claude-sonnet-5 vs grok-4
Side-by-side comparison of claude-sonnet-5 and grok-4: benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. claude-sonnet-5 outperforms grok-4 on 4 of 4 shared benchmarks.
claude-sonnet-5
Input / 1M
$2.00
Output / 1M
$10.00
Context
1M
Model ID
anthropic/claude-sonnet-5
xAI Corp.
grok-4
Input / 1M
$3.00
Output / 1M
$15.00
Context
256K
Model ID
xai/grok-4
Benchmark comparison
Intelligence Indexreasoning
claude-sonnet-553.4%
grok-433.3%
Coding Indexcoding
claude-sonnet-571.5%
grok-4N/A
Math Indexmath
claude-sonnet-5N/A
grok-492.7%
GPQA Diamondreasoning
claude-sonnet-591.1%
grok-487.7%
AIME 2025math
claude-sonnet-5N/A
grok-492.7%
LiveCodeBenchcoding
claude-sonnet-5N/A
grok-481.9%
Terminal-Bench Hardagentic
claude-sonnet-5N/A
grok-437.9%
τ²-Benchagentic
claude-sonnet-5N/A
grok-474.9%
SciCodecoding
claude-sonnet-553.6%
grok-445.7%
MMLU Proknowledge
claude-sonnet-5N/A
grok-486.6%
Humanity's Last Examreasoning
claude-sonnet-539.6%
grok-423.9%
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
| claude-sonnet-5 | grok-4 | |
|---|---|---|
| Input price / 1M | $2.00 | $3.00 |
| Output price / 1M | $10.00 | $15.00 |
| Context window | 1M tokens | 256K tokens |
| Max output | 128K tokens | N/A |
| Vision input | Yes | Yes |
| Tool calling | Yes | Yes |
| Reasoning | Yes | N/A |
| Prompt caching | Yes | Yes |
| Computer use | Yes | Yes |
| Provider | Anthropic PBC | xAI Corp. |
Questions people ask
Is claude-sonnet-5 better than grok-4?
claude-sonnet-5 outperforms grok-4 on 4 of 4 shared benchmarks. See the benchmark comparison above for specifics: claude-sonnet-5 and grok-4 have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper, claude-sonnet-5 or grok-4?
claude-sonnet-5 is cheaper. claude-sonnet-5 costs $2.00/$10.00 per 1M input/output tokens, while grok-4 costs $3.00/$15.00.
Can I use claude-sonnet-5 and grok-4 through the same API?
Yes. Requesty provides a single OpenAI-compatible API that routes to both. Change just the "model" parameter to switch between "anthropic/claude-sonnet-5" and "xai/grok-4", no other code changes needed.
What are the context windows?
claude-sonnet-5 supports up to 1M tokens of context. grok-4 supports up to 256K 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 claude-sonnet-5 and grok-4 with one line of code
Requesty provides a single OpenAI-compatible API for 400+ models. Change the model parameter, not your code.