Gemini 4 Argon vs Claude Opus 5.5
Gemini 4 Argon costs $2.00 / $10.00 and Claude Opus 5.5 costs $4.00 / $20.00 per million input / output tokens. At a typical 3:1 mix, Gemini 4 Argon is 2.0× cheaper than Claude Opus 5.5. 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
$4.00
per 1M
Output
$20.00
per 1M
Cached
$0.20
1M context
Side by side
✓ marks the cheaper price, larger context window, bigger discount or higher score.
| Detail | Gemini 4 Argon | Claude Opus 5.5 |
|---|---|---|
| Price per 1M tokens | ||
| Input | $2.00Lowest | $4.00 |
| Output | $10.00Lowest | $20.00 |
| Blended (3 in : 1 out) | $4.00Lowest | $8.00 |
| Cached input | $0.10Lowest | $0.20 |
| 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 | 168 |
| Arena text score 25 Sep 2026 | — | 1509 |
| Released | 13 Oct 2026 | 22 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 Opus 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 | $305Lower | $610 | $305 |
| 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 | $463Lower | $926 | $463 |
| Coding agent400 tasks a month, 40 steps each with a growing context; 85% cachedPrice this workload in the calculator | $369Lower | $738 | $369 |
How they differ
- Gemini 4 Argon is cheaper on input ($2 vs $4).
- Gemini 4 Argon is cheaper on output ($10 vs $20), which matters most for long answers and reasoning models.
- Gemini 4 Argon accepts longer prompts (1M vs 1M tokens).
- Cached input is cheaper on Gemini 4 Argon ($0.10 vs $0.20), which favours agents and chat apps that resend the same context.
- On Epoch AI’s Capabilities Index, Claude Opus 5.5 scores 168 and Gemini 4 Argon 166, within each other’s margin of error, so treat them as level on general benchmarks. Gemini 4 Argon is 2.0× cheaper for a similar score.
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.
- ▼ 20%Claude Opus 5.5 launched at $4 / $20 per 1M tokens, 20% below Opus 5.
$5 / $25→ $4 / $20 - Anthropic retired Claude Opus 4.1.
- Anthropic launched Claude Opus 5 at $5 / $25.
- Anthropic retired Claude Opus 4 and Claude Sonnet 4.
Related comparisons
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