Two terminal coding agents, two very different bets. Claude Code, running on Anthropic's Opus 4.8, is the capability leader. Grok Build 0.1, xAI's fast new agent, undercuts it dramatically on token price and was deliberately built to feel familiar to Claude users. So which should you actually run? The honest one-line answer: Claude Code for maximum capability on hard work; Grok Build 0.1 if price-per-token or the X/Grok subscription is what drives your decision.
TL;DR — Key Takeaways
- Capability: Claude Code wins. Opus 4.8 posts ~88.6% SWE-bench Verified vs Grok Build's vendor-reported ~70.8%.
- Token price: Grok Build wins, and not by a little — $1/$2 per million vs Opus 4.8's $5/$25, plus $0.20 cached input.
- Context: Claude Code's 1M-token window dwarfs Grok Build's 256K.
- Ecosystem: near-parity — Grok Build is intentionally compatible with Claude skills,
CLAUDE.md, MCP, plugins and hooks. - Pick by: hardest tasks and biggest codebases → Claude Code; high-volume, cost-sensitive, or already-paying-for-X → Grok Build.
The head-to-head table
| Grok Build 0.1 | Claude Code (Opus 4.8) | |
|---|---|---|
| SWE-bench Verified | ~70.8% (vendor) | 88.6% |
| API price (in / out) | $1 / $2 | $5 / $25 |
| Cached input | $0.20 / 1M | Discounted |
| Context window | 256K tokens | 1M tokens |
| Speed | Built for speed | Fast mode (≈2.5×) |
| Ecosystem | Skills, MCP, plugins (Claude-compatible) | Skills, MCP, plugins, subagents |
| Bundled with | SuperGrok / X Premium Plus | Claude Pro / Max / Team |
Grok Build's SWE-bench figure is xAI's own internal harness; treat it as a vendor number until independent results land. For exact, current token pricing on either, use the Token Cost Calculator.
Capability: Claude Code is ahead
On raw, hard-task capability there isn't really a contest yet. Opus 4.8's ~88.6% on SWE-bench Verified sits roughly 15–18 points above Grok Build's vendor-reported ~70.8%, and the larger 1M-token context lets Claude Code hold far more of a big codebase in working memory at once. If your work is genuinely complex — multi-file refactors, gnarly debugging, large migrations — Claude Code is the safer tool. That's also why we rate it highly in our complete Claude Code guide.
Price: Grok Build is the value play
This is where Grok Build earns its place. At $1/$2 per million tokens — a fifth to a tenth of Opus 4.8's $5/$25 — plus a striking $0.20 per million cached input, the economics of high-volume agent work tilt hard in its favour. For automated pipelines, code-review bots, or anyone running thousands of agent turns a day where "good enough" intelligence is fine, that price gap compounds fast. Just remember the all-in cost depends on your usage pattern, not the sticker price — model it with the Token Cost Calculator before you switch.
Claude Code is the better engineer. Grok Build 0.1 is the better deal. Which matters more depends entirely on the job — and the budget.
Ecosystem: closer than you'd expect
xAI made a shrewd move: Grok Build is deliberately compatible with the Claude Code ecosystem — your CLAUDE.md files, skills, MCP servers, plugins and hooks largely work out of the box. That lowers the switching cost enormously and means trying Grok Build doesn't mean abandoning the setup you've built. Both support plan-before-execute workflows with reviewable diffs; Claude Code adds parallel subagents for large tasks via its Dynamic Workflows preview.
Which should you pick?
Choose Claude Code if you:
- Work on hard, multi-file engineering where capability beats price.
- Need the 1M-token context for large codebases.
- Already pay for a Claude plan — Opus 4.8 is included.
- Want the most reliable, careful agent for production repos.
Choose Grok Build 0.1 if you:
- Run high-volume, cost-sensitive agent workloads where the $1/$2 (and $0.20 cached) pricing compounds.
- Already pay for SuperGrok or X Premium Plus — the agent is bundled in.
- Want speed and "good-enough" intelligence over leaderboard-topping capability.
- Like that it's Claude-compatible, so trying it costs you almost nothing.
For the deeper dive on each, see our full Grok Build 0.1 review and what Opus 4.8 actually costs.
What about Codex CLI and GPT-5.5?
Both OpenAI's Codex CLI and GPT-5.5 sit in the same frontier tier as Claude Code on capability, well above Grok Build's current benchmark. If your only criterion is topping SWE-bench, the frontier agents (Claude Code, Codex CLI) lead. Grok Build's argument isn't "I'm the smartest" — it's "I'm fast, cheap, and I fit your existing setup." Keep that framing and the choice gets simple.
The bottom line
Grok Build 0.1 vs Claude Code isn't really a fight over the same crown — they're optimised for different things. Claude Code is the capability leader and the right default for hard work and big codebases. Grok Build 0.1 is the value and speed play, especially if you're already in the X/Grok ecosystem or running agents at volume. The good news: because Grok Build speaks Claude's ecosystem, you can keep Claude Code as your daily driver and reach for Grok Build on the cost-sensitive jobs — no lock-in either way.
Related: the full Grok Build 0.1 review, Cursor vs GitHub Copilot, and the Opus 4.8 vs 4.7 comparison. Still deciding? Run Pickurai's free finder.
FAQ
Is Grok Build 0.1 better than Claude Code?
Not on raw capability — Claude Code on Opus 4.8 posts ~88.6% SWE-bench Verified versus Grok Build's vendor-reported ~70.8%, and has a larger 1M-token context. Grok Build's advantages are token price ($1/$2 vs $5/$25), speed, and Claude-compatible tooling. Better depends on whether you're optimising for capability or cost.
Is Grok Build cheaper than Claude Code?
Per token, yes — substantially. Grok Build is $1 input / $2 output per million with $0.20 cached, versus Opus 4.8's $5 / $25. But all-in cost depends on your usage and caching, so model your own numbers before assuming the bill is lower.
Can I use my CLAUDE.md and MCP setup with Grok Build?
Largely yes. xAI built Grok Build to be compatible with Claude Code skills, CLAUDE.md files, MCP servers, plugins and hooks, so switching or testing it costs very little setup time.
Grok Build vs Codex CLI — which is better?
On benchmark capability, Codex CLI (and GPT-5.5) sit in the frontier tier alongside Claude Code, above Grok Build's current numbers. Grok Build competes on price and speed rather than topping the leaderboard.
Should I switch from Claude Code to Grok Build?
For most hard engineering work, no — keep Claude Code. Consider Grok Build for high-volume, cost-sensitive tasks, or if you already pay for SuperGrok or X Premium Plus. Because it's Claude-compatible, you can run both and route work to whichever fits the job.