AI Foundation Models
Explore frontier foundation models, verified benchmarks, 6-axis capability radar, hardware VRAM sizing, and real-time token pricing economics.
GPT-6 Astra
OpenAI's interstellar autonomous research summit for the GPT-6 generation, achieving 92.8% on SWE-bench Verified, 96.2% on GPQA Diamond, and native omni-modal execution across 1M context.
GPT-6.1 Sol
OpenAI's latest October 2026 refined solar flagship model, bringing 92.0% SWE-bench resolution, 97.4% function-calling accuracy on BFCL v3, and lower pricing ($3.50/$14) across 1M context.
GPT-6 Sol
Primary solar flagship model of the GPT-6 generation, delivering 91.0% SWE-bench resolution, 1M context, and $4/$16 pricing for frontier developer automation.
OpenAI Decisions
OpenAI Decisions is OpenAI's dedicated high-throughput decision-making API powered by GPT-6 Luna, accessed via the POST /v1/decisions endpoint. Designed for agent routing, automated content moderation, and classification, it processes typed questions (predicates, categorical choices, and rubric scores) roughly 10x faster than standard generation, billed at $0.10 per million input tokens with zero output-token fees.
GPT-5.5 Pro
April 2026 professional reasoning summit, combining 1-million-token context with 89.5% SWE-bench Verified and 93.8% GPQA Diamond scores.
GPT-5.6 Sol
July 2026 solar flagship model representing OpenAI's primary frontier intelligence tier, featuring 1M context, 89.8% on SWE-bench Verified, and enhanced agent synthesis.
GPT-5.4 Pro
March 2026 professional reasoning powerhouse from OpenAI, achieving 87.2% on SWE-bench Verified and 91.5% on GPQA Diamond with scalable test-time verification.
GPT-5
OpenAI's August 2025 generational leap, featuring native test-time reasoning integration, 500k context window, and state-of-the-art SWE-bench and mathematical scores.
GPT-5.2 Pro
Peak 2025 reasoning flagship from OpenAI, achieving 84.5% on SWE-bench Verified and 89.2% on GPQA Diamond with dynamic test-time compute search.
GPT-5 Pro
OpenAI's late-2025 flagship professional reasoning model, scaling test-time compute search over 500k context to achieve 81.2% on SWE-bench Verified and 86.8% on GPQA Diamond.
GPT-5.5
April 2026 breakthrough expanding context to 1-million tokens natively while achieving 86.5% on SWE-bench Verified at affordable $3/$12 economics.
GPT-5.4
March 2026 foundation model standardizing 83.8% SWE-bench Verified coding precision, 500k context, and $3/$12 economics for enterprise agent automation.
GPT-6 Luna
Ultra-fast low-latency frontier model in the GPT-6 generation, streaming at 130+ tps across a 1-million-token context window at $0.20/$0.80 economics.
GPT-5.3 Chat
Specialized early-2026 conversational flagship tuned for human-like emotional intelligence, conversational fluidity, nuanced debate, and real-time voice warmth.
GPT-5.6 Terra
Balanced enterprise workhorse tier of the 5.6 family, combining 1M context with competitive $2/$8 token rates and 84% SWE-bench resolution.
GPT-5.2
December 2025 evolution of GPT-5 establishing 81% SWE-bench Verified resolution, 500k context, and enhanced multimodal audio/vision integration.
GPT-5.6 Luna
Ultra-fast low-latency lunar tier of the 5.6 family, achieving 73% on SWE-bench Verified at sub-120ms latency and $0.25/$1.00 economics across 500k context.
GPT-4o
OpenAI's flagship omni model natively processing text, audio, and vision with low-latency multimodal reasoning and a 128,000 token context window.
GPT-5.4 mini
March 2026 compact model delivering 400k context, 69.5% SWE-bench resolution, and fractional $0.20/$0.80 pricing.
GPT-5.1
November 2025 update to GPT-5 delivering lower pricing ($4/$16), improved steerability, and 78% on SWE-bench Verified.
GPT-5 mini
Lightweight version of GPT-5 delivering high-speed reasoning, 300k context, and budget pricing ($0.30/$1.20) for automated agent pipelines.
GPT-4o mini
OpenAI's most cost-efficient compact multimodal model, replacing GPT-3.5 Turbo with superior intelligence, 128k context, and fractional pricing ($0.15/$0.60).
GPT-4.5
OpenAI's massive knowledge-dense frontier model (codenamed Orion), trained with unprecedented pre-training compute to eliminate hallucination in human knowledge and creative writing.
GPT-4.1
OpenAI's April 2025 mid-generation efficiency workhorse, bringing improved agentic tool execution, lower pricing ($2/$8), and 256k context.
GPT-4.1 mini
Compact April 2025 model offering 200k context, near-instant inference, and sub-dollar token economics for high-scale agent fleets.
GPT-4 Turbo
OpenAI's November 2023 DevDay milestone, expanding context to 128,000 tokens with vision capabilities, JSON mode, reproducible outputs, and lower pricing.
GPT-4
OpenAI's foundational March 2023 frontier release, establishing breakthrough human-level performance on academic examinations, professional certifications, and complex logic.