GLM 5.3: Benchmarks, API Access, and Public Weights (2026)

The GLM 5.3 API is open at $1.4 in / $4.4 out, same price as 5.2. 1M context, 128K output, Terminal Bench 3.0 4.6 to 28.3, public weights checked September 9.

How to Use Seedance 2.5 (2026): Prompts, Timestamps, Cost

Seedance 2.5 takes 30-second clips, 50 reference assets, and integer-second timestamps. The official spec, three real API runs, and what each clip billed.

Seedance 2.5 vs 2.0: What Changed, and When 2.0 Still Wins

Seedance 2.5 doubles clips to 30s and takes 50 references, but caps at 720p until 2026-08-17 and costs 60% more per second.

Claude Opus 5 Alternatives: Pin 4.6 or Fix Your Prompt

Opus 5 says it's done when it isn't? Opus 4.5-4.8 are still live at the same $5/$25. Symptom-to-fix table, retirement dates, a measured 1.30x token gap.

What Is a Context Window? Token Limits by Model (2026)

A context window is the token budget for one request, input plus output. One identical document measured across nine models: 614 to 957 tokens.

Best AI Coding Agent Harness (2026): 9 Tools + Model Pairing

Compare nine coding agent harnesses, their model and protocol choices, and a dated hands-on test. Includes October updates to usage data, Copilot BYOK and Pi MCP.

429 Too Many Requests: What It Means, When to Retry (2026)

A 429 is one status code for 5 different problems. Read retry-after first, back off 1s/2s/4s with jitter, and skip the retry entirely on billing 429s.

Is Seedance 2.0 Free? 6 Access Routes and Costs (2026)

No free Seedance 2.0 API tier exists. BytePlus wants $29.70 prepaid before your first call, a 4s test clip is $0.16, and 1 of 6 routes is genuinely free.

DeepSeek V4 Flash: 6 Ways to Pay Less as Prices Rise (2026)

DeepSeek API prices rise soon. Cache hits cost 50x less, host cache rates vary 28x, the obvious slug buys the old 0423 build. 6 fixes + break-even math.

How to Use Seedance 2.0 (2026): Prompts, 6 Fixes, and Cost

Seedance 2.0 clips drifting or sprouting subtitles? ByteDance's own prompt spec, 6 documented fixes, and 720p at $0.16/s through one ofox key.