grok-4 vs claude-opus-4-6
Side-by-side comparison of grok-4 and claude-opus-4-6 — benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. grok-4 and claude-opus-4-6 trade wins evenly across shared benchmarks.
xAI Corp.
grok-4
Input / 1M
$3.00
Output / 1M
$15.00
Context
256K
Model ID
xai/grok-4
claude-opus-4-6
Input / 1M
$5.00
Output / 1M
$25.00
Context
1M
Model ID
anthropic/claude-opus-4-6
Benchmark comparison
MMLU Proknowledge
grok-487.5%
claude-opus-4-687.8%
GPQA Diamondreasoning
grok-487.5%
claude-opus-4-681.2%
HumanEvalcoding
grok-493.8%
claude-opus-4-694.1%
SWE-Bench Verifiedcoding
grok-472.5%
claude-opus-4-674.5%
MATHmath
grok-494.1%
claude-opus-4-693.2%
AIME 2024math
grok-490.1%
claude-opus-4-687.3%
MMMUmultimodal
grok-477.9%
claude-opus-4-678.2%
LiveBenchreasoning
grok-475.4%
claude-opus-4-673.4%
τ-bench Retailagentic
grok-4—
claude-opus-4-671.2%
Scores sourced from official model cards, Artificial Analysis, and public leaderboards. Benchmarks measure specific skills and don't capture every aspect of model quality.
Pricing & specifications
| grok-4 | claude-opus-4-6 | |
|---|---|---|
| Input price / 1M | $3.00 | $5.00 |
| Output price / 1M | $15.00 | $25.00 |
| Context window | 256K tokens | 1M tokens |
| Max output | — | 128K tokens |
| Vision input | Yes | Yes |
| Tool calling | Yes | Yes |
| Reasoning | — | Yes |
| Prompt caching | Yes | Yes |
| Computer use | Yes | Yes |
| Provider | xAI Corp. | Anthropic PBC |
Questions people ask
Is grok-4 better than claude-opus-4-6?
grok-4 and claude-opus-4-6 trade wins evenly across shared benchmarks. See the benchmark comparison above for specifics — grok-4 and claude-opus-4-6 have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper — grok-4 or claude-opus-4-6?
grok-4 is cheaper. grok-4 costs $3.00/$15.00 per 1M input/output tokens, while claude-opus-4-6 costs $5.00/$25.00.
Can I use grok-4 and claude-opus-4-6 through the same API?
Yes. Requesty provides a single OpenAI-compatible API that routes to both. Change just the "model" parameter to switch — "xai/grok-4" or "anthropic/claude-opus-4-6" — no other code changes needed.
What are the context windows?
grok-4 supports up to 256K tokens of context. claude-opus-4-6 supports up to 1M tokens. Longer context means you can feed larger documents or codebases in a single prompt, though quality often degrades past 128K for most models.
Switch between grok-4 and claude-opus-4-6 with one line of code
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