prices and published intelligence scores. Compare 228 supporting models by input price, output price, context window and published intelligence. Find the cheapest option for a reference text workload, then check the serving API before you build.

228 supporting models32 AI providersUSD · prices per 1M tokens

Lowest reference cost

Ling 3.0 Flash

$0.04

1M input + 250K output tokens. Tool fees and discounts excluded.

Highest published intelligence

Claude Opus 5.5

57.6 AA Intelligence Index

Among supporting models with a published score; not a capability-specific benchmark.

Cheapest AI models with reasoning

Ranked by the cost of 1 million input and 250,000 output tokens at standard rates. A different token mix can change the cheapest model. Support requires an explicitly listed catalog feature, not an inference from a model family.

GLM 5.3 FlashZ.ai
Input /1M
$0.03
Output /1M
$0.08
Reference cost
$0.05
Context
1M
AA Intelligence
41.8
gpt-oss-20bOpenAI
Input /1M
$0.03
Output /1M
$0.13
Reference cost
$0.06
Context
131K
AA Intelligence
9
Qwen3.7 FlashQwen
Input /1M
$0.03
Output /1M
$0.13
Reference cost
$0.06
Context
1M
AA Intelligence
—
Solar Mini 4Upstage
Input /1M
$0.05
Output /1M
$0.20
Reference cost
$0.10
Context
524K
AA Intelligence
—

Showing 15 of 228

228 matching models · Missing intelligence scores are shown as —.

What is reasoning?

Reasoning-capable APIs may provide controls for additional model computation on complex tasks. A listed reasoning parameter does not establish accuracy, reveal private internal reasoning or guarantee that a model is better for every task. Compare published intelligence scores alongside evaluations of your own work.

Before choosing a model

  • Check reasoning-effort controls and their availability on your API.
  • Verify whether reasoning tokens are billable output tokens.
  • Compare task accuracy, latency and total cost, not just token rates.

Estimate your actual workload

Use your request volume and prompt and response sizes to compare monthly text-token costs. Add any search, external tool or provider-specific charges separately. Standard token prices do not assume cache hits or batch discounts.

LLM token cost calculator Pricing methodology

Reasoning FAQs

228 active models with positive input and output prices currently list reasoning in the PriceIndex catalog. The table lists every match. A model is included only when its tracked feature data explicitly lists this capability; missing data is not treated as support.

Ling 3.0 Flash has the lowest estimated text-token cost in this list for 1 million input tokens and 250,000 output tokens: $0.0368. A different input/output mix can change the ranking. This excludes tool fees, caching, discounts and taxes.

No. Capability availability can differ between serving APIs and model versions. Follow a model’s API documentation link and verify the exact version, endpoint and settings before choosing it.

We use standard USD input and output token prices: input price × 1 million tokens plus output price × 250,000 tokens, divided by 1 million. The directory excludes retired models, missing prices and zero-priced entries. Published AA Intelligence Index scores are shown when available and never estimated.

Check reasoning-effort controls and their availability on your API. Verify whether reasoning tokens are billable output tokens. Compare task accuracy, latency and total cost, not just token rates.

Explore more AI capabilities