Gemini 4 Argon vs Claude Sonnet 5.5
Gemini 4 Argon costs $2.00 / $10.00 and Claude Sonnet 5.5 costs $2.00 / $10.00 per million input / output tokens. At a typical 3:1 mix, Gemini 4 Argon is about the same price. Gemini 4 Argon's price is promotional: $2 / $10 until 30 Nov 2026, then $4 / $20.
Input
$2.00
per 1M
Output
$10.00
per 1M
Cached
$0.10
1M context
Input
$2.00
per 1M
Output
$10.00
per 1M
Cached
$0.10
1M context
Side by side
✓ marks the cheaper price, larger context window, bigger discount or higher score.
| Detail | Gemini 4 Argon | Claude Sonnet 5.5 |
|---|---|---|
| Price per 1M tokens | ||
| Input | $2.00 | $2.00 |
| Output | $10.00 | $10.00 |
| Blended (3 in : 1 out) | $4.00 | $4.00 |
| Cached input | $0.10 | $0.10 |
| Batch or off-peak discount | 50% (batch) | 50% (batch) |
| Long prompts | Same rate at any length | Same rate at any length |
| Limits and model | ||
| Context window | 1M | 1M |
| Capability score Epoch AI index | 166 | 167 |
| Released | 13 Oct 2026 | 28 Sep 2026 |
| Open weights | No | No |
| Status | Current | Current |
| Checked | ||
| Price checked | 6 Nov 2026 Gemini API pricing | 22 Oct 2026 Anthropic pricing |
Monthly cost on three workloads
List prices, no batch discount. The cached share applies where a model has a cache rate.
| Workload | Gemini 4 Argon | Claude Sonnet 5.5 | Difference |
|---|---|---|---|
| Customer chat assistant50,000 conversations a month, about 2,000 tokens in and 400 out each; 50% cachedPrice this workload in the calculator | $305 | $305 | $0.00 |
| Document Q&A (RAG)20,000 questions a month over retrieved documents, 12,000 in and 600 out; 30% cachedPrice this workload in the calculator | $463 | $463 | $0.00 |
| Coding agent400 tasks a month, 40 steps each with a growing context; 85% cachedPrice this workload in the calculator | $369 | $369 | $0.00 |
How they differ
- Gemini 4 Argon accepts longer prompts (1M vs 1M tokens).
- On Epoch AI’s Capabilities Index, Claude Sonnet 5.5 scores 167 and Gemini 4 Argon 166, within each other’s margin of error, so treat them as level on general benchmarks.
Recent changes
All changes- Gemini 4 Argon reached the paid Gemini API at an introductory $2 / $10 per 1M tokens, with cache reads at $0.10, until 30 November 2026; from 1 December it costs $4 / $20.
- Anthropic halved Claude Sonnet 5.5's cache-read price from $0.20 to $0.10 per 1M tokens; Anthropic says this cuts most agent workloads by about 20%.
- Claude Sonnet 5.5 replaced Sonnet 5 at the same $2 / $10 per 1M tokens, with cache reads at $0.20.
- ▼ 33%Anthropic launched Claude Sonnet 5 at $2 / $10, cheaper than Sonnet 4.6's $3 / $15.
$3 / $15→ $2 / $10 - Anthropic retired Claude Opus 4 and Claude Sonnet 4.
Related comparisons
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