Gemini 3.1 Ultra API Developer Guide: 2M Context Window

Gemini 3.1 Ultra API Developer Guide: 2M Context Window

Gemini 3.1 Ultra is Google’s flagship large language model, released in 2026 with a 2-million-token context window — the largest available from any commercial LLM provider as of this writing. It achieves 92% accuracy on MMLU-Pro and 89% pass@1 on HumanEval+, making it the highest-scoring model on both benchmarks. Access comes through two paths: Google AI Studio for experimentation and Vertex AI for production deployments. Pricing starts at $25 per million input tokens and $100 per million output tokens, with a batch API available at roughly 50% discount. This guide covers everything a developer needs to integrate, optimize, and deploy Gemini 3.1 Ultra at scale. ...

May 7, 2026 · 16 min · baeseokjae
Gemini 2.5 Pro Coding Review 2026: 2M Context Window vs Claude and GPT-5

Gemini 2.5 Pro Coding Review 2026: 2M Context Window vs Claude and GPT-5

Gemini 2.5 Pro is Google’s most capable coding model as of 2026, offering a 1 million token context window, native thinking mode, and API pricing starting at $1.25 per million input tokens — roughly 12x cheaper than Claude Opus. For developers choosing between frontier AI coding tools, those numbers demand a close look. What Is Gemini 2.5 Pro and Why Developers Care About It Gemini 2.5 Pro is Google DeepMind’s flagship language model, designed for complex coding, reasoning, and long-context tasks. Launched with a 1 million token context window and native “thinking mode” baked into every prompt, it represents a different architectural philosophy from OpenAI’s separate o-series reasoning models and Anthropic’s extended thinking toggle. In real terms, 1 million tokens means you can load an entire mid-sized codebase — 50,000+ lines — into a single prompt, ask for a refactor, and get a coherent response that accounts for every file at once. By April 2026, Gemini 2.5 Pro has earned the Chatbot Arena #1 ranking across all categories, scored 86.7% on AIME 2025 math benchmarks with thinking mode enabled, and achieved 62.4% on SimpleBench. For developers who’ve been stuck chunking large codebases across multiple requests, the context window alone changes what’s possible. The pricing advantage — $1.25 per million input tokens versus $15 for Claude Opus — makes it a serious contender for cost-conscious teams building at scale. ...

April 27, 2026 · 14 min · baeseokjae
Gemini Flash-Lite Batch API: 50% Cost Savings for High-Volume Tasks

Gemini Flash-Lite Batch API: 50% Cost Savings for High-Volume Tasks (2026 Guide)

Gemini Flash-Lite Batch API cuts your LLM costs in half by processing requests asynchronously — submit a JSONL file, get results back within 24 hours, and pay $0.125/1M input tokens instead of $0.25. For teams running thousands of daily classification, translation, or summarization jobs, this single change can reduce monthly AI spend from hundreds of dollars to tens. What Is the Gemini Batch API and Why Does It Matter The Gemini Batch API is Google’s asynchronous processing mode that applies a 50% discount on all paid Gemini models for non-real-time workloads. Instead of sending individual HTTP requests and waiting for each response, you package hundreds or thousands of requests into a JSONL file, submit it as a batch job, and retrieve results once the job completes — typically well under 24 hours. Launched alongside the Gemini 3 family in early 2026, the Batch API targets the large class of AI tasks where latency is irrelevant: overnight content moderation queues, bulk data extraction pipelines, weekly report generation, and offline document analysis. The mechanism is simple: Google processes your batch during off-peak capacity windows, passes the savings directly to you, and guarantees completion within one day. For startups and enterprises alike, this transforms formerly expensive batch pipelines into genuinely affordable infrastructure. At $0.125/1M input tokens with Flash-Lite, you can process an entire Wikipedia-scale corpus for under $10 — a threshold that makes previously cost-prohibitive use cases like fine-tuning dataset generation or full-catalog product description rewrites financially viable. ...

April 26, 2026 · 12 min · baeseokjae
Gemini 3.1 Pro Review 2026: Developer Benchmark and Coding Performance

Gemini 3.1 Pro Review 2026: Developer Benchmark and Coding Performance

Gemini 3.1 Pro is Google’s most capable reasoning model as of early 2026, launching February 19 to immediately claim the #1 spot on Artificial Analysis’ Intelligence Index across 115 models — with an overall score of 57 against a peer median of 26. For developers evaluating coding assistants and agentic workflows, the core question isn’t whether it benchmarks well. It’s whether those benchmarks translate to tasks you actually run in production, and whether the 29-second time-to-first-token penalty is a dealbreaker for your architecture. ...

April 19, 2026 · 13 min · baeseokjae