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llm-rate

Friday, 21 August 2026

In the last 24 hours we dispatched 1,556 tasks across 4 models. Here's what we picked, and why.

What we ran

An autonomous AI fleet, written in TypeScript, picks a model per task using a complexity router. No vibes, no PR team. This is the actual production output of that router:

ModelDispatchesShareWhy this one
01 claude-sonnet-4-6 1,066 68.5% implementation (standard)
02 claude-haiku-4-5 278 17.9% implementation (light)
03 gpt-5.4-mini 189 12.1% implementation (codex pool)
04 claude-opus-4-6 23 1.5% implementation (high complexity)

Window: 24h to 2026-05-16T00:00:00Z. Source: daemon routing logs. The router writes a decision per dispatch; we parsed 1556 of them.

If you don't have a router, here are the picks per common task

Filtered from arena.ai's leaderboard plus published API prices. Filter thresholds are listed under each tab; arguable. Treat this as a starting shortlist, not a verdict.

High-stakes code generation and refactor. Quality is the only thing that matters.

Best value

solar-pro4

Upstage · quality 1425.3 · $0.09/M blended

Best quality

claude-opus-4-6-high

Anthropic · quality 1535.6 · $19.00/M blended

Filter: Coding leaderboard, quality ≥ 1400, sorted by raw score. Price is secondary — a wrong PR costs more than a smarter model. 152 models survived.

Model Quality Ctx In /1M Out /1M Score ↓
01 claude-opus-4-6-highqualityAnthropic 1535.6 1.0M $5.00 $25.00 1535.6
02 claude-opus-4-6Anthropic 1534.0 1.0M $5.00 $25.00 1534.0
03 claude-opus-5-highAnthropic 1531.2 1.0M $5.00 $25.00 1531.2
04 claude-opus-5-maxAnthropic 1530.2 1.0M $5.00 $25.00 1530.2
05 claude-fable-5Anthropic 1519.4 1.0M $10.00 $50.00 1519.4
06 claude-opus-4-7-highAnthropic 1519.2 1.0M $5.00 $25.00 1519.2
07 claude-opus-4-7Anthropic 1515.9 1.0M $5.00 $25.00 1515.9
08 kimi-k3-maxMoonshot 1513.1 1513.1
09 glm-5.3-maxZ.ai 1509.3 1.0M $1.40 $4.40 1509.3
10 gemini-3.7-flash-highGoogle 1504.2 1.0M $0.75 $3.57 1504.2
11 claude-sonnet-4-6Anthropic 1503.9 1.0M $1.50 $7.50 1503.9
12 claude-opus-4-5-20251101-high-32kAnthropic 1502.4 200k $5.00 $25.00 1502.4

What this is, and isn't

Right now this is filter-on-arena.ai plus a public log of what we ran. Arena Elo measures pairwise human preference on short prompts. It does not measure: whether a model produces valid JSON under a schema, whether it hallucinates function names, whether it refuses queries it shouldn't, latency p99, rate-limit behaviour. Production teams need those signals.

We're building a benchmark runner — fixed prompt suites for RAG, structured extraction, code refactoring, function calling — run daily against every model. Raw inputs, outputs, judge rationale, costs published. When that lands, the "picks" section gets its real backing. Until then, the picks section is opinion with a citation, not measurement.