OpenAI models on Felo

Compare the OpenAI models currently available through Felo, including model IDs, pricing, context windows, and Quick Start examples.

models

1.05M

max context

protocols

Flagships first

ModelContextPricing

GPT-6 Astra

OpenAIgpt-6-astra

OpenAI's most capable model, built for the hardest end-to-end work: complex reasoning, agentic coding, computer use, web research, and professional document creation. 1.05M context window with cached input and cache-write rates.

Complex reasoningAgentic codingComputer useProfessional work

Context

1.05M

Max output

128K

Input tokens

$10.00 /M

Output tokens

$50.00 /M

GPT-5.6 Sol

OpenAIgpt-5.6-sol

The flagship GPT-5.6 tier for complex reasoning, advanced coding, long-context analysis, and high-capability agent workflows.

Flagship reasoningAdvanced codingLong-context analysisAgent orchestration

Context

1.05M

Max output

128K

Input tokens

$5.00 /M

Output tokens

$30.00 /M

GPT-5.5 Pro

OpenAIgpt-5.5-pro

A premium model route for deep reasoning, complex software engineering, long-horizon planning, and high-value agent workflows.

Deep reasoningComplex codingPlanningHigh-value analysis

Context

1.05M

Max output

128K

Input tokens

$30.00 /M

Output tokens

$180.00 /M

GPT-5.6 Terra

OpenAIgpt-5.6-terra

The balanced GPT-5.6 tier for production coding agents, reasoning tasks, tool use, and multi-step app workflows.

CodingAgent workflowsBalanced reasoningTool use

Context

1.05M

Max output

128K

Input tokens

$2.50 /M

Output tokens

$15.00 /M

GPT-5.5

OpenAIgpt-5.5

A strong general-purpose model route for coding, reasoning, research, and production agent workloads through Responses and Chat Completions compatible APIs.

Coding agentsReasoning tasksResearch workflowsApp assistants

Context

1.05M

Max output

128K

Input tokens

$5.00 /M

Output tokens

$30.00 /M