Alternatives to GPT-6.1 Terra

OpenAI GPT-6.1 Sol: near-Astra intelligence for coding, computer use and professional work, priced at one-fifth of GPT-6 Astra's standard API rates.

OpenAI GPT-6 Luna: the cheapest GPT-6 tier at $0.10/$0.50 per 1M tokens with a 1.05M context window and max-effort reasoning.

OpenAI GPT-5.6 Terra: balanced daily driver in the 5.6 family, 400k context, $2.50/$15 per 1M tokens.

OpenAI GPT-5.6 Luna: fast affordable GPT-5.6 tier, 128k context, $1/$6 per 1M tokens.

OpenAI frontier flagship GPT-5.6 Sol: 1.05M context, effort up to max plus ultra, $5/$30 per 1M tokens.

OpenAI GPT-6 Sol: 1.05M context, reasoning up to max effort and $2/$10 per 1M tokens, with day-one GitHub Copilot support.

Anthropic's frontier Opus model with 1M-token context and effort-controlled reasoning, near-Fable-5 intelligence at Opus-4.8 pricing for agents and coding.

Anthropic's generally available Fable-class model for coding and knowledge work. $10/$50 per 1M tokens, cache reads $0.25, API id claude-fable-5-1.

Anthropic's Mythos-class flagship made safe for general use, with 1M-token context, frontier coding and vision, days-long agentic autonomy, and $10/$50 per 1.

An open-source multilingual multimodal chat model from Zhipu AI with advanced thinking capabilities, exceptional coding performance, and enhanced UI generation.

Mistral Large 4 is Mistral's public-preview multimodal MoE model with a 1M-token context window and open weights planned for release.

Anthropic's previous Sonnet snapshot: 200k context, $3/$15 per 1M tokens. Docs now sell newer Claude 4.6 and Claude 5 lines.

DeepSeek small agent model: 284B/13B MoE, 1M context, MIT weights, $0.14/$0.28 per 1M tokens.